FAN21SV04

FAN21SV04 — TinyBuck™ 4A, 24V Single-Input Integrated Synchronous Buck Regulator August 2009 FAN21SV04 — TinyBuck™ 4A, 24V Single-Input Integrated Synchronous Buck Regulator Features ƒ Single-Supply Operation with 4A Output Current ƒ Wide Input Range with Dual Supply: 3.0V to 24V ƒ Wide Output Voltage Range: 0.8V to 80% VIN ƒ Over 94% Peak Efficiency ƒ 1% Reference Accuracy Over Temperature ƒ Fully Synchronous Operation with Integrated Schottky Diode on Low-Side MOSFET Boosts Efficiency Description The FAN21SV04 TinyBuck™ is a highly efficient, small-footprint, programmable-frequency, 4A, integrated synchronous buck regulator. FAN21SV04 contains both synchronous MOSFETs and a controller/driver with optimized interconnects in one package, which enables designers to solve highcurrent requirements in a small area with minimal external components, thereby reducing cost. Onboard internal 5V regulator enables single-supply operation for input voltages >6.5V. The FAN21SV04 can be configured to drive multiple slave devices OR synchronize to an external system clock. In slave mode, FAN21SV04 may be set up to be free-running in the absence of a master clock signal. External compensation, programmable switching frequency, and current-limit features allow for design optimization and flexibility. High-frequency operation allows for all-ceramic solutions. Fairchild’s advanced BiCMOS power process, combined with low-RDS(ON) internal MOSFETs and a thermally efficient MLP package, provide ...