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TPS77701, TPS77715, TPS77718, TPS77725, TPS77733 with RESET OUTPUT TPS77801, TPS77815, TPS77818, TPS77825, TPS77833 with PG OUTPUT
FASTĆTRANSIENTĆRESPONSE 750ĆmA LOWĆDROPOUT LINEAR REGULATORS
SLVS230G − SEPTEMBER 1999 − REVISED JANUARY 2004
D Open Drain Power-On Reset With 200 ms
Delay (TPS777xx)
D Open Drain Power Good (TPS778xx) D 750-mA Low-Dropout Voltage Regulator D Available in 1.5-V, 1.8-V, 2.5-V, 3.3-V Fixed
Output and Adjustable Versions
D Dropout Voltage to 260 mV (Typ) at 750 mA
(TPS77x33)
D Ultralow 85 mA Typical Quiescent Current D Fast Transient Response D 2% Tolerance Over Specified Conditions for
Fixed-Output Versions
D 8-Pin SOIC and 20-Pin TSSOP PowerPAD
(PWP) Package
D Thermal Shutdown Protection
GND/HSINK GND/HSINK
GND NC EN IN IN NC
GND/HSINK GND/HSINK
PWP PACKAGE (TOP VIEW)
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
NC − No internal connection
D PACKAGE (TOP VIEW)
GND/HSINK GND/HSINK NC NC RESET/PG FB/NC OUT OUT GND/HSINK GND/HSINK
description
TPS777xx and TPS778xx are designed to have a fast transient response and be stable with a 10 µF low ESR capacitor. This combination provides high performance at a reasonable cost.
GND 1 EN 2 IN 3 IN 4
8 RESET/PG 7 FB/NC 6 OUT 5 OUT
TPS77x33 DROPOUT VOLTAGE
vs FREE-AIR TEMPERATURE
103
102
IO = 750 mA
TPS77x33 LOAD TRANSIENT RESPONSE
Co = 2x47 µF
50
ESR = 1/2x100 mΩ
VO = 3.3 V
VI = 4.3 V 0
∆ VO − Change in Output Voltage − mV
IO − Output Current − mA
VDO − Dropout Voltage − mV
101 IO = 10 mA
100
−50 1000
500
10−1
Co = 10 µF 10−2
−60 −40 −20 0
IO = 0 20 40 60 80 100 120 140
TA − Free-Air Temperature − °C
0
0 20 40 60 80 100 120 140 160 180 200 t − Time − µs
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All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright 1999 − 2004, Texas Instruments Incorporated1
TPS77701, TPS77715, TPS77718, TPS77725, TPS77733 with RESET OUTPUT TPS77801, TPS77815, TPS77818, TPS77825, TPS77833 with PG OUTPUT FASTĆTRANSIENTĆRESPONSE 750ĆmA LOWĆDROPOUT LINEAR REGULATORS
SLVS230G − SEPTEMBER 1999 − REVISED JANUARY 2004
description (continued)
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Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 260 mV at an output current of 750 mA for the TPS77x33) and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent of output loading (typically 85 µA over the full range of output current, 0 mA to 750 mA). These two key s.