The LM3404HV is a monolithic switching regulator designed to deliver constant currents to high power LEDs. It functions as a step-down (buck) regulator with an integrated 1.0-A MOSFET switch and a typical current limit of 1.5A. The device supports a wide input voltage range from 6V to 75V and utilizes hysteretic controlled on-time to maintain constant current for series-connected LED arrays without the need for external control loop compensation.
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| Input Voltage (Min) | 6V |
| Input Voltage (Max) | 75V |
| Output Current (Max) | 1.0A |
| Switching Frequency (Max) | 1000kHz |
| Quiescent Current (Typ) | 0.625mA |
| Operating Temperature Range | -40 to 125°C |
| Current Limit (Typ) | 1.5A |
| RoHS | Yes |
| REACH | Yes |
| Msl Rating | Level-1-260C-UNLIM |
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