U6081B Datasheet, PDF (1/8 Pages) TEMIC Semiconductors – PWM Power Control with Low Duty Cycle Switch Off

U6081B
PWM Power Control with Low Duty Cycle Switch Off
Description
U6081B 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 the use in the brightness
control (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 overvol-
tage and reverse V_S
D Duty cycle 0 to 100%
D Output stage for power MOSFET
D Interference and damage protection according to
VDE 0839 and ISO/TR 7637/1.
D Ground wire breakage protection
D Charge pump noise suppressed
Ordering Information
Extended Type Number
U6081B
Package
DIP8
Remarks
Block Diagram
V_S
1
RC oscillator
C₁
4
47 kW
Control input
C₂
3
Duty cycle
range
0/13 to 100 %
C₅
5
Current monitoring
6
+ short circuit detection
PWM
Logic
Charge ⁷
pump
Output ⁸
Voltage
monitoring
2
95 9752
V_Batt
R_sh
C₃
47 nF
150 W ^R3
Ground
Figure 1. Block diagram with external circuit
TELEFUNKEN Semiconductors
1 (8)
Rev. A1, 14-Feb-97