NCP1421 Datasheet (ON) - Boost Converter

NCP1421, Boost Converter

Pin Symbol Description 1 FB Output Voltage Feedback Input.

2 LBI/EN Low *Battery Detector Input and IC Enable.

With this pin pulled down below 0.5 V, the device is disabled and enters the shutdown mode.

3 LBO Open *Drain Low *Battery Detector Output.

Output is LOW whe

NCP1421 Boost Converter - Sync-Rect, PFM, DC-DC, True-Cutoff, Ring-Killer 600 mA NCP1421 is a monolithic micropower high frequency step up switching converter IC specially designed for battery operated hand held electronic products up to 600 mA loading.

It integrates Sync Rect to improve efficiency and to eliminate the external Schottky Diode.

High switching frequency (up to 1.2 MHz) allows for a low profile, small sized inductor and output capaci

NCP1421 Features

* for various battery

* operated applications. With all these functions on, the quiescent supply current is typically only 8.5 mA. This device is available in the compact and low profile Micro8t package. Features

* High Efficiency: 94% for 3.3 V Output at 200 mA from 2.5 V Input 88% for