onsemi FAN21SV04EMPX

The FAN21SV04 TinyBuck™ is a highly efficient, small-footprint, programmable-frequency, 4 A, 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 5 V regulator enables single-supply operation for input voltages > 6.5 V. 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. Advanced BiCMOS power process, combined with low-RDS(ON) internal MOSFETs and a thermally efficient MLP package, provide the ability to dissipate high power in a small package. Integration helps minimize critical inductances, making layout simpler and more efficient compared to discrete solutions. Output over-voltage, under-voltage, over-current, and thermal-shutdown protections help protect the device from damage during fault conditions. FAN21SV04 prevents pre-biased output discharge during startup in point-of-load applications.

• Single-Supply Operation with 4 A Output Current
• Wide Input Range with Dual Supply: 3.0 V to 24 V
• Wide Output Voltage Range: 0.8 V to 80% VIN
• Over 94% Peak Efficiency
• 1% Reference Accuracy Over Temperature
• Fully Synchronous Operation with Integrated Schottky Diode on Low-Side MOSFET Boosts Efficiency
• Single Supply Device for VIN > 6.5 V - 24 V
• Programmable Frequency Operation (200 - 600 KHz) Synchronizable to External Clock with Master/Slave Provisions
• Power-Good Signal
• Accepts Ceramic Capacitors on Output
• External Compensation for Flexible Design
• Starts on Pre-Bias Outputs
• Integrated Bootstrap Diode
• Programmable Over-Current Protection
• Under-Voltage, Over-Voltage, and ThermalShutdown Protections 5×6 mm, 25-Pin, 3-Pad MLP Package

• Servers & Telecom
• Graphics Cards & Displays
• Computing Systems
• Set-Top Boxes & Game Consoles
• Point-of-Load Regulation