60W Common Anode Capable Constant Current Buck LED Driver Requires No Ext. Current Sensing Res - LM3414HV

LM3414HV (ACTIVE)

60W Common Anode Capable Constant Current Buck LED Driver Requires No Ext. Current Sensing Res

Description

The LM3414 and LM3414HV are 1A 60W (see Note below) common anode capable constant current buck LED drivers. They are exceptionally 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, analog 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 240 Hz 256-step dimming resolution requirement for general lighting.

The LM3414 and LM3414HV are available in SOIC-8 and 3mm x 3mm WSON-8 packages.

Note: Thermal de-rating applies according to actual operation conditions

Features

  • Support LED Power up to 60W (see Note under Description): 18x 3W HBLEDs
  • Requires NO External Current Sensing Resistor
  • ±3% LED Current Accuracy
  • Up to 96% Efficiency
  • High Contrast Ratio (Minimum Dimming Current Pulse Width <10 µS)
  • Integrated Low-Side N-Channel MOSFET
  • Adjustable Constant LED Current From 350mA to 1000mA
  • Support Analog Dimming and Thermal Fold-Back
  • Wide Input Voltage Range:
    • 4.5V to 42V (LM3414)
    • 4.5V to 65V (LM3414HV)
  • Constant Switching Frequency Adjustable from 250 kHz to 1000 kHz
  • Thermal Shutdown Protection
  • Power Enhanced SOIC-8 or 3mm x 3mm WSON-8 Package

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Parametrics Compare all products in LED Lighting - Illumination

 
Input Voltage (Type)
Vin (Min) (V)
Vin (Max) (V)
Iout (Max) (A)
Vout (Min) (V)
Vout (Max) (V)
Regulated Outputs (#)
Topology
Dimming Method
Type
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Vref (V)
UVLO Thresholds On/Off (V)
Special Features
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
LM3414HV LM3414 TPS92511
DC/DC     DC/DC     DC/DC    
4.5     4.5     4.5    
65     42     65    
1     1     0.5    
0.2     0.2     0.2    
65     42     65    
1     1     1    
Buck     Buck     Buck    
Analog
PWM    
Analog
PWM    
Analog
PWM    
Inductive     Inductive     Inductive    
250     250     100    
1000     1000     500    
3.3     3.2     2.8    
0.2     0.2     0.2    
3.75 / 3.45     3.75 / 3.45     3.8 / 3.5    
Adjustable Switch Frequency
Enable/Shutdown
Thermal Shutdown
Integrated Switch    
Adjustable Switch Frequency
Enable/Shutdown
Thermal Shutdown
Integrated Switch    
Adjustable Switch Frequency
Enable/Shutdown
Integrated Switch
Thermal Shutdown    
Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125    
8SO PowerPAD
8WSON    
8SO PowerPAD
8WSON    
8SO PowerPAD    
0.80 | 1ku     0.70 | 1ku     0.60 | 1ku    

Featured tools and software

WEBENCH® LM3414HV
 
4.50 <=


V in Lower
 V
 
<=


V in Upper
 V
 
<= 65.00
Ambient Temp  °C <= 100
Light Output (optional)  Lumens



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