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U6083B Datasheet

  • U6083B

  • PWM Power Control with Interference Suppression

  • 8頁(yè)

  • TEMIC

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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鈥搗oltage and reverse V
S
D
Interference and damage protection according to
VDE 0839 and ISO/TR 7637/1.
D
Duty cycle 18 to 100% continuously
D
Internally reduced pulse slope of lamp鈥檚 voltage
D
Charge pump noise suppressed
D
Ground wire breakage protection
Ordering Information
Extended Type Number
U6083B
Package
DIP8
Remarks
Block Diagram
V
S
1
5
Current monitoring
+ short circuit detection
6
C
5
R
sh
V
Batt
C
1
47 k
W
C
2
4
RC oscillator
PWM
Logic
Control input
Charge
pump
7
C
3
47 nF
8
3
Output
Duty cycle
range
18 ... 100%
Duty cycle
reduction
GND
2
Voltage
monitoring
Slew rate
control
95 9753
150
W
R
3
Ground
Figure 1. Block diagram with external circuit
TELEFUNKEN Semiconductors
Rev. A1, 14-Feb-97
1 (8)

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