MT6628T

 

3-in-1 wireless communication device

 

 

 

MEDIATEK

MEDIATEK



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MT6628T Data Sheet
Version:
Release date:
1.2
2012-08-13
© 2012 MediaTek Inc.
This document contains information that is proprietary to MediaTek Inc.
Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.
Specifications are subject to change without notice.
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MT6628T
Data Sheet
Confidential A
Document Revision History
Revision
1.0
1.1
1.2
Date
2012/05/10
2012/06/05
2012/08/13
Author
Lingbin Guo
Lingbin Guo
Lingbin Guo
Description
First release
Update WiFi standard name
1. add power-domain
2. update PMU information
3. update RF measurement
4. add ordering guide
5. fix Figure 12 (SPDT -> Balun + BPF)
MediaTek Confidential
© 2012 MediaTek Inc.
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Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.
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MT6628T
Data Sheet
Confidential A
Table of Contents
Document Revision History .................................................................................................................. 2
Table of Contents................................................................................................................................... 3
1 System Overview.......................................................................................................................... 5
1.1 General Description.............................................................................................................. 5
1.2 Features................................................................................................................................ 5
1.3 Applications .......................................................................................................................... 6
1.4 Block Diagram ...................................................................................................................... 7
2 Product Description ..................................................................................................................... 8
2.1 Pin Description...................................................................................................................... 8
2.1.1 Strapping Table .................................................................................................. 14
2.2 Package Information........................................................................................................... 14
2.2.1 WLCSP Packaging............................................................................................. 14
2.3 Ordering guide .................................................................................................................... 17
3 Electrical Characteristics .......................................................................................................... 18
3.1 PMU Description................................................................................................................. 18
3.1.1 Under-Voltage Lockout (UVLO) ......................................................................... 18
3.1.2 WF_PA_LDO...................................................................................................... 18
3.1.3 CLDO ................................................................................................................. 18
3.1.4 Buck Converter................................................................................................... 18
3.1.5 PMU Power Connection ..................................................................................... 19
3.2 Absolute Maximum Ratings................................................................................................ 20
3.3 Recommended Operating Range....................................................................................... 20
3.4 PMU Electrical Characteristics ........................................................................................... 21
3.4.1 PMU Characteristics........................................................................................... 21
3.4.2 PMU Summary List ............................................................................................ 23
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MT6628T
Data Sheet
Confidential A
3.5 XOSC32.............................................................................................................................. 23
3.5.1 Block Description................................................................................................ 23
3.5.2 Functional Specifications of XOSC32 ................................................................ 24
3.5.3 Recommendations for Crystal Parameters for XOSC32.................................... 24
3.6 DC Electrical Characteristics for 2.8 Volts Operation......................................................... 25
3.7 DC Electrical Characteristics for 1.8 Volts Operation......................................................... 25
MediaTek Confidential
© 2012 MediaTek Inc.
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Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.
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MT6628T
Data Sheet
Confidential A
1 System Overview
1.1 General Description
MT6628T is a 3-in-1 wireless communication device which includes
WLAN
Bluetooth
FM Receiver
With four advanced radio technologies integrated into one single chip, MT6628T provides the best
and most convenient connectivity solution among the industry. MT6628T implements advanced and
sophisticated Radio Coexistence algorithms and hardware mechanisms. It also supports single 2.4
GHz antenna sharing between Bluetooth and WLAN. The enhanced overall quality is achieved for
simultaneous voice, data, and audio/video transmission on mobile phones and Media Tablets. The
small footprint of WLCSP package with low-power consumption greatly reduces PCB layout resource.
The software package Symphonyenables all advanced wireless features on Android OS.
1.2 Features
Embedded single core 32-bit RISC CPU for better system level management between sub-
systems
Supports single antenna for Bluetooth and WLAN
Self calibration
Single crystal for BT and WLAN
Integrated switching regulator enables direct connection to battery
Best-in-class current consumption performance
OS support: Android and Windows Mobile
Intelligent BT/WLAN coexistence scheme that goes beyond PTA signaling (for example, transmit
window and duration that take into account of protocol exchange sequence, frequency, etc.)
