LM3404MRX LM3404MRX/NOPB Mosfet Power Transistor LED Lighting Drivers

1 Features

• Integrated 1-A MOSFET

• VIN Range 6 V to 42 V (LM3404)

• VIN Range 6 V to 75 V (LM3404HV)

• 1.2-A Output Current Overtemperature

• Cycle-by-Cycle Current Limit

• No Control Loop Compensation Required

• Separate PWM Dimming and Low Power Shutdown

• Supports All-Ceramic Output Capacitors and Capacitor-less Outputs

• Thermal Shutdown Protection

• SOIC-8 Package, SO PowerPADTM-8 Package

   

2 Applications

• LED Drivers

• Constant Current Sources

• Automotive Lighting

• General Illumination

• Industrial Lighting

   

3 Description

The LM3404 and LM3404HV devices are monolithic switching regulators designed to deliver constant currents to high power LEDs. Ideal for automotive, industrial, and general lighting applications, these devices contain a high-side N-channel MOSFET switch with a current limit of 1.5-A (typical) for step-down (Buck) regulators. Hysteretic controlled on-time and an external 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. Some features are: LED dimming using pulse width modulation (PWM), broken or open LED protection, low-power shutdown, and thermal shutdown.

Device Information