FAN2103_12 Datasheet, PDF (1/14 Pages) Fairchild Semiconductor – 3 A, 24 V Input, Integrated Synchronous Buck Regulator

November 2012
FAN2103 — TinyBuck™
3 A, 24 V Input, Integrated Synchronous Buck
Regulator
Features
 3 A Output Current
 Over 95% Efficiency
 Fully Synchronous Operation with Integrated
Schottky Diode on Low-side MOSFET Boosts
Efficiency
 Programmable Frequency Operation (200 KHz to
600 KHz)
 Power-good Signal
 Accepts Ceramic Capacitors on Output
 External Compensation for Flexible Design
 Wide Input Range: 3 V to 24 V
 Output Voltage Range: 0.8 V to 90%V_IN
 Input Under-Voltage Lockout
 Programmable Over-Current Limit
 Under-Voltage, Over-Voltage, and
Thermal Protections
 5x6 mm, 25-pin, 3-Pad MLP
Applications
 Graphics Cards
 Battery-powered Equipment
 Set-top Boxes
 Point-of-load Regulation
 Servers
Description
The FAN2103 TinyBuck™ is an easy-to-use, cost- and
space-efficient, 3 A synchronous buck solution. It
enables designers to solve high current requirements in
a small area with minimal external components.
External compensation, programmable switching
frequency, and current limit features allow for design
optimization and flexibility.
The summing current mode modulator uses lossless
current sensing for current feedback and over-current,
and includes voltage feedforward.
Fairchild’s advanced BiCMOS power process, combined
with low R_DS(ON) internal MOSFETs and a thermally
efficient MLP package provide the ability to dissipate
high power in a small package.
Output over-voltage, under-voltage, and thermal
shutdown protections plus power-good, help protect the
devices from damage during fault conditions.
Related Application Notes
 TinyCalc™ Design Tool
 AN-6033 — TinyCalc™ Design Tool Guide
 AN-5067 – PCB Land Pattern Design and Surface
Mount Guidelines for MLP Packages
Ordering Information
Part Number
FAN2103MPX
FAN2103EMPX
Operating
Temperature Range
Package
-10°C to 85°C
25-Pin Molded Leadless Package (MLP) 5x6 mm
-40°C to 85°C
25-Pin Molded Leadless Package (MLP) 5x6 mm
Packing Method
Tape and Reel
Tape and Reel
© 2007 Fairchild Semiconductor Corporation
FAN2103 • Rev. 1.0.8
www.fairchildsemi.com