LM3423Q0MH/NOPB
ActiveAUTOMOTIVE N-CHANNEL CONSTANT CURRENT LED CONTROLLER WITH SERIES DIM FET DRIVER AND FAULT FLAG
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LM3423Q0MH/NOPB
ActiveAUTOMOTIVE N-CHANNEL CONSTANT CURRENT LED CONTROLLER WITH SERIES DIM FET DRIVER AND FAULT FLAG
Technical Specifications
Parameters and characteristics for this part
| Specification | LM3423Q0MH/NOPB |
|---|---|
| Dimming | Analog, PWM |
| Frequency | 2 MHz |
| Grade | Automotive |
| Internal Switch(s) | False |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 20-PowerTSSOP |
| Package / Case | 0.173 in |
| Package / Case [custom] | 4.4 mm |
| Qualification | AEC-Q100 |
| Supplier Device Package | 20-HTSSOP |
| Topology | SEPIC, Step-Down (Buck), Step-Up (Boost) |
| Type | DC DC Controller |
| Voltage - Supply (Max) [Max] | 75 V |
| Voltage - Supply (Min) [Min] | 4.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 292 | $ 4.26 | |
| Texas Instruments | TUBE | 1 | $ 4.61 | |
| 100 | $ 4.04 | |||
| 250 | $ 2.83 | |||
| 1000 | $ 2.28 | |||
Description
General part information
LM3423-Q1 Series
The LM3421-Q1 and LM3423-Q1 family of devices are versatile high voltage N-channel MOSFET controllers for LED drivers. They can be easily configured in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with an input voltage rating of 75 V, makes the these controllers ideal for illuminating LEDs in a large family of applications.
Adjustable high-side current sense voltage allows for tight regulation of the LED current with the highest efficiency possible. The LM3421-Q1 and LM3423-Q1 devices use predictive off-time (PRO) control, which is a combination of peak current-mode control and a predictive off-timer. This method of control eases the design of loop compensation while providing inherent input voltage feed-forward compensation.
The LM3421-Q1 and LM3423-Q1 devices include a high-voltage start-up regulator that operates over a wide input range of 4.5 V to 75 V. The internal PWM controller is designed for adjustable switching frequencies of up to 2 MHz, thus enabling compact solutions.
Documents
Technical documentation and resources
