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| AMS1302 Datasheet, PDF (6/8 Pages) Advanced Monolithic Systems Ltd – Output up to 24V Internal MOSFET with high switch current up to 3A | |||
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AMS1302
Pin Information
GND (Pin 1): Signal and Power Ground. Provide a short direct PCB path between GND and the (â) side
of the output capacitor(s).
SW (Pin 2): Switch Pin. Connect inductor between SW and VIN. Keep these PCB trace lengths as short
and wide as possible to reduce EMI and voltage overshoot.
SOE (Pin 3): Source of the MOSFET. Connect resistor to GND
FB (Pin 4): Feedback Input to the gm Error Amplifier. Connect resistor divider tap to this pin. The output
voltage can be adjusted from 3.3V to 20V by: VOUT = 1.212V ⢠[1 + (R1/R2)]
VDD (Pin 5): Input positive power pin.
EN (Pin 6): En Control Input. Forcing this pin above 1V enables the part. Forcing this pin below 0.6V
shuts down the device. In shutdown, all functions are disabled, drawing <1µA supply current. Do not
leave EN floating.
Functional Diagram
6
Advanced Monolithic Systems http://www.ams-semitech.com
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