Texas Instruments -TPS7201Q, TPS7225Q, TPS7230Q, TPS7233Q, TPS7248Q, TPS7250Q, TPS72xxY MICROPOWER LOW-DROPOUT (LDO) VOLTAGE REGULATORS

TPS7201Q, TPS7225Q, TPS7230Q

TPS7233Q, TPS7248Q, TPS7250Q, TPS72xx Y

MICROPOWER LOW-DROPOUT (LDO) VOLTAGE REGULATORS

SLVS102G – MARCH 1995 – REVISED JUNE 2000

Available in 5-V, 4.85-V, 3.3-V, 3.0-V, and D, P, OR PW PACKAGE (TOP VIEW)

2.5-V Fixed-Output and Adjustable Versions Dropout Voltage <85 m V Max at

SENSE†/FB‡ OUT

IO = 100 m A (TPS7250)

RESET/PG OUT

Low Quiescent Current, Independent of GND IN Load, 180 µA Typ

EN IN

8-Pin SOIC and 8-Pin TSSOP Package

SENSE – Fixed voltage options only

Output Regulated to ±2% Over Full

(TPS7225, TPS7230, TPS7233, TPS7248,

Operating Range for Fixed-Output Versions

and TPS7250)

Extremely Low Sleep-State Current, FB – Adjustable version only (TPS7201) 0.5 µA Max Power-Good (PG) Status Output

TA = 25°C

description The TPS72xx family of low-dropout (LDO) voltage

TPS7225

regulators offers the benefits of low-dropout voltage, micropower operation, and miniaturized

TPS7230

packaging. These regulators feature extremely low dropout voltages and quiescent currents

compared to conventional LDO regulators. ro lt ag TPS7233

Offered in small-outline integrated-circuit (SOIC)

TPS7248

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.

TPS7250

A combination of new circuit design and process innovation has enabled the usual pnp pass transistor to be replaced by a PMOS device.

IO – Output Current – m A

Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low Figure 1. Typical Dropout Voltage Versus – maximum of 85 m V at 100 m A of load current Output 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 m A to 250 m A). 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 TJ = 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).

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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.

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