NCP1422 Datasheet (ON Semiconductor) - Sync-Rect PFM Step-Up DC-DC Converter

NCP1422, Sync-Rect PFM Step-Up DC-DC Converter

Symbol Pin Description FB 1 Output Voltage Feedback Input.

LBI/EN 2 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.

LBO 3 Open *Drain Low *Battery Detector Output.

Output is LOW

DATA SHEET www.onsemi.com Boost Converter Sync-Rect, PFM, DC-DC, True-Cutoff, Ring-Killer 800 mA NCP1422 NCP1422 is a monolithic micropower high frequency step up switching converter IC specially designed for battery operated hand held electronic products up to 800 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

NCP1422 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 DFN

* 10 package. Features

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