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U6084B Datasheet(Arkusz danych) 1 Page - TEMIC Semiconductors

Numer części U6084B
Szczegółowy opis  PWM Power Control with Automatic Duty Cycle Reduction
Pobierz  8 Pages
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Producent  TEMIC [TEMIC Semiconductors]
Strona internetowa  http://www.temic.de
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U6084B
TELEFUNKEN Semiconductors
Rev. A1, 14-Feb-97
1 (8)
PWM Power Control with Automatic Duty Cycle Reduction
Description
The U6084B is a bipolar technology PWM-IC designed
for the control of an N-channel power MOSFET used as
a high-side switch. The IC is ideal for use in the brightness
control (dimming) of lamps such as, in dashboard
applications. For a constant brightness the preselected
duty cycle can be reduced automatically as a function of
the supply voltage.
Features
D Pulse width modulation up to 2 kHz clock frequency
D Protection
against
short
circuit,
load-dump
overvoltage and reverse VS
D Duty cycle 0 to 100 % continuously
D Output stage for power MOSFET
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
Package
Remarks
U6084B–FP
SO16
Block Diagram
Current monitoring
+ short circuit detection
Output
Charge
pump
RC oscillator
Duty cycle
range
0–100%
Duty cycle
reduction
Control input
Short circuit
latch monitoring
Voltage
monitoring
Enable/
disable
9
11
16
6
3
VS
4
C5
PWM
Logic
C2
C1
12
13
14
C3
47 nF
Rsh
1
R3
150
W
2
95 9751
C6
VBatt
5
47 k
W
Ground
Figure 1. Block diagram with external circuit




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