UC3845G-D08-T 查看數據表（PDF） - Unisonic Technologies

零件编号

产品描述 (功能)

生产厂家

UC3845G-D08-T

HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS

Unisonic Technologies 

UC3844/45

„ PIN CONFIGURATION

LINEAR INTEGRATED CIRCUIT

„ PIN DESCRIPTION

PIN NO

1

2

3

4

5

6

7

8

PIN NAME

Compensation

VFB

ISENSE

RT/CT

GND

Output

VCC

VREF

FUNCTION

Error amplifier output, this pin is made available for loop compensation.

Voltage Feedback, the inverting input of the Error Amplifier. It is normally connected to the

switching power supply output through a resistor divider.

A voltage proportional to inductor current is connected to this input. The PWM uses this

information to terminate the output switch conduction.

The Oscillator frequency and maximum output duty cycle are programmed by connecting

resistor RT to Vref and capacitor CT to ground. Operation to 1 MHz is possible.

Power ground.

This output directly drives the gate of a power MOSFET. Peak currents up to 1A are

sourced and sunk by this pin. The output switches at one-half the oscillator frequency.

Positive supply.

Reference output, provides charging current for capacitor CT though resistor RT.

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

2 of 7

QW-R103-010.D

Share Link: