This datasheet introduces LT3431, a high voltage, 3A, 500kHz step-down switching regulator. It features a wide input range (5.5V to 60V), 3A peak switch current, small thermally enhanced 16-pin TSSOP package, constant 500kHz switching frequency, saturated switch design (0.1Ω), peak switch current maintained over full duty cycle range, effective supply current 2.5mA, shutdown current 30µA, 1.2V feedback reference voltage, easily synchronized, cycle-by-cycle current limiting and more.
The LT3431 is a high-efficiency step-down switching regulator designed for industrial and automotive power supplies. It features a wide input voltage range from 5.5V to 60V, a constant 500kHz switching frequency, and an integrated saturating switch capable of handling 3A peak current.
| Input Voltage Range | 5.5V to 60V |
|---|---|
| Peak Switch Current | 3A |
| Switching Frequency | 500kHz |
| Package Type | 16-Pin TSSOP |
| Shutdown Current | 30pA |
| Feedback Reference Voltage | 1.2V |
The device accepts input voltages up to 60V.
The regulator operates at a constant 500kHz switching frequency.
The shutdown current is 30pA.