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TPS74701 Datasheet(PDF) 4 Page - Texas Instruments

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Part # TPS74701
Description  500mA Low-Dropout Linear Regulator with Programmable Soft-Start
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS74701 Datasheet(HTML) 4 Page - Texas Instruments

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FUNCTIONAL BLOCK DIAGRAM
Thermal
Limit
Soft-Start
Discharge
OUT
V
OUT
FB
PG
IN
BIAS
SS
EN
Hysteresis
andDeglitch
Current
Limit
UVLO
0.44 A
m
0.8V
Reference
0.9 ´ V
REF
GND
C
SS
R
1
R
2
TPS74701
SBVS099A – NOVEMBER 2007 – REVISED NOVEMBER 2007
Table 1. Standard 1% Resistor Values for Programming the Output Voltage(1)
R1 (kΩ)
R2 (kΩ)
VOUT (V)
Short
Open
0.8
0.619
4.99
0.9
1.13
4.53
1.0
1.37
4.42
1.05
1.87
4.99
1.1
2.49
4.99
1.2
4.12
4.75
1.5
3.57
2.87
1.8
3.57
1.69
2.5
3.57
1.15
3.3
(1)
VOUT = 0.8 × (1 + R1/R2).
Table 2. Standard Capacitor Values for Programming the Soft-Start Time(1)
CSS
SOFT-START TIME
Open
0.1ms
270pF
0.5ms
560pF
1ms
2.7nF
5ms
5.6nF
10ms
0.01
µF
18ms
(1)
tSS(s) = 0.8 × CSS(F)/4.4 × 10
–7.
4
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Copyright © 2007, Texas Instruments Incorporated
Product Folder Link(s): TPS74701


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