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) |
1.5 |
Iq (typ) (mA) |
1.2 |
Features |
Adjustable Switch Frequency, Enable/Shutdown, Integrated Switch, Precision Dimming Control, Thermal shutdown |
Operating temperature range (°C) |
-40 to 125 |
Dimming method |
2-Wire, PWM |
Number of channels |
1 |
Rating |
Catalog |
HTSSOP (PWP)-14-32 mm² 5 x 6.4
The LM3406 family 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 2.0A (typical) for step-down (Buck) regulators. Controlled on-time with true average current and an external current sense 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. LED dimming via pulse width modulation (PWM) is achieved using a dedicated logic pin or by PWM of the power input voltage. The product feature set is rounded out with low-power shutdown and thermal shutdown protection.
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