TPS7201Q, TPS7225Q, TPS7230Q
TPS7233Q, TPS7248Q, TPS7250Q, TPS72xxY
MICROPOWER LOW-DROPOUT (LDO) VOLTAGE REGULATORS
SLVS102G – MARCH 1995 – REVISED JUNE 2000
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Available in 5-V, 4.85-V, 3.3-V, 3.0-V, and
2.5-V Fixed-Output and Adjustable Versions
Dropout Voltage <85 mV Max at
I
O
= 100 mA (TPS7250)
Low Quiescent Current, Independent of
Load, 180 µA Typ
8-Pin SOIC and 8-Pin TSSOP Package
Output Regulated to ±2% Over Full
Operating Range for Fixed-Output Versions
Extremely Low Sleep-State Current,
0.5 µA Max
Power-Good (PG) Status Output
description
The TPS72xx family of low-dropout (LDO) voltage
regulators offers the benefits of low-dropout
voltage, micropower operation, and miniaturized
packaging. These regulators feature extremely
low dropout voltages and quiescent currents
compared to conventional LDO regulators.
Offered in small-outline integrated-circuit (SOIC)
packages and 8-terminal thin shrink small-outline
(TSSOP), the TPS72xx series devices are ideal
for cost-sensitive designs and for designs where
board space is at a premium.
A combination of new circuit design and process
innovation has enabled the usual pnp pass
transistor to be replaced by a PMOS device.
Because the PMOS pass element behaves as a
low-value resistor , the dropout voltage is very low
– maximum of 85 mV at 100 mA of load current
(TPS7250) – and is directly proportional to the
load current (see Figure 1). Since the PMOS pass
element is a voltage-driven device, the quiescent current is very low (300 µA maximum) and is stable over the
entire range of output load current (0 mA to 250 mA). Intended for use in portable systems such as laptops and
cellular phones, the low-dropout voltage and micropower operation result in a significant increase in system
battery operating life.
The TPS72xx also features a logic-enabled sleep mode to shut down the regulator , reducing quiescent current
to 0.5 µA maximum at T
J
= 25°C. Other features include a power-good function that reports low output voltage
and may be used to implement a power-on reset or a low-battery indicator.
The TPS72xx is offered in 2.5-V, 3-V , 3.3-V, 4.85-V , and 5-V fixed-voltage versions and in an adjustable version
(programmable over the range of 1.2 V to 9.75 V). Output voltage tolerance is specified as a maximum of 2%
over line, load, and temperature ranges (3% for adjustable version).
Copyright 2000, 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.
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.
1
2
3
4
8
7
6
5
SENSE
†
/FB
‡
RESET/PG
GND
EN
OUT
OUT
IN
IN
D, P, OR PW PACKAGE
(TOP VIEW)
†
SENSE – Fixed voltage options only
(TPS7225, TPS7230, TPS7233, TPS7248,
and TPS7250)
‡
FB – Adjustable version only (TPS7201)
Figure 1. Typical Dropout Voltage Versus
Output Current
200
0
0 50 100 150
– Dropout Voltage – mV
400
200 250
100
300
V
DO
I
O
– Output Current – mA
TPS7233
TPS7248
TPS7250
T
A
= 25°C
TPS7230
TPS7225
500
600