Single antenna support for WLAN/Bluetooth
WLCSP (3.99x4.45mm2) package
WLAN
Single-band (2.4GHz) single stream 802.11 b/g/n MAC/BB/RF
802.11 d/h/k compliant
Security: WFA WPA/WPA2 personal, WPS2.0, WAPI (Hardware)
QoS: WFA WMM, WMM PS
Supports 802.11n optional features: STBC, A-MPDU, Blk-Ack, RIFS, MCS Feedback, 20/40MHz
coexistence (PCO), unscheduled PSMP
Supports 802.11w Protected Managed Frames
Supports WiFi Direct (WFA P-2-P standard) and Wi-Fi Miracast (Wi-Fi Display)
Supports HotSpot 2.0 Passpoint
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© 2012 MediaTek Inc.
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Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.
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Interface: SDIO 2.0 (4-bit & 1-bit, up to 50MHz), SPI (48Mbps)
Integrated PA with max 21dBm output power
Typical -77.5 dBm 2.4GHz receiver sensitivity at 11g 54Mbps mode
Per packet TX power control
Bluetooth
Bluetooth specification v2.1+EDR
Bluetooth specification 3.0+HS compliance
Bluetooth v4.0 Low Energy (LE)
Integrated PA with 10dBm (class 1) transmit power and Balun
Rx sensitivity: GFSK -95dBm, DQPSK -94dBm, 8-DPSK -88dBm
HCI over high speed (4Mbps) UART(H4), and SDIO 2.0
Best-in-class BT/Wi-Fi coexistence performance
Up to 4 piconets simultaneously with background inquiry/page scan
Supports Scatternet
Packet loss concealment (PLC) function for better voice quality
Low-power scan function to reduce the power consumption in scan modes
FM
76-108MHz with 50kHz step
Supports RDS/RBDS
Digital stereo modulator/demodulator
Digital audio interface (I2S)
Fast seek time 30ms/channel
Stereo noise reduction
Audio sensitivity 2dBµVemf ((S+N)/N=26dB)
Audio S/N 60dB
Anti-jamming
Integrated short antenna
MT6628T
Data Sheet
Confidential A
1.3 Applications
Smart phone applications
Media Tablet applications
Mobile Internet Device (MID) applications
Portable Navigation Device (PND) applications
Portable Media Player (PMP) applications
Portable gaming devices
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© 2012 MediaTek Inc.
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Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.
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MT6628T
Data Sheet
Confidential A
1.4 Block Diagram
SDIO/SPI
HIFSYS
CPU
FM
long- antenna
RX
FM
short-antenna
RX
FM
stereo out
I2S
System
Memory
General
DMA
FM RX
RF + AFE
FM RX
Modem
Audio
DAC
FM
SRC
FM RX
FM
DSP
MCUSYS
OTP
CONFG
GPIO
UART
GPIO
Common UART
MAC
BB
TX RX
WIFI
RF
PTA
WiFiSYS
PA
2.4G WiFi TX
2.4G WiFi RX (w/o external LNA)
2.4G BT T/RX
PA
2.4G WiFi RX
(w/ external LNA)
RTC XTAL
32.768KHz
(optional)
PMU
RF_CTL
BT RF
MODEM
RTC PKV PCM
BTSYS
Figure 1. MT6628T block diagram
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MT6628T
Data Sheet
Confidential A
2 Product Description
2.1 Pin Description
There are total 88 pins in WLCSP package.
