Chapter 48

Compact I2C-controllable quad synchronous step-down DC/DC regulator for power-conscious portable processors

Jim Drew

Abstract

The LTC3562, a compact I2C-controllable quad synchronous step-down DC/DC regulator for power-conscious portable processors, is described.

Keywords

Synchronous buck regulator

LTC3562

Introduction

The LTC3562 quad output step-down regulator is designed for multicore handheld microprocessor applications that operate from a single Li-Ion battery. Its four monolithic, high efficiency buck regulators support Intel’s mobile CPU P-State and C-State energy saving operating modes. The output voltages are independently controllable via I2C, and each output can be independently started and shut down. Designers ...

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