The SGM61231 is a current mode controlled synchronous Buck converter with 4.5V to 28V input range and 3A rated output current. The quiescent current is 190μA (TYP) and the shutdown supply current is 1.2μA (TYP). Two MOSFETs with low RDSON are integrated to improve the efficiency. Efficiency is maximized through power-save mode (PSM) at light loads. The SGM61231 has adjustable soft-start time for flexible application.
The UVLO level can be adjusted (increased) by an external resistor divider. Secure operation in overload conditions is ensured by cycle-by-cycle current limit, hiccup protection and thermal shutdown protection. The low-side MOSFET has sinking current limit to prevent excessive reverse current.
The SGM61231 is available in a Green SOIC-8 (Exposed Pad) package.
- 4.5V to 28V Input Voltage Range
- 0.8V Internal Voltage Reference
- Typical 190μA Quiescent Current
- Typical 1.2μA Shutdown Current
- Integrated 125mΩ and 85mΩ MOSFETs Support up to 3A Continuous Output Current
- Adjustable Soft-Start
- Fixed 770kHz Frequency
- High Light-Load Efficiency
- Hiccup Mode Over-Current Protection
- Over-Voltage Protection
- Thermal Shutdown Protection
- Available in Green SOIC-8 (Exposed Pad) Package
Industrial Power Supplies
Distributed Power Bus Supplies
LCD Display
CPE Equipment
Set-Top Displays
Battery Chargers
