Texas Instruments LM3406
The LM3406 family are monolithic switching regulators designed to deliver constant currents to high power LEDs. The product feature set is rounded out with low-power shutdown and thermal shutdown protection.| Part No. | LM3406 |
|---|---|
| Datasheet | LM3406 Download |
| Manufacturer |  Texas Instruments |
| Description | 1.5-A Constant Current Buck Regulator |
| Buy | Stock & Price |
FEATURES
●1 LM3406HV-Q1 – Automotive Grade Device – AEC-Q100 Grade 1 Qualified – Operating Ambient Temperature: –40°C to 125°C● Integrated 2.0A MOSFET
● VIN Range 6V to 42V (LM3406)
● VIN Range 6V to 75V (LM3406HV)
● VIN Range 6V to 75V (LM3406HV-Q1)
● 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 Outputs
● Thermal Shutdown Protection
● TSSOP-14 Package 3
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.
