APW7178A データシートの表示（PDF） - Anpec Electronics
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APW7178A Datasheet PDF : 16 Pages
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APW7178A
Pin Description
PIN
NO.
NAME
1
NC
2
RUN
3
VIN
4
SW
5
GND
6
FB
FUNCTION
No Internal Connection.
Enable Control Input. Forcing this pin above 1.0V enables the device. Forcing this pin below 0.4V shuts it
down. In shutdown, all functions are disabled to decrease the supply current below 0.5µA. Do not leave
RUN pin floating.
Device and Converter Supply Pin. Must be closely decoupled to GND with a 4.7µF or greater ceramic
capacitor.
Switch Node Connected to Inductor. This pin connects to the drains of the internal main and synchronous
power MOSFETs switches.
Power and Signal Ground.
The feedback voltage is decided by an external resistive divider across the output.
Block Diagram
RUN
Shutdown
Control
Over-
Temperature
Protection
Slope
Compensation
Logic Control
Current
-Limit
∑
Current
Sense
Amplifier
Gate
Driver
Oscillator
ICMP
COMP
Error
Amplifier
EAMP
Soft-
Start
VREF
0.6V
VIN
SW
GND
FB
Copyright © ANPEC Electronics Corp.
7
Rev. A.1 - Sep., 2012
www.anpec.com.tw
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