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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 16HTSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Type：DC DC Controller
- Topology：SEPIC, Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：75V
- Voltage - Output：3V ~ 72V
- Current - Output / Channel：-
- Frequency：2MHz
- Dimming：Analog, PWM
- Applications：-
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-PowerTSSOP (0.173", 4.40mm Width)
- Supplier Device Package：16-HTSSOP
- Grade：-
- Qualification：-
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Overview
The LM3421MH/NOPB is an N-channel controller for constant-current LED drivers, manufactured by Texas Instruments. It supports boost, buck, and SEPIC topologies with a single output capable of up to 5 A. The device operates on a supply voltage range of 4.5 V to 75 V and delivers an output voltage between 3 V and 72 V. Switching frequency is adjustable from 100 kHz to 2 MHz. It functions within a temperature range of -40°C to +125°C and is housed in an HTSSOP-16 package.
Feature Summary
- Supports multiple LED driver topologies including boost, buck, and SEPIC configurations.
- Enables analog and PWM dimming control for lighting applications.
- Includes thermal shutdown protection for enhanced system reliability.
Applications
- Constant current LED lighting drivers
- General-purpose LED illumination systems
Procurement Notes
Verify the complete part number including suffixes such as 'X' or 'Q1' against official Texas Instruments documentation to ensure correct packaging and qualification status. Confirm RoHS compliance details directly from the manufacturer datasheet. Cross-reference the specific ordering code with authorized distributors to validate availability and authenticity before procurement.
Selection Notes
Select this component when designing LED drivers requiring flexible topology support for boost, buck, or SEPIC circuits. Ensure the application demands an input voltage up to 75 V and output currents up to 5 A. Verify that the operating environment falls within the specified -40°C to +125°C range and that HTSSOP-16 packaging fits the board layout constraints.
Part Context
This device belongs to the LM3421 series of N-channel controllers designed specifically for constant-current LED driving applications. It is produced by Texas Instruments and represents a solution for high-performance LED lighting designs requiring precise current regulation and flexible power stage configurations.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult official Texas Instruments resources for potential cross-references or updated series replacements.
