AME5286 Datasheet, PDF (3/20 Pages) Analog Microelectronics – Rectified Step-Down Converter

AME
AME5286
n Pin Description
3A, 300KHz ~ 2MHz Synchronous
Rectified Step-Down Converter
Pin No.
1
2
3
4
5
6
7
8
9
Pin Name
COMP
SS
Pin Description
Compensation Node. COMP is used to compensate the regulation control loop.
Connect a series RC network from COMP to GND to compensate the regulation
control loop. In some cases, an additional capacitor from COMP to GND is
required.
Soft-Start function. Connect a capacitor from SS to GND to set the soft-start
period.
EN
Enable. Pull EN below 0.6V to shut down the regulator.
IN
SW
FREQ
FB
PG
GND
Power Input. IN supplies the power to the IC, as well as the step-down converter
switches. Bypass IN to GND with a suitable large capacitor to eliminate noise on
the input to the IC.
Power Switching Output. SW is the switching node that supplies power to the
output. Connect the output LC filter from SW to the output load.
Frequency Adjust Pin. Add a resistor from this pin to ground determines the
switching frequency.
Feedback Input. FB senses the output voltage to regulate that voltage. Drive FB
with a resistive voltage divider from the output voltage. The feedback reference
voltage is 0.8V.
Power-Good output.
This open-drain output is low when output is out of regulation.
Ground. Connect the exposed pad to GND.
Rev. A.02
3