FAN2013 Datasheet, PDF (1/9 Pages) Fairchild Semiconductor – 2A Low-Voltage Current-Mode Synchronous PWM Buck Regulator

FAN2013
2A Low-Voltage Current-Mode Synchronous
PWM Buck Regulator
November 2006
Features
■ 95% Efficiency, Synchronous Operation
■ Adjustable Output Voltage from 0.8V to V_IN
■ 4.5V to 5.5V Input Voltage Range
■ Up to 2A Output Current
■ Fixed-Frequency 1.3MHz PWM Operation
■ 100% Duty Cycle, Low-Dropout 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 FAN2013 is a high-efficiency, low-noise synchro-
nous 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 volt-
age is adjustable over a wide range of 0.8V to V_IN by
means of an external voltage divider.
The FAN2013 is enabled when the input voltage on the
V_IN pin exceeds the UVLO threshold.
A current-mode control loop with a fast transient
response ensures excellent line and load regulation. The
fixed 1.3MHz switching frequency enables designers to
choose a small, inexpensive external inductor and
capacitor. Filtering can be accomplished with small com-
ponents, reducing space and cost.
Protection features include input under-voltage lockout,
short-circuit protection, and thermal shutdown. Soft-start
limits in-rush current during start-up conditions.
The device is available in a 3x3mm 6-lead MLP.
Typical Application
+5V
PG
6
V_{IN 5}
PV_{IN 4}
10µF
P1
(AGND)
1 ^FB
10K
PGND
R2
2
SW L1
3
2.2µH
R1
V_OUT
40µF
Figure 1. Typical Application
Ordering Information
Part Number
FAN2013MPX
Output Voltage
0.8V - V_IN
Pb-Free
Yes
Package Type
MLP-6 3x3mm
Packing Method
Tape and Reel
© 2006 Fairchild Semiconductor Corporation
FAN2013 Rev. 1.0.0
www.fairchildsemi.com