TPS7201Q, TPS7233Q, TPS7248Q, TPS7250Q TPS7201Y, TPS7233Y, TPS7248Y, TPS7250Y MICROPOWER LOW-DROPOUT (LDO) VOLTAGE REGULATORS

SLVS102E - MARCH 1995 - REVISED JANUARY 1997

features

Available in 5-V, 4.85-V, and 3.3-V Fixed-Output and Adjustable Versions
Dropout Voltage <85 mV Max at I_O = 100 mA (TPS7250)
Low Quiescent Current, Independent of Load, 180 uA 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 uA 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 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 quiescentcurrent is very low (300 uA 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 feature 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 uA 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 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).

Title: MICROPOWER LOW-DROPOUT(LDO) VOLTAGE REGULATORS
Product Family: VOLTAGE REGULATORS
Device Functionality: VOLTAGE REGULATORS
Orderable Devices: TPS7201QD, TPS7201QDR, TPS7201QP, TPS7201QPWLE, TPS7233QD, TPS7233QDR, TPS7233QP, TPS7233QPWLE, TPS7248QD, TPS7248QDR, TPS7248QP, TPS7248QPWLE, TPS7250QD, TPS7250QDR, TPS7250QP, TPS7250QPWLE

View the complete PDF datasheet: slvs102e.pdf (508 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:TPS7201, TPS7233, TPS7248, TPS7250

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