Fairchild Fan21SV06 Data Handbook

21S 06 — in y B ck™ 6A , 24V in le-In t In teg rated yn ch ro s B ck R eg lato r, S yn ch ro izatio ap ab ility

September 2011

FAN21SV06 — Tiny Buck™ 6A, 24V Single-Input Integrated Synchronous Buck Regulator with Synchronization Capability Features Description  Single-Supply Operation with 6A Output Current The FAN210SV06 Tiny Buck TM is a highly efficient,

small-footprint, programmable-frequency, 6A integrated

 Over 94% Efficiency

synchronous buck regulator.

 Fully Synchronous Operation with Integrated

FAN21SV06 contains both synchronous MOSFETs and

Schottky Diode on Low-Side MOSFET Boosts

a controller/driver with optimized interconnects in one

Efficiency

package, which enables designers to solve high-current

 Single Supply Device for VIN > 6.5V – 24V requirements in a small area with minimal external

components, thereby saving cost. On-board internal 5V

 Programmable Frequency Operation (200-600KHz)

regulator enables single-supply operation for input

 Externally Synchronizable Clock with Master/Slave voltages >6.5V. Provisions

The FAN21SV06 can be configured to drive multiple

 Wide Input Range with Dual Supply: 3.0V to 24V slave devices OR synchronize to an external system

clock. In slave mode, FAN21SV06 may be set up to be

 Output Voltage Range: 0.8V to 80%VIN

free-running in the absence of a master clock signal.

 Power-Good Signal

External compensation, programmable switching

 Accepts Ceramic Capacitors on Output frequency, and current-limit features allow for design

optimization and flexibility. High-frequency operation

 External Compensation for Flexible Design

allows for all ceramic solutions.

 Starts Up on Pre-Bias Outputs

Fairchild’s advanced Bi CMOS power process combined

 Integrated Bootstrap Diode with low-RDS(ON) internal MOSFETs and a thermally

efficient MLP package provide the ability to dissipate

 Programmable Over-Current Protection

high power in a small package. Integration helps to

 Under-Voltage, Over-Voltage, and Thermal- minimize critical inductances making layout simpler and Shutdown Protections more efficient compared to discrete solutions.  5x6mm, 25-pin, 3-pad MLP Output over-voltage, under-voltage, over-current and

thermal-shutdown protections help protect the device Applications from damage during fault conditions. FAN21SV06 prevents pre-biased output discharge during startup in

 Servers & Telecom point-of-load applications.  Graphics Cards & Displays

Related Resources

 High-End Computing Systems

 Tiny Calc™ Calculator Design Tool

 Set-Top Boxes & Game Consoles

 AN-6033 — FAN21SV06 Design Guide

 Point-of-Load Regulation  AN-8022 — Tiny Calc™ Calculator

Ordering Information

Operating Packing

Part Number Temperature Range Package Method FAN21SV06MPX -10°C to 85°C Molded Leadless Package (MLP) 5x6mm Tape and Reel FAN21SV06EMPX -40°C to 85°C Molded Leadless Package (MLP) 5x6mm Tape and Reel

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN21SV06 Rev. 1.0.1