Datasheet4U Logo Datasheet4U.com

UC3551 Datasheet Advanced Pwm Step-up DC-dc Converter

Manufacturer: Unisonic Technologies

Overview: UNISONIC TECHNOLOGIES CO., LTD UC3551 Preliminary ADVANCED PWM STEP-UP DC-DC CONVERTER CMOS IC.

General Description

The UTC UC3551 is a step-up DC/DC converter with high efficiency and low start-up voltage.

It is operaded in stable waveforms without external pensate.

This device incorporates an adaptive current mode PWM control loop in which an error amplifier, ramp generator, parator, switch pass element and driver are included.

Key Features

  • Low Start-up Input Voltage is as Low as 1.0V.
  • Efficiency up to 90%.
  • High Supply Capability to Deliver 3.3V 100mA with 1 Alkaline Cell.
  • Quiescent (Switch-off) Supply Current: 17µA.
  • Zero Shutdown Mode Supply Current.
  • Fixed Switching Frequency: 450KHz.
  • Both Internal and External Power Switches for Maximum Flexibility.

More Datasheets from Unisonic Technologies

Part Number Description
UC3552 PWM DC-DC CONVERTER
UC33063A DC TO DC CONVERTER CONTROLLER
UC3380 PWM STEP UP DC-DC CONTROLLER
UC3383 STEP-UP DC/DC CONVERTERS
UC3800 LOW COST POWER-SAVING MODE PWM CONTROLLER
UC3842G HIGH PERFORMANCE CURRENT MODE CONTROLLER
UC3854 ENHANCED HIGH POWER FACTOR PREREGULATOR

UC3551 Distributor