The LM3414HVMR/NOPB is a common anode capable Constant Current Buck LED Driver suitable to drive single string of 3W HBLED with up to 96% efficiency. They accept input voltages from 4.5VDC to 65VDC and deliver up to 1A average LED current with ±3% accuracy. The integrated low-side N-channel power MOSFET and current sensing element realize simple and low component count circuitry as no bootstrapping capacitor and external current sensing resistor are required. An external small-signal resistor to ground provides very fine LED current adjustment, analogue dimming as well as thermal fold-back functions. Constant switching frequency operation eases EMI. No external loop compensation network is needed. The proprietary Pulse-Level-Modulation (PLM) control method benefits in high conversion efficiency and true average LED current regulation. Fast response time realizes fine LED current pulse fulfilling the 240Hz 256-step dimming resolution requirement for general lighting.
● Requires no external current sensing resistor
● ±3% LED current accuracy
● Up to 96% efficiency
● Integrated low-side n-channel MOSFET
● Support analogue dimming and thermal fold-back
● Thermal shutdown protection
● Green product and no Sb/Br
●This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