Symbol
WLCSP
bump
DVDD
DVDD
DVDD
DVSS
DVSS
DVSS1
DVDDIO
DVDDIO_SDIO
G5
E6
C9
G6
F7
C10
C8
H4
PMU_EN
PMU_DSB
VREF
AVDD55_MISC
AVSS55_MISC
AVDD25_V2P5
AVDD25_V2P5NA
LXBK
AVDD55_SMPS
AVSS55_SMPS
AVDD17_CLDO_IN
AVDD28_TLDO_SW
CLDO
AVDD28_TLDO
WFLDO
G3
H3
L1
L2
K1
G2
J3
L3
K3
J4
J2
H1
K2
J1
L4
Power domain
Description
Power ground pin
1.2V core power
1.2V core power
1.2V core power
Ground
Ground
Ground
I/O power
SDIO I/O power
PMU
PMU enable
Disable PMU deep
sleep mode
Reference bandgap
voltage
VBAT for internal
circuit
MISC ground
Internal 2.5V power
Internal 2.5V power
Switching node of
buck
Battery voltage
Switching regulator
ground
1.7V CLDO input
Power source for
TCXO
1.2V core power LDO
output
2.85V TCXO LDO
output
3.3V WiFi LDO output
PU/PD
I/O
NA VDD
NA VDD
NA VDD
NA VSS
NA VSS
NA VSS
NA VDD
NA VDD
NA I
NA I
NA Analog/O
NA VDD
NA VSS
NA VDD
NA VDD
NA O
NA VDD
NA VSS
NA VDD
NA O
NA O
NA O
NA O
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MT6628T
Data Sheet
Confidential A
Symbol
AUX_REF
AVDD28_PLL
AVSS28_PLL
RTCCLK
RTCCLK_O
VCCRTC
AVSSRTC
NC
NC
NC
NC
NC
SANT_P
SALNA_IN_N_VSS
LNA_IN_N_VSS
LANT_P
AUROUT
AULOUT
AVDD28_FM
AVSS28_FM
AVSS28_FM
RF_IOP_WBT
RF_ION_WBT
LNA_IN_EXT
AVDD33_TX_WBT
AVDD16_TRX_WBT
AVDD16_SX_WBT
AVDD16_LF_WBT
AVSS33_PA
AVSS33_PA
WLCSP
bump
H2
Power domain
L5
K5
F10 VCCRTC
E10 VCCRTC
G9
G7
A6
B6
C6
A7
C7
J10
H10
K10
L10
K8
L8
H9
J8
J9
A1
B1
D1
A3
D2
D4
E1
A2
B2
Description
ADC top reference
voltage input
2.8V PLL power
2.8V PLL ground
RTC
RTC 32kHz clock
input
RTC 32kHz clock
output
RTC power
RTC ground
Analog
Reserved
Reserved
Reserved
Reserved
Reserved
Short antenna FM RF
input
Short antenna FM RF
input
Long antenna FM RF
input
Long antenna FM RF
input
FM audio output
FM audio output
FM power
Ground
Ground
WiFi/BT RF port
WiFi/BT RF port
External LNA input
WiFi/BT power
WiFi/BT power
WiFi/BT power
WiFi/BT power
Ground
Ground
PU/PD
NA
NA
NA
I/O
I
VDD
VSS
NA Analog/I
NA Analog/O
NA VDD
NA VSS
NA NA
NA NA
NA NA
NA NA
NA NA
NA RF/I
NA RF/I
NA RF/I
NA RF/I
NA Analog/O
NA Analog/O
NA VDD
NA VSS
NA VSS
NA RF I/O
NA RF I/O
NA RF/I
NA VDD
NA VDD
NA VDD
NA VDD
NA VSS
NA VSS
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Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.
