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GENERAL DESCRIPTION

The ADP2108 is a high efficiency, low quiescent current stepdown dc-to-dc converter manufactured in two different packages. The total solution requires only three tiny external components. It uses a proprietary, high speed current mode, constant frequency PWM control scheme for excellent stability and transient response. To ensure the longest battery life in portable applications, the ADP2108 has a power save mode that reduces the switching frequency under light load conditions.

FEATURES

Peak efficiency: 95

3 MHz fixed frequency operation

Typical quiescent current: 18 μA

Maximum load current: 600 mA

Input voltage: 2.3 V to 5.5 V

Uses tiny multilayer inductors and capacitors

Current mode architecture for fast load and line

transient response

100 duty cycle low dropout mode

Internal synchronous rectifier

Internal compensation

Internal soft start

Current overload protection

Thermal shutdown protection

Shutdown supply current: 0.2 μA

Available in

5-ball WLCSP

5-lead TSOT

Supported by ADIsimPower? design tool

APPLICATIONS

PDAs and palmtop computers

Wireless handsets

Digital audio, portable media players

Digital cameras, GPS navigation units