SG-Micro SGM61450 | Demoboard SGM61450 Demo Board

Description

The SGM61450 is a current mode controlled nonsynchronous Buck converter with 4.5V to 42V input range and 5A continuous output current. A low RDSON N-MOSFET is integrated as high-side switch. The quiescent current is as low as 148μA. The shutdown current drops to 2.75μA during shutdown (EN = low). The internal under-voltage lockout (UVLO) threshold is 4.2V and can be adjusted (increased) by an external resistor divider. An internal soft-start circuit controls the output voltage start-up ramp. Switching frequency can be selected over a wide range (100kHz to 2500kHz) to allow desired tradeoff among efficiency, component sizes and conversion voltage ratio. Protection against over-voltage transient is provided to limit the startup or other transient overshoots. Secure operation in overload conditions is ensured by cycle-by-cycle current limit, frequency fold-back and thermal shutdown protection. The SGM61450 is available in a Green SOIC-8 (Exposed Pad) package

Features

• 4.5V to 42V Input Voltage Range
• 0.8V to 36V Adjustable Output Voltage Range
• Integrated 68mΩ High-side MOSFET Supports up to 5A Continuous Output Current
• Programmable Switching Frequency: 100kHz to 2500kHz
• Low Quiescent Current: 148μA (TYP)
• Low Shutdown Current: 2.75μA (TYP)
• Power-Save Mode for High Light Load Efficiency
• Frequency Synchronization to External Clock
• Programmable UVLO Threshold
• Over-Voltage Transient Protection
• Cycle-by-Cycle Current Limit
• Frequency Fold-Back Protection
• Integrated BOOT Recharge FET for Low Light Load Dropout
• Thermal Shutdown (+176℃)
• Available in a Green SOIC-8 (Exposed Pad) Package

Typical applications

• Battery Chargers, USB Dedicated Charging Ports
• Industrial Power Supplies

More information

• Datasheet
• IC product information