Datasheet

TPS7415, TPS7418, TPS7425, TPS7430, TPS7433
FAST-TRANSIENT-RESPONSE USING SMALL OUTPUT CAPACITOR
200-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS212 – DECEMBER 1999
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Fast Transient Response Using Small
Output Capacitor (10 µF)
200-mA Low-Dropout Voltage Regulator
Available in 1.5-V, 1.8-V, 2.5-V, 3-V and 3.3-V
Dropout Voltage Down to 170 mV at 200 mA
(TPS7433)
3% Tolerance Over Specified Conditions
8-Pin SOIC Package
Thermal Shutdown Protection
description
This device is designed to have a fast transient response and be stable with 1-µF capacitors. This combination
provides high performance at a reasonable cost.
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 170 mV
at an output current of 200-mA for the TPS7433). This LDO family also features a sleep mode; applying a TTL
high signal to EN (enable) shuts down the regulator, reducing the quiescent current to less than 1 µA at
T
J
= 25°C.
The TPS74xx is offered in 1.5-V, 1.8-V, 2.5-V, 3-V, and 3.3-V. Output voltage tolerance is specified as a
maximum of 3% over line, load, and temperature ranges. The TPS74xx family is available in 8 pin SOIC
package.
–50
200
50
0
100
0
t – Time – µs
C
O
= 10 µF
TPS7418
LOAD TRANSIENT RESPONSE
0 300200100 400 500 700600 800 900 1000
I – Output Current – mA
O
V
O
– Change in
∆
Output Voltage – mV
di/dt =
T
J
– Junction Temperature – °C
100
0
150
50
–50
300
200
250
– Dropout Voltage – mV
V
DO
TPS7433
DROPOUT VOLTAGE
vs
JUNCTION TEMPERATURE
–25 250 50 75 100 125 150
I
O
= 50 mA
I
O
= 1 mA
I
O
= 75 mA
I
O
= 200 mA
V
I
= 3.2 V
200 mA
25 µs
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.
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, Texas Instruments Incorporated
1
2
3
4
8
7
6
5
EN
NC
NC
IN
SENSE
OUT
GND
IN
D PACKAGE
(TOP VIEW)
NC – No internal connection