ON Semiconductor NCP1400A Manuals

The NCP1400A is a 100mA, fixed frequency PWM step-up micropower switching regulator 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 0.8V and operate down to less than 0.2V. With only four external components, this series allows a simple means to implement highly efficient converters that are capable of up to 100mA 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 1.8V to 4.9V in 100mV steps can be manufactured.

The NCP1400A series is a micropower step-up DC to DC converter designed specifically for powering portable equipment from one or two cell battery packs. These devices can start up with a voltage of 0.8V and operate down to as low as 0.2V. With only four external components, this series allows for the implementation of highly efficient converters capable of delivering up to 100mA of output current. Each device includes an on-chip fixed frequency oscillator, pulse width modulation controller, phase compensated error amplifier for stable operation in discontinuous mode, soft-start, voltage reference, driver, and power MOSFET switch with current limit protection. Additionally, there is a chip enable feature to power down the converter and extend battery life. The NCP1400A devices are available in the Thin SOT23-5 package with seven standard regulated output voltages. Additional voltages ranging from 1.8V to 4.9V in 100mV steps can be manufactured.