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MT6628T
Data Sheet
Confidential A
Symbol
AVSS16_WBT
AVSS16_WBT
AVSS16_LF_WBT
VCO_MON_WBT
OSC_IN
AVDD28_OSC
AVSS28_OSC
FSOURCE_WR
XTEST
SYSRST_B
ANTSEL2
ANTSEL1
ANTSEL0
RF_I_CAL
OSC_EN
SDIO_CLK
WLCSP
bump
B3
C2
E2
C3
Power domain
A4
A5
B5
G8
B8 DVDDIO
L7 DVDDIO
Internal LDO
2.8V
F3
Internal LDO
2.8V
F4
Internal LDO
2.8V
F2
DVDDIO
F1
Internal LDO
2.8V
G4
H7 DVDDIO_SDIO
Description
Ground
Ground
Ground
WiFi/BT RF monitor
pin
XTAL input
XTAL power
Ground
eFuse power pin
Digital
Test mode enable
External system reset
active low
ANTSEL_2: Antenna
select no.2
GPIO24: GPIO24
in/out
Strap pin
ANTSEL_1: Antenna
select no.1
GPIO23: GPIO23
in/out
Strap pin
ANTSEL_0: Antenna
select no.0
GPIO22: GPIO22
in/out
EXT_INT_N: External
interrupt input from
Host
AUXADC_IN: Analog
pin
RF_I_CAL: Analog pin
GPIO21: GPIO21
in/out
OSC_EN: OSC
enable in clock daisy
chain
GPIO20: GPIO20
in/out
SDIO_CLK: SDIO
interface
PU/PD
NA
NA
NA
NA
NA
NA
NA
NA
PU
PU
PD/SW
PD/SW
PD/SW
PU/SW
NA/SW
NA/SW
I/O
VSS
VSS
VSS
Analog/O
Analog/I
VDD
VSS
VDD
I
I
O
I/O
I
O
I/O
I
O
I/O
I
I
I
I/O
O
I/O
I
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MT6628T
Data Sheet
Confidential A
Symbol
SDIO_CMD
SDIO_DAT3
SDIO_DAT2
SDIO_DAT1
SDIO_DAT0
UART_RXD
UART_TXD
UART_RTS
WLCSP Power domain
bump
DVDDIO_SDIO
J7
DVDDIO_SDIO
J6
DVDDIO_SDIO
H5
DVDDIO_SDIO
J5
DVDDIO_SDIO
H6
DVDDIO
F9
DVDDIO
E8
D9 DVDDIO
Description
HIF_SPI_CLK: SPI
serial clock
GPIO19: GPIO19
in/out
SD_CMD: SDIO
interface
HIF_SPI_CS: SPI chip
select
GPIO18: GPIO18
in/out
SDIO_DAT3: SDIO
interface
HIF_SPI_DOUT: SPI
data output
GPIO17: GPIO17
in/out
SDIO_DAT2: SDIO
interface
HIF_SPI_DIN: SPI
data input
GPIO16: GPIO16
in/out
SDIO_DAT1: SDIO
interface
HIF_SPI_MODE_SEL:
SPI mode select
GPIO15: GPIO15
in/out
SDIO_DAT0: SDIO
interface
HIF_SPI_INT_B: SPI
interrupt
GPIO14: GPIO14
in/out
UART_RXD: UART
RX data
GPIO13: GPIO13
in/out
UART_TXD: UART TX
data
GPIO12: GPIO12
in/out
UART_RTS: UART
flow control
PU/PD
NA/SW
NA/SW
NA/SW
NA/SW
NA/SW
PU/SW
PU/SW
PU/SW
I/O
I
I/O
I/O
I
I/O
I/O
O
I/O
I/O
I
I/O
I/O
I
I/O
I/O
O
I/O
I
I/O
O
I/O
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MT6628T
Data Sheet
Confidential A
Symbol
UART_CTS
PCM_CLK
PCM_SYNC
PCM_OUT
PCM_IN
GPIO5
I2S_CLK
I2S_WS
WLCSP Power domain
bump
DVDDIO
E9
DVDDIO
A10
DVDDIO
D10
DVDDIO
B10
DVDDIO
A9
B9 DVDDIO
DVDDIO
F8
E7 DVDDIO
Description
GPIO11: GPIO11
in/out
Strap pin
UART_CTS: UART
flow control
GPIO10: GPIO10
in/out
PCM_CLK: PCM
interface clock
I2S_CLK: FM I2S
interface clock
DAI_CLK: digital
audio interface clock
GPIO9: GPIO9 in/out
PCM_SYNC: PCM
interface sync
I2S_WS: FM I2S
interface WS
DAI_SYNC: digital
audio interface sync
GPIO8: GPIO8 in/out
PCM_OUT: PCM
interface output data
I2S_DATA_OUT: I2S
interface output data
DAI_TX: digital audio
interface TX data
GPIO7: GPIO7 in/out
PCM_IN: PCM
interface input data
