National Semiconductor LM3406HV
The LM3406/06HV are monolithic switching regulators designed to deliver constant currents to high power LEDs. The product feature set is rounded out with lowpower shutdown and thermal shutdown protection.| Part No. | LM3406HV |
|---|---|
| Datasheet | LM3406HV Download |
| Manufacturer |  National Semiconductor |
| Description | 1.5A Constant Current Buck Regulator |
| Buy | Stock & Price |
GENERAL DESCRIPTION
Ideal for automotive, industrial, and general lighting applications, they contain a high-side N-channel MOSFET switch with a current limit of 2.0A (typical) for step-down (Buck) regulators. Controlled on-time with true average current and an external current sense resistor allow the converter output voltage to adjust as needed to deliver a constant current to series and series-parallel connected LED arrays of varying number and type. LED dimming via pulse width modulation (PWM) is achieved using a dedicated logic pin or by PWM of the power input voltage.FEATURES
● Integrated 2.0A MOSFET● VIN Range 6V to 42V (LM3406)
● VIN Range 6V to 75V (LM3406HV)
● True average output current control
● 1.7A Minimum Output Current Limit Over Temperature
● Cycle-by-Cycle Current Limit
● PWM Dimming with Dedicated Logic Input
● PWM Dimming with Power Input Voltage
● Simple Control Loop Compensation
● Low Power Shutdown
● Supports All-Ceramic Output Capacitors and Capacitor- less Ou...
