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42-V 0.5-A constant current buck LED driver

Inventory: 7,524  

Quality information

RoHS Yes
Lead finish / Ball material SN
MSL rating / Peak reflow Level-3-260C-168 HR
Quality, reliability
& packaging information

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Packaging information

Package | Pins Package qty | Carrier: Operating temperature range (℃)
HSOIC (DDA) | 8 95 | TUBE
Package | Pins HSOIC (DDA) | 8
Package qty | Carrier: 95 | TUBE
Operating temperature range (℃)
View TI packaging information

Features for the LM3402

  • Integrated 0.5-A N-channel MOSFET
  • VIN Range from 6 V to 42 V (LM3402)
  • VIN Range from 6 V to 75 V (LM3402HV)
  • 500 mA Output Current Over Temperature
  • 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
  • VSSOP, SO PowerPAD Packages

Description for the LM3402

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.


Qty Price (USD)
1-99 1.678
100-249 1.386
250-999 0.995
1,000+ 0.749

Additional package qty | carrier options

Package qty | Carrier 2,500 | LARGE T&R
Inventory 61,450
Qty | Price (USD) 1ku | 0.624 1-99 1.398 100-249 1.154 250-999 0.829 1,000+ 0.624
Custom reel may be available