GENERAL DESCRIPTION

The ADP3026 is a highly efficient dual synchronous buck switching regulator controller optimized for converting a battery or adapter input into multiple supply voltages. The ADP3026 provides accurate and reliable short-circuit protection using an internal current sense circuit, which reduces cost and increases overall efficiency. Other protection features include programmable soft start, UVLO, and integrated output undervoltage/overvoltage protection.

FEATURES

Wide input voltage range: 5.5 V to 25 V

High conversion efficiency > 96

Integrated current sense—no external resistor required

Low shutdown current: 19 µA (typical)

Voltage mode PWM with input feed-forward for fast line

transient response

Dual synchronous buck controllers

Built-in gate drive boost circuit for driving external

N-channel MOSFETs

2 fixed output voltages: 3.3 V and 5 V

PWM frequency: 200 kHz

Extensive circuit protection functions

APPLICATIONS

Portable instruments

General-purpose dc-to-dc converters