3.6 V, 500 mA Logic Controlled

High-Side Load Switch

Data Sheet

ADP199

Rev. 0

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FEATURES

Low input voltage range: 0.9 V to 3.6 V

500 mA continuous operating current at 85°C

1.2 V logic compatible enable input

Low 6 μA quiescent current, independent of load current

Ultralow shutdown current: <100 nA

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

0.4 mm pitch WLCSP

APPLICATIONS

Low operating voltage processors

Mobile phones

Digital cameras and audio devices

Portable and battery-powered equipment

Optical XMT/RCVR modules

GENERAL DESCRIPTION

The ADP199 is a high-side load switch designed for opera-

tion between 0.9 V to 3.6 V. A load switch provides power

domain isolation, thereby helping to keep subsystems isolated

and powered independently, and enabling reduced power

consumption.

The ADP199 contains a low on-resistance, N-channel MOSFET

to minimize power loss, and supports over 500 mA of continuous

load current. The low 6 μA quiescent current and ultralow

shutdown current make the ADP199 ideal for battery-operated

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

makes the ADP199 compatible with many processors and GPIO

controllers.

In addition to high performance, the ADP199 occupies mini-

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

The ADP199 is available in an ultra-small, 0.8 mm × 0.8 mm ×

0.5 mm, 4-ball, 0.4 mm pitch WLCSP.

TYPICAL APPLICATIONS CIRCUIT

GND

EN

LOAD

VIN

VOUT

ADP199

CHARGE PUMP

AND SLEW RATE

CONTROL

OFF

ON

+

–

4Ω

Figure 1.