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FEATURES

150-mA Low-Dropout Regulator

Available in 2.5 V, 3.3 V

Programmable Slew Rate Control

Output Noise Typically 56 μVRMS

Only 17 μA Quiescent Current at 150 mA

1 μA Quiescent Current in Standby Mode

Dropout Voltage Typically 150 mV at 150 mA

(TPS78833)

Over Current Limitation

–40°C to 125°C Operating Junction

Temperature Range

5-Pin SOT-23 (DBV) Package

DESCRIPTION

The TPS78825 and TPS78833 are very small (SOT-23)

package, low-noise LDOs that regulate the output

voltage to 2.5 V and 3.3 V with input voltage ranging

from 2.7 V to an absolute maximum of 13.5 V. These

devices output 150 mA with a peak current of 350 mA

(typ). The TPS788xx family uses the SR pin to program

the output voltage slew rate to control the in-rush

current. This is specifically used in the USB application

where large load capacitance is present at start-up. The

TPS788xx devices use only 17 μA of quiescent current

and exhibit only 56 μVRMS of output voltage noise using

a 10 μF output capacitor.

The usual PNP pass transistor has been replaced by a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

very low, typically 150 mV at 150 mA of load current, and

is directly proportional to the load current.

The TPS788xx also features a logic-enabled sleep

mode to shut down the regulator, reducing quiescent

current to 1 μA typical at TJ = 25°C.