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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 20HTSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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：-
- Current - Output / Channel：-
- Frequency：2MHz
- Dimming：Analog, PWM
- Applications：-
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：20-PowerTSSOP (0.173", 4.40mm Width)
- Supplier Device Package：20-HTSSOP
- Grade：-
- Qualification：-
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Overview
The LM3423MHX/NOPB is an N-channel controller for constant current LED drivers, manufactured by Texas Instruments. It supports Boost, Buck, and SEPIC topologies with a maximum output current of 5 A. The device operates within a supply voltage range of 4.5 V to 75 V and features an adjustable switching frequency from 100 kHz to 2 MHz. It provides adjustable output voltage and supports both analog and PWM dimming. The component is housed in a 20-HTSSOP package and functions reliably across a temperature range of -40°C to +125°C.
Feature Summary
- Supports multiple converter topologies including Boost, Buck, and SEPIC configurations
- Enables precise constant current regulation for LED applications
- Offers flexible dimming capabilities through analog and PWM control interfaces
Applications
- LED lighting driver circuits
- Automotive illumination systems
- General-purpose constant current power supplies
Procurement Notes
Verify the specific suffix against official documentation to confirm package type and temperature grade. Ensure compatibility with required topology and input voltage ranges before integration. Cross-reference datasheet specifications for thermal performance and switching frequency limits to validate design requirements.
Selection Notes
Select this controller when designing LED drivers requiring high input voltage tolerance up to 75 V. Consider its support for various topologies to simplify schematic design. Evaluate the 5 A output capability against load requirements. Confirm that the HTSSOP-20 package fits the available PCB space and thermal management strategy.
Part Context
This component belongs to the LM3423 series of LED lighting driver ICs. It serves as a versatile controller for driving LEDs in various configurations. The series is designed for robust performance in demanding environments, supporting wide input voltage ranges and multiple operating modes.
Replacement Considerations
LM3423Q1MH-NOPB
FAQ
What switching frequencies are supported?
The device supports an adjustable switching frequency ranging from 100 kHz to 2 MHz.
Does it support PWM dimming?
Yes, the controller supports both analog and PWM dimming methods.
