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NCP1400A-D Datasheet(PDF) 1 Page - ON Semiconductor |
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NCP1400A-D Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 16 page © Semiconductor Components Industries, LLC, 2004 June, 2004 − Rev. 9 1 Publication Order Number: NCP1400A/D NCP1400A 100 mA, 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 start−up with a cell voltage of 0.8 V and operate down to less than 0.2 V. With only four external components, this series allows a simple means to implement highly efficient converters that are capable of up to 100 mA of output current. Each device consists of an on−chip fixed frequency oscillator, pulse width modulation controller, phase compensated 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 Thin SOT23−5 package with seven standard regulated output voltages. Additional voltages that range from 1.8 V to 4.9 V in 100 mV steps can be manufactured. Features • Extremely Low Start−Up Voltage of 0.8 V • Operation Down to Less than 0.2 V • Only Four External Components for Simple Highly Efficient Converters • Up to 100 mA Output Current Capability • Fixed Frequency Pulse Width Modulation Operation • Phase Compensated Error Amplifier for Stable Converter Operation • Chip Enable Power Down Capability for Extended Battery Life • Pb−Free Packages are Available Typical Applications • Cellular Telephones • Pagers • Personal Digital Assistants • Electronic Games • Digital Cameras • Camcorders • Handheld Instruments • White LED Torch Light THIN SOT23−5 SN SUFFIX CASE 483 1 5 PIN CONNECTIONS AND MARKING DIAGRAM 1 3 GND CE 2 OUT NC 4 LX 5 (Top View) xxx = Marking Y = Year W = Work Week See detailed ordering and shipping information in the ordering information section on page 2 of this data sheet. ORDERING INFORMATION http://onsemi.com 1 3 GND CE 2 OUT NC 4 LX 5 VOUT VIN Figure 1. Typical Step−Up Converter Application |
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