0
ACTIVE
Input voltage type |
DC/DC |
Topology |
Buck |
Vin (min) (V) |
6 |
Vin (max) (V) |
42 |
Vout (max) (V) |
40 |
Vout (min) (V) |
0.2 |
Iout (max) (A) |
1 |
Iq (typ) (mA) |
0.625 |
Features |
Adjustable Switch Frequency, Enable/Shutdown, Integrated Switch, Thermal shutdown |
Operating temperature range (°C) |
-40 to 125 |
Dimming method |
PWM |
Number of channels |
1 |
Rating |
Catalog |
HSOIC (DDA)-8-29.4 mm² 4.9 x 6
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.
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