© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN53600 / FAN53610 • Rev. 1.4 2
FAN53600 / FAN53610 — 3 MHz, 600 mA / 1 A Synchronous Buck Regulator
Pin Configurations
C1
B1
A1
C2
B2
A2
MODE
SW
FB
VIN
EN
GND
C1
B1
A1
C2
B2
A2
MODE
SW
FB
VIN
EN
GND
Figure 2. Bumps Facing Down
Figure 3. Bumps Facing Up
Pin Definitions
MODE. Logic 1 on this pin forces the IC to stay in PWM Mode. Logic 0 allows the IC to automatically
switch to PFM Mode during light loads. The regulator also synchronizes its switching frequency to
two times the frequency provided on this pin. Do not leave this pin floating.
Switching Node. Connect to output inductor.
Feedback. 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.
