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FP6166-0.4-OCT-2012

FP6166

85T

fitipower integrated technology lnc.

Typical Application Circuit

FP6166

VIN

GND

SHDN

VOUT

ADJ

2.2µF

R1

R2

Figure 2. Typical Application Circuit of FP6166

Note 1：To prevent oscillation, it is recommended to use minimum 2.2µF/1µF X7R or X5R dielectric capacitors if ceramics are used as

input/output capacitors.

Functional Pin Description

Pin Name

Pin Function

VIN

Power is supplied to this device from this pin which is required an input filter capacitor.

In general, the input

capacitor in the range of 2.2µ F to 10µ F is sufficient.

VOUT

The output supplies power to loads.

The output capacitor is required to prevent output voltage from oscillation.

The FP6166 is stable with a 1µ F or greater output capacitor.

The larger output capacitor will be required for

application with larger load transients.

The large output capacitor could reduce output noise, improve stability and

PSRR.

ADJ

Voltage Feedback Input Pin.

Connect ADJ and VOUT with a resistive voltage divider.

GND

Common Ground Pin

Pull this pin high to enable IC, and pull this pin low to shutdown IC.

Keeping this pin floating will shut down IC due to

the built-in pull-low resistor.