FP6137E

 

2A BUS TERMINATION REGULATOR

 

 

 

Fiti

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FP6137E Datasheet PDF
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FP6137E
2A BUS
TERMINATION REGULATOR
Description
The FP6137E linear regulator is designed to provide
the transient peaks up to 2A sourcing or sinking
capability for DDR SDRAM bus termination
application. The output voltage can track half of input
power by two external voltage divider resistors.
The FP6137E provides current limiting in both
sourcing/sinking mode and thermal shutdown
function which protects the excessive heating due to
high current and high junction temperature.
The FP6137E is available in the SOP-8 (Exposed
Pad) package.
Features
2A Source or Sink Current
Power MOSFET Integrated
Low Output Voltage Offset
Current Limiting Protection
Thermal Shutdown Protection
Adjusted Output by External Resistors
Shutdown for Standby or Suspend Mode
RoHS Compliant
Applications
DDR-I, DDR-II, and DDR-III Bus Termination
Voltage
SSTL-2 and SSTL-3 Termination
Active Termination Buses
Pin Assignments
SP Package (SOP-8<Exposed Pad>)
Figure 1. Pin Assignment of FP6137E (Top View)
Ordering Information
FP6137E□□□
TR: Tape/Reel
P: Green
G: Green
Package Type
SP: SOP-8 (Exposed Pad)
FP6137E-1.3-FEB-2010
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Typical Application Circuit
FP6137E
Figure 2. Typical Application Circuit of FP6137E
Functional Pin Description
Pin Name
VIN
GND
VCNTL
REFEN
VOUT
Pin Function
Power input pin. VIN is the input power supply used to create the external reference voltage for regulating VOUT.
VIN sources current to VOUT by upper NMOS.
Common ground pin. The VOUT sinks current to GND by lower NMOS.
Power input pin. The VCNTL power supplies the internal control circuitry and gate drive voltage.
Chip enable, and input reference voltage pin. The reference voltage is half of the VIN power by two external
voltage divide resistors.
Regulator output pin. VOUT voltage tracks the REFEN voltage and is capable of sourcing or sinking current up to
peak 2A.
FP6137E-1.3-FEB-2010
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Block Diagram
FP6137E
Figure 3. Block Diagram of FP6137E
Absolute Maximum Ratings
VIN to GND---------------------------------------------------------------------------------------------------- 6V
VCNTL to GND ----------------------------------------------------------------------------------------------- 6V
Power Dissipation @25(PD) SOP-8 (Exposed Pad) --------------------------------------------- 1.25W
Package Thermal Resistance (θJA) SOP-8 (Exposed Pad) ----------------------------------------- 80°C/W
Junction Temperature -------------------------------------------------------------------------------------- 150°C
Storage Temperature Range------------------------------------------------------------------------------ -65°C to 150°C
Lead Temperature (Soldering, 10sec.) ----------------------------------------------------------------- 260°C
ESD Susceptibility
HBM(Human Body Mode) --------------------------------------------------------------------------------- 2KV
MM(Machine Mode) ---------------------------------------------------------------------------------------- 200V
Note1Stresses beyond those listed under “Absolute Maximum Ratings" may cause permanent damage to the device.
Recommended Operating Conditions
Input Voltage (VIN) --------------------------------------------------------------------------------------------- 1.5V, 1.8V or 2.5V
