ncp1400asn30升压电源芯片

升压电源芯片ncp1400asn30

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 tsop-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.