Datasheet
SLVS230G − SEPTEMBER 1999 − REVISED JANUARY 2004
www.ti.com
1
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
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.
T
A
− Free-Air Temperature − °C
−40 0 20 120
10
3
−60 40 60 80 100
− Dropout Voltage − mV
V
DO
TPS77x33
DROPOUT VOLTAGE
vs
FREE-AIR TEMPERATURE
10
2
10
1
10
0
10
−1
10
−2
−20 140
I
O
= 750 mA
I
O
= 10 mA
I
O
= 0
C
o
= 10 µF
t − Time − µs
TPS77x33
LOAD TRANSIENT RESPONSE
I − Output Current − mA
O
V
O
− Change in∆
Output Voltage − mV
500
0
604020 80 100 140120 160 180 200
0
0
50
−50
1000
C
o
= 2x47 µF
ESR = 1/2x100 mΩ
V
O
= 3.3 V
V
I
= 4.3 V
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Copyright 1999 − 2004, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
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2
3
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8
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6
5
GND
EN
IN
IN
RESET
/PG
FB/NC
OUT
OUT
D PACKAGE
(TOP VIEW)
NC − No internal connection
GND/HSINK
GND/HSINK
GND
NC
EN
IN
IN
NC
GND/HSINK
GND/HSINK
GND/HSINK
GND/HSINK
NC
NC
RESET
/PG
FB/NC
OUT
OUT
GND/HSINK
GND/HSINK
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2
3
4
5
6
7
8
9
10
20
19
18
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15
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PWP PACKAGE
(TOP VIEW)