The LM3421-Q1 is an N-channel controller designed for constant current LED drivers, suitable for automotive applications due to its AEC qualification. It operates over a wide input voltage range of 4.5 V to 75 V and supports various topologies including buck, boost, buck-boost, and SEPIC. The device features high-side adjustable current sense for precise LED current regulation and includes a 2-,Ѷ, 1-A peak MOSFET gate driver. It offers protection features such as input undervoltage and output overvoltage protection, along with cycle-by-cycle current limiting. The internal PWM controller allows for adjustable switching frequencies up to 2 MHz, facilitating compact designs. The LM3421-Q1 operates within a temperature range of -40¬8C to 125¬8C, making it suitable for a variety of lighting applications.
N-Channel Controllers for Constant Current LED Drivers 16-HTSSOP -40 to 125
Manufacturer: Texas Instruments
Win Source Part Number: 206362-LM3421Q1MH/NO
Packaging: Tube/Rail
Type: DC DC Controller
Mounting: SMD (SMT)
Frequency: 2MHz
Topology: SEPIC, Step-Down (Buck), Step-Up (Boost)
Number of Outputs: 1
Dimming: Analog, PWM
Output Voltage: 3 V to 72 V
Categories: Integrated Circuits
Status: Active
Temperature Range - Operating: -40°C to 125°C (TJ)
Case / Package: 16-TSSOP-EP
Maximum Supply Voltage: 75V
Operating Input Voltage(Min): 4.5V
Popularity: Medium
Fake Threat In the Open Market: 46 pct.
Supply and Demand Status: Limited
LED Driver, 1-Segment, PDSO16
LED Driver, 1-Segment, PDSO16
Automotive N-channel constant current LED controller with series DIM FET driver 16-HTSSOP -40 to 125 Product overview: LM3421Q1MH/NOPB from Texas Instruments is a LED Driver IC for LED lighting, display backlights, indicator control, automotive lighting, signage, and regulated current drive circuits. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include Automotive, N-Channel, HTSSOP. Search-friendly keywords include LED driver IC, constant current, lighting control, display backlight, Automotive, N-Channel, HTSSOP, External/Internal LED Drivers. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 137-LM3421Q1MH/NOPB can be used for catalog matching and distributor lookup.
LED Driver IC 1 Output DC DC Controller SEPIC, Step-Down (Buck), Step-Up (Boost) Analog, PWM Dimming 16-TSSOP-EP
IC LED DRIVER CTRLR PWM 16TSSOP
LED Lighting Drivers N-Channel Controllers for Constant Current LED Drivers 16-HTSSOP -40 to 125
| Texas Instruments | Win Source Electronics | Rochester Electronics | ERSAELECTRONICS PTE. LTD. | DigiKey | Shenzhen Shengyu Electronics Technology Limited | VAST STOCK CO., LIMITED | |
|---|---|---|---|---|---|---|---|
| Product Category | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers |
| Product Number | LM3421Q1MH/NOPB | 206362-LM3421Q1MH/NOPB | LM3421Q1MH/NOPB | 137-LM3421Q1MH/NOPB | LM3421Q1MH/NOPB-ND | LM3421Q1MH/NOPB | LM3421Q1MH/NOPB |
| Product Name | LM3421-Q1 N-Channel Controllers for Constant Current LED Drivers | PMIC - PMIC - LED Drivers - LM3421Q1MH/NOPB | Automotive N-Channel HTSSOP LED Driver IC | LED Drivers | Integrated Circuits (ICs) - Power Management (PMIC) - LED Drivers | LED Lighting Drivers | |
| Form Factor | Intgrated Circuit (IC) | Intgrated Circuit (IC) | Intgrated Circuit (IC) | Intgrated Circuit (IC) | |||
| Type | Dimmable | ||||||
| Input Voltage | 4.5 to 75 volts | 4.5 volts | 4.5 to 75 volts | 4.5 to 75 volts | |||
| Output Voltage | 3 to 72 volts | 3 to 72 volts | 72 volts | 3 to 72 volts |
