Datasheet

November 2012
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN2106 • Rev. 1.1.2
FAN2106 — TinyBuck™ 3-24V Input, 6A, High-Efficiency, Integrated Synchronous Buck Regulator
FAN2106 — TinyBuck™
3-24 V Input, 6 A, High-Efficiency,
Integrated Synchronous Buck Regulator
Features
 6 A Output Current
 Wide Input Range: 3 V - 24 V
 Output Voltage Range: 0.8 V to 80% V
IN
 Over 95% Peak Efficiency
 1% Reference Accuracy Over Temperature
 Programmable Frequency Operation: 200 KHz to
600 KHz
 Fully Synchronous Operation with Integrated
Schottky Diode on Low-Side MOSFET Boosts
Efficiency
 Internal Bootstrap Diode
 Internal Soft-Start
 Power-Good Signal
 Starts on Pre-Biased Outputs
 Accepts Ceramic Capacitors on Output
 External Compensation for Flexible Design
 Programmable Current Limit
 Under-Voltage, Over-Voltage, and Thermal
Protections
 5x6 mm, 25-Pin, 3-Pad MLP Package
Applications

Servers & Telecom
 Graphics Cards & Displays
 Computing Systems
 Point-of-Load Regulation
 Set-Top Boxes & Game Consoles
Description
The FAN2106 TinyBuck™ is a highly efficient, small-
footprint, constant-frequency, 6 A, integrated
synchronous buck regulator.
The FAN2106 contains both synchronous MOSFETs
and a controller/driver with optimized interconnects in
one package, which enables designers to solve high-
current requirements in a small area with minimal
external components. Integration helps to minimize
critical inductances, making component layout simpler
and more efficient compared to discrete solutions.
The FAN2106 provides for external loop
compensation, programmable switching frequency,
and current limit. These features allow design
flexibility and optimization. High-frequency operation
allows for all-ceramic solutions.
The summing current-mode modulator uses lossless
current sensing for current feedback and over-current
protection. Voltage feedforward helps operation over a
wide input voltage range.
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, over-current, and
thermal shutdown protections help protect the device
from damage during fault conditions. FAN2106
prevents pre-biased output discharge during startup in
point-of-load applications.
Related Resources
 AN-8022 — TinyCalc™ Calculator User Guide
 TinyCalc™ Calculator Design Tool
Ordering Information
Part Number
Operating
Temperature Range
Package Packing Method
FAN2106MPX -10°C to 85°C Molded Leadless Package (MLP) 5x6 mm Tape and Reel
FAN2106EMPX -40°C to 85°C Molded Leadless Package (MLP) 5x6 mm Tape and Reel