SG3825CQ Просмотр технического описания (PDF) - Microsemi Corporation
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SG3825CQ Datasheet PDF : 7 Pages
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PRODUCT DATABOOK 1996/1997
SG1825C/SG2825C/SG3825C
HIGH-SPEED CURRENT-MODE PWM
NOT RECOMMENDED FOR NEW DESIGNS
BLOCK DIAGRAM
VREF
+9V
16
+VIN 15
GND 10
CLOCK 4
RT 5
CT 6
RAMP 7
E/A OUTPUT 3
N.I. INPUT 2
INV. INPUT 1
SOFTSTART 8
REFERENCE
REGULATOR
+ 4.0V
OSCILLATOR
1.25V
ERROR
9µA
S
RQ
Q
T
Q
FIGURE INDEX
Application Circuits
FIGURE #
1. HIGH-SPEED LAYOUT AND BYPASSING
2. MICROPOWER STARTUP
3. SOFTSTART FAST RESET
4. OSCILLATOR SYCHRONIZATION
5. OSCILLATOR FUNCTIONAL DIAGRAM
6. VOLTAGE AMPLIFIER CONNECTIONS
7. DRIVING SHIELDED CABLE
13 VC
11 OUTPUT A
14 OUTPUT B
12 POWER GND
+ 1.0V
+ 1.4V
9 ILIM/S.D.
Copyright © 1994
Rev. 1.3a
5
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