The SGM61431 is an internally compensated, synchronous Buck converter with a wide 4.5V to 36V input voltage range and 3A output current capability. The device can be easily used in various industrial applications powered from unregulated sources. Easy compensation and cycle-by-cycle current limit are obtained by peak current mode control. With ultra-low 0.6μA (TYP) shutdown current, it is well suited for battery powered systems to prolong battery life. Internal compensation allows quick and low component count design.
The SGM61431 can operate at fixed frequency with moderate or heavy load condition. In light load condition, the SGM61431 works in the forced pulse width modulation (FPWM) mode to achieve low output ripple and good regulation.
The EN/SYNC employs an enable divider to establish a precision threshold that simplifies UVLO adjustment, device on/off control and power sequencing. Thermal shutdown and output short-circuit protection (hiccup mode) are also provided.
The SGM61431 is available in a Green SOIC-8 (Exposed Pad) package and can operate over -40℃ to +125℃ ambient temperature range.
- Wide 4.5V to 36V Input Voltage Range
- Up to 3A Continuous Output Current
- 0.8V to 24V Output Voltage Range
- FPWM at Light Load Condition
- 390kHz Switching Frequency (Normal Operation)
- SYNC Input for External Switching Clock
- Integrated RDSON Switches: 115mΩ/90mΩ (TYP)
- High Efficiency at Light Load Condition
- Ultra-Low Shutdown Current: 0.6μA (TYP)
- Peak Current Mode Control
- Precision Enable Threshold with UVLO Setting
- Cycle-by-Cycle Current Limit
- 1.5ms (TYP) Internal Soft-Start Time
- -40℃ to +125℃ Operating Temperature Range
- Available in a Green SOIC-8 (Exposed Pad) Package
Industrial Power Supplies
Telecom and Datacom Systems
General Purpose Wide VIN Regulation
