The NCP1450A series is a PWM step-up DC-DC switching controller designed for powering portable equipment from one or two cell battery packs.
It features a driver pin for connecting to an external transistor, allowing for large output currents.
The device automatically skips switching cycles under light load conditions to maintain high efficiency.
With only six external components, it provides a simple means to implement a highly efficient converter for large output current applications.
The device consists of an on-chip Pulse Width Modulation (PWM) oscillator, PWM controller, phase-compensated error amplifier, soft-start, voltage reference, and driver for driving an external power transistor.
It also has a chip enable feature to power down the converter for extended battery life.
The NCP1450A series is available in the TSOP-5 package with five standard regulated output voltages, and additional voltages can be manufactured.
It is suitable for applications such as personal digital assistants, electronic games, portable audio, digital still cameras, and handheld instruments.
The device has high efficiency, low startup voltage, low conversion ripple, high output current, and fixed frequency PWM at 180 kHz.
It is available in Pb-Free packages and has various ordering options for different output voltages.
The device also has maximum ratings, electrical characteristics, and pin function descriptions provided in the datasheet.