January 2010
2008 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN2013B Rev. 1.0.1
FAN2013B
—
2A
Low-Voltage,
Current-M
ode
Synchronous
PWM
Buck
Regulator
FAN2013B — 2A Low-Voltage, Current-Mode
Synchronous PWM Buck Regulator
Features
95% Efficiency, Synchronous Operation
Adjustable Output Voltage from 0.8V to 3.6V
4.5V to 5.5V Input Voltage Range
Up to 2A Output Current
Fixed-Frequency 1.2 MHz PWM Operation
Soft-Start Function
Excellent Load Transient Response
Power-Good Flag
Over-Voltage, Under-Voltage Lockout, Short-
Circuit, and Thermal Shutdown Protections
3x3mm 6-Lead MLP Package
Applications
Hard Disk Drive
Set-Top Box
Point-of-Load Power
Notebook Computer
Communications Equipment
Description
The
FAN2013B
is
a
high-efficiency,
low-noise,
synchronous Pulse Width Modulated (PWM) current-
mode DC-DC converter designed for low-voltage
applications. It provides up to 2A continuous-load
current from the 4.5V to 5.5V input. The output voltage
is adjustable over a wide range by means of an external
voltage divider.
The FAN2013B is enabled when the input voltage on
the VIN pin exceeds the UVLO threshold.
A current-mode control loop with a fast transient
response ensures excellent line and load regulation.
The
fixed
1.2MHz
switching
frequency
enables
designers to choose a small, inexpensive external
inductor and capacitor. Filtering can be accomplished
with small components, reducing space and cost.
Protection features include input under-voltage lockout,
short-circuit protection, and thermal shutdown. Soft-
start limits inrush current during start-up conditions.
The device is available in a 3x3mm 6-lead MLP.
Typical Application
Figure 1.
Typical Application
Ordering Information
Part Number
Output Voltage
Package
Eco Status
Packing Method
FAN2013BMPX
0.8V to 3.6V
3x3mm 6-Lead Molded Leadless
Package (MLP)
Green
Tape and Reel
For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.