NCP1400A Datasheet | onsemi

100 m A, Fixed Frequency PWM Step-Up Micropower Switching Regulator The NCP1400A series are micropower step- up DC to DC converters that are specifically designed for powering portable equipment from one or two cell battery packs. These devices are designed to startup with a cell voltage of 0.8 V and operate down to less than 0.2 V. With only four external ponents, this series allows a simple means to implement highly efficient converters that are capable of up to 100 m A of output current. Each device consists of an on- chip fixed frequency oscillator, pulse width modulation controller, phase pensated error amplifier that ensures converter stability with discontinuous mode operation, soft- start, voltage reference, driver, and power MOSFET switch with current limit protection. Additionally, a chip enable feature is provided to power down the converter for extended battery life. The NCP1400A device series are available in the TSOP- 5 package with seven standard regulated output voltages. Additional voltages that range from 1.8 V to 4.9 V in 100 m V steps can be manufactured. Features - Extremely Low Startup Voltage of 0.8 V - Operation Down to Less than 0.2 V - Only Four External ponents for Simple Highly Efficient Converters - Up to 100 m A Output Current Capability - Fixed Frequency Pulse Width Modulation Operation - Phase pensated Error Amplifier for Stable Converter Operation - Chip Enable Power Down Capability for Extended Battery Life - These Devices are Pb- Free and are Ro HS pliant Typical Applications - Cellular Telephones - Pagers - Personal Digital Assistants - Electronic Games - Digital Cameras - Camcorders - Handheld Instruments - White LED Torch Light .onsemi. 5 1 TSOP- 5 SN SUFFIX CASE 483 PIN CONNECTIONS AND MARKING DIAGRAM CE 1 5 LX xxx AYW G G OUT...