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TPS65281RGVR Datasheet(PDF) 4 Page - Texas Instruments

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Part # TPS65281RGVR
Description  PRECISION ADJUSTABLE CURRENT LIMITED POWER DISTRIBUTION SWITCH WITH 4.5V TO 18V INPUT VOLTAGE, 3A OUTPUT CURRENT SYNCHRONOUS BUCK REGULATOR
PDF  31 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS65281RGVR Datasheet(HTML) 4 Page - Texas Instruments

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Driver
Current
Limit
CS
Charge
Pump
4 ms Degl .
Time
UVLO
POR
10ms Degl .
Time
enable buffer
current sensing
reverse voltage
comparator
8
SW_OUT
nFAULT
6
5
EN_SW
SW_IN
9
7
AGND
POWER SWITCH
1 .25 M
16
EN
1 .25 M
5 V
VIN
14
LX
11
PGND
13
10
FB
2
COMP
0 .8 V
1 ms
Internal
Soft Start
Current Sensing
(0 .1 V/A)
CS
HS current sensing
CS
LS current sensing
Voltage Reference
Current Bias
LDO
BST
12
V7V
Preregulator
Buck
Controller
15
V7V
enable buffer
Oscillotor
3
ROSC
10 uA
1
SS
error amplifer
PWM comparator
HS driver
LS driver
BUCK
slope
comp
1. 25M
1. 25M
V7 V
RLIM
4
TPS65281, TPS65281-1
SLVSBH7B – JULY 2012 – REVISED DECEMBER 2012
www.ti.com
FUNCTION BLOCK DIAGRAM
4
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Copyright © 2012, Texas Instruments Incorporated
Product Folder Links: TPS65281 TPS65281-1



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