LM3423Q1MHX/NOPB
ActiveAUTOMOTIVE N-CHANNEL CONSTANT CURRENT LED CONTROLLER WITH SERIES DIM FET DRIVER AND FAULT FLAG
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LM3423Q1MHX/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 | LM3423Q1MHX/NOPB |
|---|---|
| Dimming | Analog, PWM |
| Frequency | 2 MHz |
| Grade | Automotive |
| Internal Switch(s) | False |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 ¯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 |
LM3423-Q1 Series
Automotive N-channel constant current LED controller with series DIM FET driver and fault flag
| Part | Current - Output / Channel | Utilized IC / Part | Supplied Contents | Voltage - Input [Min] | Voltage - Input [Max] | Outputs and Type | Current - Output / Channel [custom] | Features | Voltage - Output | Outputs and Type | Voltage - Supply (Max) [Max] | Qualification | Number of Outputs | Package / Case | Package / Case [custom] | Package / Case | Frequency | Supplier Device Package | Topology | Dimming | Mounting Type | Type | Grade | Operating Temperature [Max] | Operating Temperature [Min] | Voltage - Supply (Min) [Min] | Internal Switch(s) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Texas Instruments | 700 mA | LM3423 | Board(s) | 10 V | 70 V | 1 Non-Isolated Output | |||||||||||||||||||||
 Texas Instruments | LM3423 | Board(s) | 4.5 V | 35 V | Non-Isolated | 1 A | Dimmable | 35 V | 1 | ||||||||||||||||||
Texas Instruments | 75 V | AEC-Q100 | 1 | 20-PowerTSSOP | 4.4 mm | 0.173 in | 2 MHz | 20-HTSSOP | SEPIC Step-Down (Buck) Step-Up (Boost) | Analog PWM | Surface Mount | DC DC Controller | Automotive | 150 °C | -40 °C | 4.5 V | |||||||||||
Texas Instruments | 75 V | AEC-Q100 | 1 | 20-PowerTSSOP | 4.4 mm | 0.173 in | 2 MHz | 20-HTSSOP | SEPIC Step-Down (Buck) Step-Up (Boost) | Analog PWM | Surface Mount | DC DC Controller | Automotive | 150 °C | -40 °C | 4.5 V | |||||||||||
 Texas Instruments | LM3423 | Board(s) | 4.5 V | 35 V | Non-Isolated | 1 A | Dimmable | 35 V | 1 | ||||||||||||||||||
Texas Instruments | 75 V | AEC-Q100 | 1 | 20-PowerTSSOP | 4.4 mm | 0.173 in | 2 MHz | 20-HTSSOP | SEPIC Step-Down (Buck) Step-Up (Boost) | Analog PWM | Surface Mount | DC DC Controller | Automotive | 125 ¯C | -40 °C | 4.5 V | |||||||||||
Texas Instruments | 75 V | 1 | 20-PowerTSSOP | 4.4 mm | 0.173 in | 2 MHz | 20-HTSSOP | SEPIC Step-Down (Buck) Step-Up (Boost) | Analog PWM | Surface Mount | DC DC Controller | 125 ¯C | -40 °C | 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 | Cut Tape (CT) | 1 | $ 2.79 | |
| 10 | $ 2.51 | |||
| 25 | $ 2.37 | |||
| 100 | $ 2.06 | |||
| 250 | $ 1.95 | |||
| 500 | $ 1.75 | |||
| 1000 | $ 1.48 | |||
| Digi-Reel® | 1 | $ 2.79 | ||
| 10 | $ 2.51 | |||
| 25 | $ 2.37 | |||
| 100 | $ 2.06 | |||
| 250 | $ 1.95 | |||
| 500 | $ 1.75 | |||
| 1000 | $ 1.48 | |||
| Tape & Reel (TR) | 2500 | $ 1.40 | ||
| 5000 | $ 1.35 | |||
| Texas Instruments | LARGE T&R | 1 | $ 2.11 | |
| 100 | $ 1.85 | |||
| 250 | $ 1.30 | |||
| 1000 | $ 1.04 | |||
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