UC3550 - PWM/PFM SWITCHABLE STEP-UP DC-DC CONTROLLER

Product Overview

UTC

UC3550 PWM/PFM SWITCHABLE STEP-UP DC-DC CONTROLLER by UTC - Datasheet Preview — Datasheet preview – UC3550

Datasheet Details

Part number	UC3550
Manufacturer	UTC
File Size	381.32 KB
Description	PWM/PFM SWITCHABLE STEP-UP DC-DC CONTROLLER
Datasheet	UC3550 Datasheet
Additional preview pages of the UC3550 datasheet.

Product details

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.

Features

S.
Input Voltage Range：0.9~8V.
Output Voltage Range：1.8~6V Programmable in 0.1V with High Accuracy ± 2.5%.
High Efficiency 88% (Typ. ).
Low Start-up Voltage of 0.9V Typical at IOUT = 1.0mA.
Oscillator Frequency: 300kHz. (±20%).
Chip Enable Pin with Pull-up Current Source.
High Output Current up to 1000mA (VIN = 2.0V, VOUT =3.3V).

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Published: Apr 13, 2007 |