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UC3550

Part Number	UC3550
Manufacturer	UTC
Description	PWM/PFM SWITCHABLE STEP-UP DC-DC CONTROLLER
Published	Apr 13, 2007
Detailed Description	UNISONIC TECHNOLOGIES CO., LTD UC3550 PWM CONTROLLED, PWM/PFM SWITCHABLE STEP-UP DC-DC CONTROLLER DESCRIPTION The UTC...
Datasheet	UC3550 PDF File

Overview

UNISONIC TECHNOLOGIES CO.
, LTD UC3550 PWM CONTROLLED, PWM/PFM SWITCHABLE STEP-UP DC-DC CONTROLLER DESCRIPTION The UTC UC3550 series is a compact, high efficiency, step-up DC/DC controllers includes an error amplifier, oscillator, PWM comparator, skip cycle comparator, 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 larg...

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