Input Voltage (VCNTL) ------------------------------------------------------------------------------------------ 3.3V to 5.5V
Operating Temperature Range (TOPR) -------------------------------------------------------------------- - 40ºC to + 85ºC
FP6137E-1.3-FEB-2010
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FP6137E
Electrical Characteristics
(VCNTL=3.3V, VIN=1.5V/1.8V/2.5V, VREFEN=0.5*VIN, COUT=10uF, TA=25°C, unless otherwise specified)
Parameter
Symbol Test Conditions
Min Typ Max Units
INPUT
Operation Voltage Range
(DDRI /DDII/ DDR-III)
VCNTL Quiescent Current
Shutdown Current
VCNTL
ICNTL
ISD
No Load
VREFEN<0.2V
3.3 5.5
V
1.5 3.0 mA
5 30 uA
OUTPUT VOLTAGE
Output Offset Voltage
Load Regulation (Note2)
(DDRI/DDII/DDR-III)
VOS
| Δ VLOAD |
No Load , (VREFEN-VOUT)
IOUT = 0 to 2A
IOUT = 0 to 2A
-20 0
20 mV
20
mV
20
PROTECTION
Current Limit
Thermal Shutdown Temperature
(Note3)
ILIM
TSD
Δ TSD
Hysteresis
2.0 2.5
170
35
A
°C
°C
SHUTDOWN CONTROL
Enable High Level
VREF-H
0.6 V
Shutdown Low Level
VREF-L
0.2 V
Note2Load regulation is measured at a constant junction temperature by using a 20ms low duty cycle current pulse.
Note3Guarantee by design.
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FP6137E
Typical Performance Curves
0.65
0.60
0.55
0.50 V =3.3V
CNTL
0.45
0.40
0.35
V =5V
CNTL
0.30
0.25
0.20
-40
-20
0 20 40 60
Junction Temperature (oC)
80 100
Figure 4. Turn-On Threshold Voltage vs. Junction
Temperature
8
V =1.25V
OUT
6
4
2
V =5V
CNTL
0
-2
V =3.3V
-4 CNTL
-6
-8
-40
-20
0 20 40 60
Junction Temperature (oC)
80 100
Figure 6. Output offset (VOUT-VREFEN) vs. Junction
Temperature
6
Sourcing
5
V =5V, V =2.5V
CNTL
IN
4
V =5V, V =1.8V
3 CNTL
IN
2
V =3.3V, V =2.5V
CNTL
IN
V =3.3V, V =1.8V
CNTL
IN
1
0
-40 -20
0 20 40 60 80
Juncition Temperature (0C)
100
Figure 8. Current Limit vs. Junction Temperature
FP6137E-1.3-FEB-2010
0.65
0.60
0.55
0.50
V =5V
CNTL
0.45
0.40
0.35 V =3.3V
CNTL
0.30
0.25
0.20
-40
-20
0 20 40 60
Junction Temperature (oC)
80 100
Figure 5. Turn-Off Threshold Voltage vs. Junction
Temperature
8
V =0.9V
OUT
6
4
V =5V
CNTL
2
0
-2 V =3.3V
CNTL
-4
-6
-8
-40
-20
0 20 40 60
Junction Temperature (oC)
80 100
Figure 7. Output offset (VOUT-VREFEN) vs. Junction
Temperature
6
Sinking
5
4
V =3.3V, V =2.5V
CNTL
IN
V =5V, V =2.5V
CNTL
IN
3
2
V =3.3V, V =1.8V
CNTL
IN
V =5V, V =1.8V
CNTL
IN
1
0
-40 -20
0
20 40 60 80 100
Juncition Temperature (0C)
Figure 9. Current Limit vs. Junction Temperature
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Typical Performance Curves (Continued)
Source
VCNTL=3.3V
VIN=2.5V, VREFEN=1.25V
Sink
VCNTL=3.3V
VIN=2.5V, VREFEN=1.25V
FP6137E
Figure10. Output Short-Circuit Protection
Switching Frequency=1kHz
VCNTL=3.3V
VREFEN=1.25V, 2A
Figure11. Output Short-Circuit Protection
Switching Frequency=1kHz
VCNTL=3.3V
VREFEN=0.9V, 2A
Figure12. 1.25VOUT @ 2A Transient Response
Figure13. 0.9VOUT @ 2A Transient Response
FP6137E-1.3-FEB-2010
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FP6137E
Outline Information
SOP- 8 (Exposed Pad) Package (Unit: mm)
SYMBOLS
UNIT
A
A1
A2
B
D
D1
E
E1
e
H
L
DIMENSION IN MILLIMETER
MIN MAX
1.25 1.70
0.00 0.15
1.25 1.55
0.31 0.51
4.80 5.00
1.82 3.35
3.80 4.00
1.82 2.41
1.20 1.34
5.80 6.20
0.40 1.27
NoteFollowed From JEDEC MO-012-E.
Life Support Policy
Fitipower’s products are not authorized for use as critical components in life support devices or other medical systems.
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