APW7322A Ver la hoja de datos (PDF) - Anpec Electronics
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APW7322A Datasheet PDF : 22 Pages
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APW7322/A
Pin Description
Pin
NO.
SOP-8 TDFN3x3-10
Name
Function
Signal Input. VCC supplies the control circuitry, gate drivers. Connecting a ceramic bypass
1
7
VCC capacitor from VCC to GND to eliminate switching noise and voltage ripple on the input to
the IC.
Power Good Output. This pin is open-drain logic output that is
2
8
POK pulled to ground when the output voltage is not within ±12.5% of regulation point. The
POK pin, if used, needs an external pull high resistor in the range of 30kΩ~100kΩ.
3
9
GND Ground. Power and signal ground.
Output Feedback Input. The APW7322/A senses the feedback voltage via FB and
4
10
FB
regulates the voltage at 0.8V. Connecting FB with a resistor-divider from the converter’s
output sets the output voltage.
Enable Input. EN is a digital input that turns the regulator on or off. Driving the EN high
5
1
EN
turns on the regulator, otherwise, driving it low turns it off. The EN pin is internally pulled
high via a 300kΩ resistor.
6
2, 3
PGND Power Ground.
7
4,5
LX
Power Switching Output. LX is the Junction of the high-side and low-side Power
MOSFETs to supply power to the output LC filter.
8
6
VIN
Power Input. VIN supplies the step-down converter switches.
9
11
Exposed Pad Exposed pad. Connect the exposed pad to the system ground plan with large copper area
for dissipating heat into the ambient air.
Copyright © ANPEC Electronics Corp.
5
Rev. A.6 - Aug., 2013
www.anpec.com.tw
Free Datasheet http://www.datasheetlist.com/
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