U2352B データシートの表示（PDF） - Temic Semiconductors

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U2352B

PWM Power Control for DC Loads

Temic Semiconductors 

PWM Power Control for DC Loads

U2352B

Description

The U2352B bipolar circuit is a PWM device for control-

ling logic level Power MOSFETs and IGBTs. It allows

simple power control for dc loads. Integrated load current

monitoring with adjustable switch-off threshold also

gives the option of measuring the load current via the

MOS transistor’s on-state resistance, RDS(on), or via a

shunt resistor.

Special Features

D Pulse width control up to 50 kHz clock frequency

D Load current monitoring via the on-state resistance,

RDS(on), of the FET or via shunt resistor (optional)

D 100 mA push-pull output stage

D Voltage monitoring

D Temperature-compensated supply voltage limitation

D Chip temperature monitoring

Applications

D Battery-operated screwdrivers

D Battery-operated machine tools

D Halogen lamp controllers

D Dimmers

D Electronic fuses

D High-performance clock generators

Package: DIP8, SO8

VS

2xI

S1

1

I

Reference

Chip

voltage

Oscillator

temperature

monitoring

140°C

Voltage

8

limitation 6.8 V

VS

2

–

K1

+

Output stage

logic

Time window

current measurement

QQ

SR

3

–

K2

+

Load current

POR

monitoring

4

S2

7

Push-pull

output stage

6

GND

5

TELEFUNKEN Semiconductors

Rev. A1, 29-May-96

Figure 1. Block diagram

95 9670

1 (8)

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