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SG1844 Datasheet(PDF) 5 Page - Microsemi Corporation

Part No. SG1844
Description  CURRENT MODE PWM CONTROLLER
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Maker  MICROSEMI [Microsemi Corporation]
Homepage  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

SG1844 Datasheet(HTML) 5 Page - Microsemi Corporation

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C URRENT -M ODE PWM C ONTROLLER
SG1844/SG1845 Series
PRODUCT DA T ABOOK 1996/1997
5
Copyright © 2000
Rev. 1.4
4/00
P RODUCTION D ATA S HEET
BLOCK DIAGRAM
* - VCC and VC are internally connected for 8-pin packages.
** - POWER GROUND and GROUND are internally connected for 8-pin packages.
OSCILLATOR
S
R
INTERNAL
BIAS
S / R
5V
REF
PWM
LATCH
CURRENT SENSE
COMPARATOR
1V
R
2R
ERROR AMP
UVLO
34V
GROUND**
V
CC*
R
T/CT
V
FB
T
COMP
CURRENT SENSE
POWER GROUND**
OUTPUT
V
C*
V
REF
5.0V
50mA
16V (1844)
8.4 (1845)
6V (1844)
0.8V (1845)
2.5V
V
REF
GOOD LOGIC


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