TPS71025
LOW-DROPOUT VOLTAGE REGULATOR
SLVS162A – MAY 1997 – REVISED MAY 1998
D OR P PACKAGE
(TOP VIEW)
2.5-V Fixed-Output Regulator
Very Low-Dropout (LDO) Voltage . . . 57 mV
GND
EN
IN
NC
1
2
3
4
8
7
6
5
Typical at I = 100 mA
O
SENSE
OUT
OUT
Very Low Quiescent Current, Independent
of Load . . . 292 µA Typ
IN
Extremely Low Sleep-State Current,
0.5 µA Max
2% Tolerance Over Specified Conditions
Output Current Range . . . 0 mA to 500 mA
PW PACKAGE
(TOP VIEW)
Available in Space Saving 8-Pin SOIC and
20-Pin TSSOP Packages
GND
GND
GND
NC
NC
EN
1
2
3
4
5
6
7
8
9
10
20 NC
19
18
17
16
15
14
13
12
11
NC
0°C to 125°C Operating Junction
Temperature Range
NC
NC
NC
description
SENSE
OUT
OUT
NC
NC
IN
The TPS71025 low-dropout regulator offers an
order of magnitude reduction in both dropout
voltage and quiescent current over conventional
LDO performance. The improvement results from
replacing the typical pnp pass transistor with a
PMOS device.
IN
IN
NC
NC – No internal connection
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (maximum of 95 mV
at an output current of 100 mA) and is directly proportional to the output current (see Figure 1). Additionally,
since the PMOS pass element is a voltage-driven device, the quiescent current is very low and remains
independent of output loading (typically 292 µA over the full range of output current, 0 mA to 500 mA). These
two key specifications yield a significant improvement in operating life for battery-powered systems. The
TPS71025 also features a sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator,
reducing the quiescent current to 0.5 µA maximum at T = 25°C.
J
AVAILABLE OPTIONS
OUTPUT VOLTAGE
PACKAGED DEVICES
(V)
CHIP FORM
(Y)
T
J
SMALL OUTLINE
(D)
PLASTIC DIP
(P)
TSSOP
(PW)
MIN
TYP
2.5
MAX
0°C to 125°C
2.45
2.55
TPS71025D
TPS71025P
TPS71025PWLE
TPS71025Y
The D package is availabe taped and reeled. Add R suffix to device type (e.g., TPS71025DR). The PW package is only available left-end taped
and reeled and is indicated by the LE suffix on the device type.
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.
Copyright 1997, Texas Instruments Incorporated
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.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265