FEATURES

Qualified for Automotive Applications

10-mA Low-Dropout Regulator

Ultralow 1.2-μA Quiescent Current at 10 mA

5-Pin SC70/SOT-323 (DCK) Package

Integrated Power Good Output

Stable With Any Capacitor (>0.47 μF)

Dropout Voltage Typically 105 mV at 10 mA

(TPS79733)

Over Current Limitation

−40°C to 125°C Operating Junction

Temperature Range

APPLICATIONS

Battery Powered Microcontrollers and

Microprocessors

DESCRIPTION

The TPS797xx family of low-dropout (LDO) voltage

regulators offers the benefits of low-dropout voltage and

ultralow-power operation. The device is stable with any

capacitor (>0.47 μF). Therefore, implementations of

this device require little board space due to the

miniaturized packaging and potentially small output

capacitor. In addition, the family includes an integrated

open drain active-high power good (PG) output.

Intended for use in microcontroller based,

battery-powered applications, the TPS797xx family’s

low dropout and ultralow-powered operation results in

a significant increase in system battery operating life.

The small packaging minimizes consumption of board

space.

The device is enabled when the applied voltage

exceeds the minimum input voltage. The usual PNP

pass transistor has been replaced by a PMOS pass

element. Because the PMOS pass element behaves as

a low-value resistor, the dropout voltage is low, typically

105 mV at 10 mA of load current and is directly

proportional to the load current. The quiescent current

is ultralow (1.2 μA typically) and is stable over the entire

range of output load current (0 mA to 10 mA). When

properly configured with a pullup resistor, the PG output

can be used to implement a power-on reset or low

battery indicator. The TPS797xx is offered in 1.8-V, 3-V,

and 3.3-V fixed options.