The LM3402/HV are monolithic switching regulators designed to deliver constant currents to high power LEDs. Ideal for automotive, industrial, and general lighting applications, they contain a high-side N-channel MOSFET switch with a current limit of 735 mA (typical) for step-down (Buck) regulators. Hysteretic control with controlled ON-time coupled with an external resistor allow the converter output voltage to adjust as needed to deliver a constant current to series and series - parallel connected arrays of LEDs of varying number and type, LED dimming by pulse width modulation (PWM), broken/open LED protection, low-power shutdown and thermal shutdown complete the feature set.
For all available packages, see the orderable addendum at the end of the data sheet.| Documentación principal | Tipo | Título | Opciones de formato | Descargar la versión más reciente en inglés | Fecha |
|---|---|---|---|---|---|
| * | Hoja de datos | LM3402/HV 0.5-A Constant Current Buck Regulator for Driving High Power LEDs datasheet (Rev. F) | PDF | HTML | 29/10/2015 | |
| Informe | Common LED Functions and LED Driver Design Considerations | 21/09/2020 | |||
| Guía de selección | Power Management Guide 2018 (Rev. R) | 25/06/2018 | |||
| Nota sobre la aplicación | AN-1656 Design Challenges of Switching LED Drivers (Rev. A) | 3/05/2013 | |||
| Nota sobre la aplicación | Thermal Performance of the LM3404/04HV in SO-8 and PSOP-8 Packages (Rev. A) | 1/05/2013 | |||
| Nota sobre la aplicación | AN-1853 COT Drivers Control LED Ripple Current (Rev. A) | 1/05/2013 | |||
| Nota sobre la aplicación | AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) | 23/04/2013 |
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The LM3404/04HV are buck regulator derived controlled current sources designed to drive a series string of high power, high brightness LEDs (HBLEDs) at forward currents of up to 1.0A (LM3404/04HV). This evaluation board demonstrates the enhanced thermal performance, fast dimming and true constant (...)
The LM3402/02HV and LM3404/04HV are buck regulator derived controlled current sources designed to drive a series string of high power, high brightness LEDs (HBLEDs) such as the Luxeon™ K2 Emitter at forward currents of up to 0.5A (LM3402/02HV) or 1.0A (LM3404/04HV). This evaluation board (...)
| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |
| HSOIC (DDA) | 8 | Ultra Librarian |
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