FAN21SV04 Series

- 4A, 24V Single-Input Integrated Synchronous Buck Regulator

Catalog

- 4A, 24V Single-Input Integrated Synchronous Buck Regulator

Part	Mounting Type	Current - Output	Output Type	Voltage - Output (Max) [Max]	Synchronous Rectifier	Function	Operating Temperature [Max]	Operating Temperature [Min]	Number of Outputs	Output Configuration	Package / Case	Topology	Voltage - Output (Min/Fixed)	Voltage - Input (Max) [Max]	Frequency - Switching [Min]	Frequency - Switching [Max]	Voltage - Input (Min) [Min]
ON Semiconductor FAN21SV04EMPX	Surface Mount	4 A	Adjustable	19.2 V		Step-Down	85 °C	-40 °C	1	Positive	25-WQFN Exposed Pad	Buck	0.8 V	24 V	200 kHz	600 kHz	3 V

Catalog

- 4A, 24V Single-Input Integrated Synchronous Buck Regulator

Key Features

• Single-Supply Operation with 4A Output Current

• Wide Input Range with Dual Supply: 3.0V to 24V

• Wide Output Voltage Range: 0.8V 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> 6.5V - 24V

• Programmable Frequency Operation (200-600KHz)

• 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

• 5x6mm, 25-Pin, 3-Pad MLP Package

• Under-Voltage, Over-Voltage, and Thermal-Shutdown Protections

Description

The FAN21SV04 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 high-current requirements in a small area with minimal external components, thereby reducing cost. On-board 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.ON Semiconductor’s 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.