UC3550 Datasheet | Unisonic Technologies

UNISONIC TECHNOLOGIES CO., LTD UC3550 PWM CONTROLLED, PWM/PFM SWITCHABLE STEP-UP DC-DC CONTROLLER - DESCRIPTION The UTC UC3550 series is a pact, high efficiency, step-up DC/DC controllers includes an error amplifier, oscillator, PWM parator, skip cycle parator, voltage reference, soft-start, and high speed lower ON-resistance driver for driving external power devices (NMOS or NPN) ,Additionally, a CE (chip enable) function that reduces power consumption during shut-down mode. That typically operated from a single-or dual-cell battery packs. It have a driver pin ,ext pin, for connecting to an external transistor(NMOS or NPN). a lower ON-resistance external transistor can obtain...