LM3404 1.0A Constant Current Buck Regulator for High Power LED Drivers | TI.com

LM3404
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
1.0A Constant Current Buck Regulator for High Power LED Drivers

 

Recommended alternative parts

  • TPS92515  -  2A LED driver, integrated N-channel FET, high-sde current sense, Shunt PWM dimming capable

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.

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-lessOutputs
  • Thermal Shutdown Protection
  • SOIC-8 Package, SO PowerPAD™-8 Package

WEBENCH® Designer LM3404

  V in Lower V in Upper
6.0 ≤  V  V ≤ 42.0
Ambient Temp  °C ≤ 100°C
Light Output (optional)  Lumens

Parametrics

Compare all products in General lighting LED drivers Email Download to Excel
Part number Order Input voltage (type) Vin (Min) (V) Vin (Max) (V) Iout (Max) (A) Vout (Min) (V) Vout (Max) (V) Regulated outputs (#) Topology Dimming method Power factor correction (Min) Type Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Vref (V) UVLO thresholds on/off (V) Features Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
LM3404 Order now DC/DC     6     42     1     0.2     40     1     Buck     PWM         Inductive     20     1000     0.625     0.2     5.3 / 5.15     Adjustable Switch Frequency
Enable/Shutdown
Integrated Switch
Thermal Shutdown    
-40 to 125     SO PowerPAD | 8
SOIC | 8    
8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)