MAX8643 데이터 시트보기 (PDF) - Maxim Integrated
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MAX8643 Datasheet PDF : 16 Pages
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3A, 2MHz Step-Down Regulator
with Integrated Switches
VDD
Block Diagram
MAX8643
SHUTDOWN
UVLO
EN
CONTROL
CIRCUITRY
BIAS
GENERATOR
VOLTAGE
REFERENCE
CURRENT-LIMIT
COMPARATOR
LX
ILIM THRESHOLD
BST
IN
BST CAPACITOR
CHARGING SWITCH
SS
REFIN
OUT
FB
CTL1
CTL2
COMP
SOFT-START
THERMAL
SHUTDOWN
CONTROL
LOGIC
IN
ERROR
8kΩ
AMPLIFIER
PWM
COMPARATOR
VID
VOLTAGE-
CONTROL
CIRCUITRY
1VP-P
OSCILLATOR
COMP LOW
DETECTOR
FB
0.9 x VREFIN
SHDN
LX
PGND
FREQ
PWRGD
GND
8 _______________________________________________________________________________________
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