I2S_DATA_OUT: I2S
interface output data
DAI_RX: digital audio
interface RX data
GPIO6: GPIO6 in/out
GPIO5: GPIO5in/out
I2S_CLK: FM I2S
interface clock
PCM2CLK: PCM2
interface clock
GPIO4: GPIO4 in/out
I2S_WS: FM I2S word
select
PU/PD
PU/SW
PD/SW
PD/SW
PD/SW
PD/SW
PD/SW
PD/SW
PD/SW
I/O
I/O
I
I/O
I/O
I/O
I
I/O
I/O
I/O
I
I/O
O
O
O
I/O
I
O
I
I/O
I/O
I/O
I/O
I/O
I/O
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MT6628T
Data Sheet
Confidential A
Symbol
I2S_DATA_OUT
WIFI_INT_B
BGF_INT_B
WLCSP Power domain
bump
DVDDIO
D7
DVDDIO
H8
DVDDIO
K7
Description
PCM2SYNC: PCM2
interface sync
GPIO3: GPIO3 in/out
I2S_DATA_OUT: FM
I2S data output
PCM2OUT: PCM2
synchronous data
output
GPIO2: GPIO2 in/out
WIFI_INT_B: WLAN
host interrupt
GPIO1: GPIO1 in/out
ALL_INT_B: All
interrupt to host
BGF_INT_B: BT & FM
host interrupt
GPIO0: GPIO0 in/out
Table 1. Pin descriptions
PU/PD
PD/SW
PU/SW
PU/SW
I/O
I/O
I/O
O
O
I/O
O
I/O
O
O
I/O
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2.1.1
Strapping Table
ANTSEL1
0
1
Description
TCXO
Xtal
Table 2. Clock source selection
ANTSEL2
0
1
Description
SDIO
SPI
Table 3. WLAN host interface selection
UART_RTS
0
1
Description
UART
SDIO
Table 4. Common interface selection
2.2
2.2.1
Package Information
WLCSP Packaging
TOP VIEW
MT6628T
Data Sheet
Confidential A
10
9
8
MTK
7 MT6628TP
6
5
DDDD-####
4 XXXXXXX
3
2
1
P: Package type code (WLCSP)
DDDD: Date code
####: Internal control code
XXXXXXX: LOT NO.
ABCDEFGHJKL
PIN #1
Figure 2. MT6628T WLCSP top marking
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MT6628T
Data Sheet
Confidential A
Figure 3. MT6628T WLCSP POD (a)
Figure 4. MT6628T WLCSP POD (b)
MediaTek Confidential
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Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.
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MT6628T
Data Sheet
Confidential A
Bump coordinates:
Figure 5. MT6628T WLCSP POD (c)
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MT6628T
Data Sheet
Confidential A
2.3 Ordering guide
Model
AD6546BCPZ
AD6546BCPZ-REEL
Temperature Range
-20°C to +85°C
Package
LFCSP-40
Shipping Medium
Tray
Tape & Reel
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3 Electrical Characteristics
3.1 PMU Description
The power management unit (PMU) contains Under-Voltage Lockout (UVLO) circuit, Low Dropout
Regulators (LDOs), LDO switch (TLDO_SW), buck converter and reference band-gap circuit.
The PMU integrates three LDOs and one buck converter. Those circuits are optimized for the given
functions by balancing quiescent current, dropout voltage, line/load regulation, ripple rejection and
output noise.
The input voltage of the buck converter ranges from 2.5V to 4.4V. Its output voltage is 1.7V and feeds
into the input power of the RF circuit and input power of CLDO (core LDO) which has 1.2V output
voltage for all digital circuits.
