Logic Controlled,

High-Side Power Switch

ADP194

Rev. 0

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FEATURES

Low input voltage range: 1.1 V to 3.6 V

500 mA continuous operating current

Built-in level shift for control logic that can be operated

by 1.2 V logic

Low 2 μA (maximum) ground current

Ultralow shutdown current <0.7 μA

Reverse current blocking

Ultrasmall 0.8 mm × 0.8 mm × 0.5mm, 4-ball, 0.4 mm

pitch WLCSP

APPLICATIONS

Mobile phones

Digital cameras and audio devices

Portable and battery-powered equipment

TYPICAL APPLICATIONS CIRCUIT

GND

EN

+

–

LOAD

VIN

VOUT

ADP194

LEVEL SHIFT

AND SLEW

RATE CONTROL

OFF

ON

REVERSE

POLARITY

PROTECTION

Figure 1.

GENERAL DESCRIPTION

The ADP194 is a high-side load switch designed for operation

from 1.1 V to 3.6 V and is protected against reverse current flow

from output to input. This load switch provides power domain

isolation for extended power battery life. The device contains a

low on-resistance P-channel MOSFET that supports more than

500 mA of continuous load current and minimizes power loss.

The low 2 μA (maximum) ground current and ultralow shut-

down current make the ADP194 ideal for battery-operated

portable equipment. The built-in level shifter in the enable logic

input makes the ADP194 compatible with modern processors

and GPIO controllers.

Beyond operating performance, the ADP194 occupies minimal

printed circuit board (PCB) space with an area of less than

an ultrasmall 0.8 mm × 0.8 mm, 4-ball, 0.4 mm pitch WLCSP.