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GENERAL DESCRIPTION

The ADP2323 is a full featured, dual output, step-down dc-to-dc regulator based on current-mode architecture. The ADP2323 integrates two high-side power MOSFETs and two low-side drivers for the external N-channel MOSFETs. The two pulse-width mod ulation (PWM) channels can be configured to deliver dual 3 A outputs or a parallel-to-single 6 A output. The regulator operates from input voltages of 4.5 V to 20 V, and the output voltage can be as low as 0.6 V.

FEATURES

Input voltage: 4.5 V to 20 V

±1 output accuracy

Integrated 90 m? typical high-side MOSFET

Flexible output configuration

Dual output: 3 A/3 A

Parallel single output: 6 A

Programmable switching frequency: 250 kHz to 1.2 MHz

External synchronization input with programmable phase

shift, or internal clock output

Selectable PWM or PFM mode operation

Adjustable current limit for small inductor

External compensation and soft start

Startup into precharged output

Supported by ADIsimPower? design tool

APPLICATIONS

Communications infrastructure

Networking and servers

Industrial and instrumentation

Healthcare and medical

Intermediate power rail conversion

DC-to-dc point of load applications