FP6137E [FITIPOWER]
2A BUS TERMINATION REGULATOR;型号: | FP6137E |
厂家: | Fitipower |
描述: | 2A BUS TERMINATION REGULATOR |
文件: | 总7页 (文件大小:392K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
fitipower integrated technology lnc.
2A BUS
TERMINATION REGULATOR
Description
Features
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.
● 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
The FP6137E provides current limit in both
sourcing/sinking mode and thermal shutdown
function which protects the excessive heating due to
high current and high junction temperature.
Applications
● DDR-I, DDR-II, and DDR-III Bus Termination
Voltage
The FP6137E is available in the SOP-8 exposed pad
package.
● SSTL-2 and SSTL-3 Termination
● Active Termination Buses
Pin Assignments
Ordering Information
FP6137E□□□
SP Package (SOP-8 Exposed Pad)
TR: Tape/Reel
8
7
6
5
1
2
VIN
GND
NC
P: Green
G: Green
NC
GND
VCNTL
NC
3
4
REFEN
VOUT
Package Type
SP: SOP-8 (Exposed Pad)
Figure 1. Pin Assignment of FP6137E (Top View)
FP6137E-1.5-FEB-2012
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fitipower integrated technology lnc.
Typical Application Circuit
1.5V/1.8V/2.5V
VIN
VCNTL
3.3V
VIN
VCNTL
RU
100K
FP6137E
0.75V/0.9V/1.25V
VOUT
VOUT
REFEN
CIN
470µF
CCNTL
47µF
CSS
1µF
RD
100K
GND
CVOUT
Q1
470µF
EN
Figure 2. Typical Application Circuit of FP6137E with EC Capacitors
1.5V/1.8V/2.5V
VIN
VCNTL
3.3V
VIN
VCNTL
RU
100K
*A
FP6137E
0.75V/0.9V/1.25V
VOUT
VOUT
REFEN
CIN
10µF
CCNTL
1µF
CSS
1µF
RD
GND
CVOUT
22µF
100K
Q1
EN
*A
Note A: The recommend value of resistor is 10k~100k
Figure 3. Typical Application Circuit of FP6137E with MLCC Capacitors
Functional Pin Description
Pin Name
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.
VIN
GND
Common ground pin. The VOUT sinks current to GND by lower NMOS.
VCNTL
REFEN
VOUT
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 it is capable of sourcing or sinking current
up to peak 2A.
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fitipower integrated technology lnc.
Block Diagram
VCNTL
VIN
+
REFEN
Error
Amp
VOUT
-
Current Limit &
Thermal Shutdown
GND
Figure 4. Block Diagram of FP6137E
Absolute Maximum Ratings
● VIN to GND ---------------------------------------------------------------------------------------------------- 6V
● VCNTL to GND ----------------------------------------------------------------------------------------------- 6V
● Power Dissipation @25°C (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
Note 1:Stresses beyond those listed under “Absolute Maximum Ratings" may cause permanent damage to the device.
Recommended Operating Conditions
● Input Voltage (VIN) -------------------------------------------------------------------------------------------- (1.5V,1.8V,2.5V) ±5%
● Input Voltage (VCNTL) ---------------------------------------------------------------------------------------- (3.3V to 5.5V) ±5%
● Operating Temperature Range (TOPR) ------------------------------------------------------------------- -40ºC to +85ºC
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Electrical Characteristics
(VCNTL=3.3V, VIN=1.5V/1.8V/2.5V, VREFEN=0.5*VIN, COUT=10µF, TA=25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
INPUT
Operation Voltage Range
(DDRI /DDII/ DDR-III)
VCNTL
ICNTL
ISD
3.3
1.5
5
5.5
3.0
30
V
VCNTL Quiescent Current
Shutdown Current
No Load
mA
µA
VREFEN<0.2V
OUTPUT VOLTAGE
Output Offset Voltage
VOS
No Load , (VREFEN-VOUT
IOUT = 0 to 2A
)
-20
2.0
0.6
0
20
20
20
mV
mV
Load Regulation (Note2)
(DDRI/DDII/DDR-III)
|
V
LOAD
|
IOUT = 0 to 2A
PROTECTION
Current Limit
ILIM
TSD
2.5
170
35
A
°C
°C
Thermal Shutdown Temperature
(Note3)
T
SD
Hysteresis
SHUTDOWN CONTROL
Enable High Level
VREF-H
VREF-L
V
V
Shutdown Low Level
0.2
Note 2:Load regulation is measured at a constant junction temperature by using a 20ms low duty cycle current pulse.
Note 3:Guarantee by design.
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Typical Performance Curves
0.65
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.65
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
0.20
VCNTL=3.3V
VCNTL=5V
VCNTL=3.3V
VCNTL=5V
-40
-20
0
20
40
60
80
100
-40
-20
0
20
40
60
80
100
Junction Temperature (oC)
Junction Temperature (oC)
Figure 5. Turn-On Threshold Voltage vs. Junction
Temperature
Figure 6. Turn-Off Threshold Voltage vs. Junction
Temperature
8
8
VOUT=0.9V
6
VOUT=1.25V
6
4
4
VCNTL=5V
VCNTL=5V
2
0
2
0
-2
VCNTL=3.3V
-2
VCNTL=3.3V
-4
-6
-8
-4
-6
-8
-40
-40
-20
0
20
40
60
80
100
-20
0
20
40
60
80
100
Junction Temperature (oC)
Junction Temperature (oC)
Figure 7. Output offset (VOUT-VREFEN) vs. Junction
Temperature
Figure 8. Output offset (VOUT-VREFEN) vs. Junction
Temperature
6
6
Sinking
Sourcing
5
VCNTL=5V, VIN=2.5V
5
VCNTL=3.3V, VIN=2.5V
VCNTL=5V, VIN=2.5V
4
3
2
1
0
4
VCNTL=5V, VIN=1.8V
3
2
VCNTL=3.3V, VIN=1.8V
VCNTL=3.3V, VIN=2.5V
VCNTL=3.3V, VIN=1.8V
V
=5V, V =1.8V
IN
CNTL
1
0
-40
-20
0
20
40
60
80
100
-40
-20
0
20
40
60
80
100
Juncition Temperature (0C)
Juncition Temperature (0C)
Figure 9. Current Limit vs. Junction Temperature
FP6137E-1.5-FEB-2012
Figure 10. Current Limit vs. Junction Temperature
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Typical Performance Curves (Continued)
Source
VCNTL=3.3V
Sink
VCNTL=3.3V
VIN=2.5V, VREFEN=1.25V
VIN=2.5V, VREFEN=1.25V
Figure11. Output Short-Circuit Protection
Figure12. Output Short-Circuit Protection
Switching Frequency=1kHz
VCNTL=3.3V
V=0.9V, 2A
Switching Frequency=1kHz
VCNTL=3.3V
VREFEN=1.25V, 2A
Figure13. 1.25VOUT @ 2A Transient Response
Figure14. 0.9VOUT @ 2A Transient Response
FP6137E-1.5-FEB-2012
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Outline Information
SOP-8 (Exposed Pad) Package (Unit: mm)
DIMENSION IN MILLIMETER
SYMBOLS
UNIT
MIN
1.25
0.00
1.25
0.31
4.80
3.04
3.80
2.15
1.20
5.80
0.40
MAX
1.70
0.15
1.55
0.51
5.00
3.50
4.00
2.41
1.34
6.20
1.27
A
A1
A2
B
D
D1
E
E1
e
H
L
Note:Followed From JEDEC MO-012-E.
Carrier Dimensions
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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