UC2845 Datasheet HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS

Manufacturer: Unisonic Technologies

UC2845 high performance current mode pwm controllers by Unisonic Technologies - Datasheet Preview

Datasheet Details

Part number	UC2845
Manufacturer	Unisonic Technologies
File Size	285.95 KB
Description	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
Datasheet	UC2845 Datasheet

General Description

The UTC UC2844/2845 are high performance fixed frequency current mode controllers that specifically designed for Off-Line and DC to DC converter applications with minimal external parts count.

The differences between UC2844 and UC2845 are the maximum duty cycle ranges and under-voltage lockout thresholds.

The UC2844 ideally suited to off-line applications with UVLO thresholds of 16V(ON) and 10V(OFF), and UC2845 has UVLO thresholds of 8.5V(ON) and 7.6V(OFF) for lower voltage applications.

Overview

UNISONIC TECHNOLOGIES CO., LTD UC2844/45 LINEAR INTEGRATED CIRCUIT HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS.

Key Features

S.
Operation output switching frequency up to 500 kHz.
Output deadtime adjustable from 50% to 70%.
Automatic feed forward compensation.
Latching PWM for cycle-by-cycle current limiting.
High current totem pole output.
Internally trimmed reference with under voltage lockout.
UVLO with hysteresis.
Low startup and operating current.

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