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Номер в каталоге
Компоненты Описание
RT7257 Просмотр технического описания (PDF) - Richtek Technology
Номер в каталоге
Компоненты Описание
производитель
RT7257
3A, 18V, 1.2MHz Synchronous Step-Down Converter
Richtek Technology
RT7257 Datasheet PDF : 14 Pages
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Function Block Diagram
RT7257B
VIN
Internal
Regulator
Oscillator
Shutdown
Comparator
V
A
V
CC
1.2V +
Foldback
Control
-
0.4V +
Lockout
5k
Ω
Comparator
EN
-
-
UV
Comparator
2.5V
+
V
CC
6µA
0.8V +
SS
-+EA
Current Sense
Slope Comp
Amplifier
+
-
V
A
R
SENSE
SQ
+
-
RQ
Current
Comparator
110m
Ω
90m
Ω
BOOT
SW
GND
FB
COMP
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
DS7257B-03 September 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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