GENERAL DEscriptION
The SGM61432 is a current mode controlled non-synchronous Buck converter with 4V to 40V input range and 3.5A continuous output current. A low RDSON N-MOSFET is integrated as high-side switch. Moreover, the low 38μA quiescent current and low shutdown current of only 1.3μA (TYP) make it a suitable choice for battery-powered applications. Also, the internal loop compensation simplifies compensation network design and saves user design time and cost. The UVLO level can be adjusted (increased) by an external resistor divider. Switching frequency can be selected over a wide range (200kHz 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 SGM61432 is available in a Green SOIC-8 (Exposed Pad) package.
FEATURES
4V to 40V Input Voltage Range
0.8V to 28V Adjustable Output Voltage Range
Peak Current Mode Control
Integrated 93mΩ High-side MOSFET Supports up to 3.5A Continuous Output Current
Adjustable Switching Frequency from 200kHz to 2500kHz
Ultra-Low Quiescent Current: 38μA (TYP)
Low Shutdown Current: 1.3μA (TYP)
Power-Save Mode for High Light Load Efficiency
External Soft-Start
Frequency Synchronization to External Clock
Programmable UVLO Threshold
Output Over-Voltage Protection
Cycle-by-Cycle Current Limit
Frequency Fold-Back Protection
Thermal Shutdown Protection
Available in a Green SOIC-8 (Exposed Pad) Package
APPLICATIONS
Automotive Battery Regulation
Industrial Power Supplies
Telecom and Datacom Systems
Battery Powered System