U6083B Datasheet, PDF (1/8 Pages) TEMIC Semiconductors – PWM Power Control with Interference Suppression

U6083B
PWM Power Control with Interference Suppression
Description
The U6083B is a PWM IC in bipolar technology for the
control of an N-channel power MOSFET used as a high
side switch. The IC is ideal for use in the brightness con-
trol (dimming) of lamps e.g., in dashboard applications.
Features
D Pulse-width modulation up to 2 kHz clock frequency
D Protection against short circuit, load dump
over–voltage and reverse V_S
D Duty cycle 18 to 100% continuously
D Internally reduced pulse slope of lamp’s voltage
D Interference and damage protection according to
VDE 0839 and ISO/TR 7637/1.
D Charge pump noise suppressed
D Ground wire breakage protection
Ordering Information
Extended Type Number
U6083B
Package
DIP8
Remarks
Block Diagram
V_S
1
C₅
5
Current monitoring
+ short circuit detection
R_sh
6
C₁
RC oscillator
4
47 kW
Control input
C₂
3
PWM
Logic
Charge ⁷
pump
Output ⁸
Duty cycle
range
18 ... 100%
Duty cycle
reduction
Voltage
monitoring
GND ₂
Slew rate
control
95 9753
150 W ^R3
Ground
Figure 1. Block diagram with external circuit
V_Batt
C₃
47 nF
TELEFUNKEN Semiconductors
1 (8)
Rev. A1, 14-Feb-97