FAN53611UC123X View Datasheet(PDF) -

Pin Configurations

Figure 2. Bumps Facing Down

Figure 3. Bumps Facing Up

Pin Definitions

Pin #

A1

B1

C1

C2

B2

A2

Name

Description

MODE

SW

FB

GND

EN

VIN

MODE. Logic 1 on this pin forces the IC to stay in PWM Mode. A logic 0 allows the IC to

automatically switch to PFM during light loads. The regulator also synchronizes its switching

frequency to four times the frequency provided on this pin. Do not leave this pin floating.

Switching Node. Connect to output inductor.

Feedback / VOUT. Connect to output voltage.

Ground. Power and IC ground. All signals are referenced to this pin.

Enable. The device is in Shutdown Mode when voltage to this pin is < 0.4 V and enabled when

> 1.2 V. Do not leave this pin floating.

Input Voltage. Connect to input power source.

© 2010 Fairchild Semiconductor Corporation

FAN53601 / FAN53611 • Rev. 1.0.1

2

www.fairchildsemi.com

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