There is only one PA LDO for WLAN with output voltage of 3.3V. There is also one dedicated LDO
which provides 2.85V output voltage for RF blocks, ANTSEL IO power and TCXO via TLDO switch
(TLDO_SW).
3.1.1 Under-Voltage Lockout (UVLO)
The UVLO state in the PMU prevents startup if the initial voltage of the main battery is below 2.15V
threshold. It ensures that MT6628T is powered on with the battery in good condition. The UVLO
function is performed by a hysteretic comparator which ensures smooth power-on sequence. In
addition, when the battery voltage is getting lower, it will enter the UVLO state, and the PMU will be
turned off by itself to prevent further discharging.
3.1.2 WF_PA_LDO
WF_PA_LDO converts the battery input to a 3.3V supply for using WiFi RF PA circuits. It is optimized
for high-performance and adequate quiescent current.
3.1.3 CLDO
One CLDO is integrated in the PMU to supply digital core. It converts voltage from1.7V input to 1.2V
output which suits the digital circuits. The input is typically connected to the bucks output.
3.1.4 Buck Converter
The regulator is a DC-DC step-down converter (buck converter) to source 300mA (max.) with 2.0V to
1.7V programmable output voltage based on the software register setting. It supplies power for the RF
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circuitry and CLDO. The buck converter is optimized for high-efficiency, low-EMI, and low quiescent
current.
3.1.5 PMU Power Connection
Two power connection methods are suggested. One is for normal mode, and the other is for low-
power mode. In the normal mode, the voltage source for RF and digital core LDO is from the DC-DC
converter. The voltage source of PA and TCXO/XTAL LDOs is from VBAT directly. The 1.8V or 2.8V IO
voltages are from the host side. The connection structure is shown in the figure below.
In the system sleep mode, PA LDO and TCXO/XTAL LDO are turned off. The voltage source of the
digital core LDO is switched to IO voltage instead of the DC-DC converter, which is also turned off.
TLDO_SW
TLDO
(2.85V)
WF_PA_LDO
(3.3V)
DVDDIO*(1.8/2.8V)
AVDD28_TLDO_SW
TCXO
OSC_IN
IO
REF CLK
ANTSEL IO power
AVDD28_FM
AVDD28_TLDO
AVDD28_OSC
WFLDO
AVDD33_TX_WBT
FM RF
RF
Battery
2.3~4.4V AVDD55_*
BUCK
(1.7V)
CLDO
(1.2V)
CLDO
DVDD
Digital
Block
LXBK
AVDD17_CLDO_IN
BUCK LC
Figure 6. Normal mode power connection
Note that due to legacy naming, AVDD16_* is actually operated in 1.7V.
AVDD16_*
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3.2 Absolute Maximum Ratings
Symbol
DVDDIO
DVDDIO_SDIO
DVDD
VCCRTC
CLDO
TLDO
WFLDO
TLDO_SW
AVDD28_*
AVDD33_*
AVDD16_*
AVDD55_SMPS
AVDD55_MISC
TSTG
TA
Parameter
1.8V/2.8V digital IO power supply
1.8V or 2.8V SDIO digital IO power supply
Digital 1.2V power supply
RTC power supply
Internal core LDO power supply
Rating
-0.3 to 3.6
-0.3 to 3.6
-0.3 to 1.32
-0.3 to 3.6
-0.3 to 3.6
Internal LDO power supply
-0.3 to 4.4
TLDO switch for TCXO
RF power supply
-0.3 to 3.6
-0.3 to 3.6
RF power supply
BUCK power supply
Power-on circuit supply
Storage temperature
Operating temperature
-0.3 to 1.8
-0.3 to 4.4
-0.3 to 4.4
-60 to +150
-40 to +85
Table 5. Absolute maximum ratings
