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Product Detailed Parameters
- Description：IC LED DRIVER RGLTR PWM 1A 8SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Step-Down (Buck)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：6V
- Voltage - Supply (Max)：42V
- Voltage - Output：40V
- Current - Output / Channel：1A
- Frequency：1MHz
- Dimming：PWM
- Applications：Lighting
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：Automotive
- Qualification：-
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Overview
The LM3404MAX is a monolithic switching regulator designed to deliver constant currents to high power LEDs. It operates as a buck converter with an input voltage range of 6V to 42V and provides a regulated output current of up to 1.0A. The device supports PWM dimming for brightness control and includes protection features such as thermal shutdown and open LED detection. It is housed in an 8-SOIC package and functions within a temperature range of -40°C to 125°C.
Feature Summary
- Monolithic switching regulator architecture optimized for high-power LED applications
- Supports pulse width modulation (PWM) dimming for precise brightness control
- Integrated thermal shutdown and broken or open LED protection mechanisms
Applications
- High power LED lighting systems
- LED backlighting drivers
- General purpose constant current buck regulation
Procurement Notes
Verify the specific suffix against official Texas Instruments documentation to confirm exact electrical characteristics and pinout compatibility. Ensure the component matches the required SOIC-8 package dimensions and operating temperature range specifications before integration into final designs.
Selection Notes
Select this component when a fixed 1.0A constant current source is required for high-power LEDs. Consider the 6V to 42V input range and PWM dimming capability. Verify that the 8-SOIC package fits the PCB layout constraints and that the thermal performance meets the application's heat dissipation requirements.
Part Context
This part belongs to the LM3404xx family of 1-A constant current buck regulators from Texas Instruments. The MAX suffix indicates the commercial/industrial temperature grade and SOIC package variant. It serves as a dedicated driver solution for high-brightness LED arrays requiring stable current regulation.
Replacement Considerations
The LM3404MAX/NOPB is the lead-free version of this component. Verify cross-compatibility with other LM3404 variants if system design allows for minor parameter adjustments.
