LM3687 Datasheet (National Semiconductor) - Step-Down DC-DC Converter

LM3687, Step-Down DC-DC Converter

The LM3687 is a step-down DC-DC converter with an integrated low dropout Linear Regulator optimized for powering ultra-low voltage circuits from a single Li-Ion cell or 3 cell NiMH/NiCd batteries.

It provides a dual output with fixed output voltages and combined load current up to 750mA in post www.

LM3687 Features

* and performance for mobile phones and similar portable applications with complex power management systems. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved efficiency over the full load current range. During full-power operation, a fixed-frequency 1.8MHz