Unit
V
V
V
V
V
V
V
V
V
V
V
°C
°C
3.3 Recommended Operating Range
Symbol
DVDDIO
DVDDIO_SDIO
DVDD
VCCRTC
AVDD16_*
AVDD28_*
AVDD33_*
AVDD55_SMPS
AVDD55_MISC
Tj
Ta
Tstg
Parameter
Min. Typ. Max. Unit
2.8V digital power supply
2.0 2.8 3.3
V
1.8V digital power supply
1.6 1.8 2.0
V
Digital core power supply
1.08 1.2 1.32 V
RTC power supply
2.52 2.8 3.08
1.62 1.8 1.98
V
V
RF power supply
1.6 1.7 1.8
V
RF power supply
2.66 2.8 2.94 V
RF power supply
3.14 3.3 3.46 V
BUCK power supply
2.5 3.8 4.4
V
Power-on circuit supply
2.3 3.8 4.4
V
Commercial junction operating temperature 0 25 115 °C
Industry junction operating temperature
-40 25 125 °C
Operation temperature
-40 25 85 °C
Storage temperature
-60 25 150 °C
Table 6. Recommended operating range
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MT6628T
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3.4 PMU Electrical Characteristics
3.4.1 PMU Characteristics
Parameter
Conditions
PMU_EN = 0: Shut down current
2.3V < VBAT < 4.3V
VBAT = 3.8V
4.3V < VBAT
VBAT = 4.4V
Under Voltage Lock-Out (UVLO)
Under voltage rising threshold
Under voltage falling threshold
PMU_EN Voltage Level
High voltage
Low voltage
Thermal Shutdown
Threshold
Hysteresis
LDO Enable Response Time
Parameter
SMPS Voltage
Input voltage
Output voltage (OUT_BK)
Output current (Imax)
Quiescent current
Line regulation
Load regulation
PWM mode switching frequency
PWM mode ripple voltage
Burst mode ripple voltage
PFM/PWM mode switching
condition
Efficiency (PWM)
Efficiency (PFM)
Digital Core Voltage
Conditions
@150mA
Static load
Static load
VBAT = 3.8V
Min. Typ. Max. Unit
20 25 μA
25 35 μA
2.25
2.15
V
V
1.4 V
1V
150 °C
40 °C
250 μs
Min. Typ. Max. Unit
2.5 3.8 4.4
V
1.6 1.7 1.8
V
300 mA
40 uA
0.5 %
30 mV
1.7 MHz
20 mV
40 mV
50 mA
84 %
82 %
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MT6628T
Data Sheet
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Parameter
Input voltage
Output voltage (V_CLDO)
Output current (Imax)
Quiescent current
Drop-out voltage
Start-up time
Line regulation
Load regulation
External output capacitor
WLAN PA Voltage
Input voltage
Output voltage (VWIFI_PALDO)
Output current (Imax)
Quiescent current
Line regulation
Load regulation
Output noise voltage
PSRR
Drop-out voltage
Start-up time
External output capacitor
TLDO Voltage
Input voltage
Output voltage (VTLDO)
Output current (Imax)
Quiescent current
Line regulation
Load regulation
Output noise voltage
Conditions
0.5*Imax
1*Imax
1mA ~ Imax (full-load)
1mA ~ Imax (full-load)
f = 10Hz to 80kHz
At 1kHz
At 30kHz
0.5*Imax
1*Imax
1mA ~ Imax (full-load)
f = 10Hz to 80kHz
Min.
1.6
1.1
Typ.
1.7
1.2
15
250
350
1
Max.
1.8
1.3
200
450
12
12
Unit
V
V
mA
uA
mV
mV
us
mV
mV
uF
2.3 3.8 4.4
V
2.3 3.3 3.465 V
300 mA
67 uA
33 mV
33 mV
60 uVrms
60 dB
40 dB
250 mV
350
3.2(2.2+1)
320
mV
us
uF
2.3
2.71
3.8
2.85
42
60
4.4
2.99
100
V
V
mA
uA
1%
1%
uVrms
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Parameter
PSRR
Drop-out voltage
Start-up time
External output capacitor
TLDO switch
Input voltage
Output voltage (TLDO_SW)
Output current (Imax)
External output capacitor
Conditions
At 1kHz
At 30kHz
0.5*Imax
1*Imax
Min.
60
40
Typ.
250
350
1
Max.
320
Unit
dB
dB
mV
mV
us
uF
2.66
2.85
1
10
Table 7. PMU characteristics
V
V
mA
uF
3.4.2 PMU Summary List
Item
1
2
3
4
5
6
LDO/Switcher
DVDDIO18
SMPS
VCORE
WFLDO
TLDO
TLDO_SW
Voltage
1.6V/1.8V/2.0V
1.7V
1.2V
3.3V
2.85V
2.8V
Current
400mA
300mA
200mA
300mA
100mA
10mA
Description
Digital 1.8V IO
Buck output
Digtial CORE
WLAN PA LDO
TCXO LDO
TCXO SW
Table 8. PMU summary list
Note: All the characteristic values are guaranteed at room temperature (25°C).
3.5 XOSC32
3.5.1 Block Description
The low-power 32-kHz crystal oscillator, XOSC32, is designed to work with an external piezoelectric
32.768 kHz crystal and a load composed of two functional capacitors, as shown in the figure below.
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Figure 7. Block diagram of XOSC32
3.5.2
Functional Specifications of XOSC32
Symbol
VCCRTC
Tosc
Dcyc
Parameter
Analog power supply
Start-up time
Duty cycle
Current consumption
Min.
Typ.
Max.
1 2.8 3
1
50
5
Table 9. Functional specifications of XOSC32
Unit
V
sec
%
μA
3.5.3
Recommendations for Crystal Parameters for XOSC32
Symbol
F
GL
f/f
ESR
C0
CL1
Parameter
Frequency range
Drive level
Frequency tolerance
Series resistance
Static capacitance
Load capacitance
Min.
Typ.
Max.
32768
5
+/- 20
50
1.6
6 12.5
Table 10. Recommended parameters of the 32 kHz crystal
Unit
Hz
uW
ppm
KΩ
pF
pF
1 CL is the parallel combination of C1 and C2 in the block diagram.
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3.6 DC Electrical Characteristics for 2.8 Volts Operation
Symbol
VIL
VIH
VT-
VT+
VOL
Parameter
Input low voltage
Input high voltage
Schmitt trigger negative going
threshold voltage
Schmitt trigger
positive going threshold voltage
Output low voltage
Condition
LVTTL
LVTTL
|IOL| = 1.6~14mA
VOH Output high voltage
|IOH| = 1.6~14mA
RPU Input pull-up resistance
PU=high, PD=low
RPD Input pull-down resistance PU=low, PD=high
Table 11. Pin descriptions
Min.
-0.28
2.0
0.68
Max.
0.6
3.08
1.36
Unit
V
V
V
1.36
-0.28
2.4
40
40
1.7
0.4
VDD28 +
0.28
190
190
V
V
V
KΩ
KΩ
3.7 DC Electrical Characteristics for 1.8 Volts Operation
Symbol
VIL
VIH
VT-
VT+
VOL
VOH
RPU
RPD
Parameter
Input lower voltage
Input high voltage
Schmitt trigger negative
going threshold voltage
Schmitt trigger
Positive going threshold
voltage
Output low voltage
Condition
LVTTL
LVTTL
|IOL| = 1.6~14mA
Output high voltage
|IOH| = 1.6~14mA
Input pull-up resistance
PU=high, PD=low
Input pull-down resistance PU=low, PD=high
Table 12. Pin descriptions
Min.
-0.18
1.5
0.44
Max.
0.4
1.98
0.88
Unit
V
V
V
0.88
1.1
-0.18
1.4
40
40
0.4
VDD18 +
0.18
190
190
V
V
V
KΩ
KΩ
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ESD CAUTION
MT6628T is ESD (electrostatic discharge) sensitive device and may be damaged with ESD or spike
voltage. Although MT6628T is with built-in ESD protection circuitry, please handle with care to avoid
the permanent malfunction or the performance degradation.
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