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Product Detailed Parameters
- Description：IC LED DRV RGLTR PWM 1A TSOT23-6
- 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)：3V
- Voltage - Supply (Max)：22V
- Voltage - Output：-
- Current - Output / Channel：1A
- Frequency：1.6MHz
- Dimming：PWM
- Applications：Lighting
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-6 Thin, TSOT-23-6
- Supplier Device Package：TSOT-23-6
- Grade：-
- Qualification：-
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Overview
The LM3405AXMKE/NOPB is a constant current buck LED driver IC from Texas Instruments, designed for high-brightness LED applications. It operates with an input voltage range of 3V to 22V and delivers a regulated output current of 1A. The device features an integrated power switch and supports PWM dimming for brightness control. It functions within a switching frequency range of 1.2MHz to 1.9MHz and is housed in an MSOP-PowerPad-8 package. The component is rated for operation between -40°C and +125°C.
Feature Summary
- Integrates a high-side N-channel power switch for compact design
- Supports PWM dimming for precise brightness adjustment
- Includes thermal shutdown protection for enhanced reliability
Applications
- High-power LED lighting systems
- Automotive exterior lighting modules
- Portable battery-powered LED fixtures
Procurement Notes
Verify the exact suffix against official Texas Instruments documentation to confirm pinout and package variations. Ensure compatibility with required thermal management solutions given the PowerPad configuration. Cross-reference RoHS compliance status with the latest manufacturer release notes before finalizing procurement specifications.
Selection Notes
Select this component when a single-channel constant current solution is required for high-brightness LEDs. It is suitable for designs needing wide input voltage flexibility and integrated switching capabilities. Consider the MSOP-PowerPad-8 package for space-constrained PCB layouts requiring efficient heat dissipation through the exposed pad.
Part Context
This part belongs to the LM3405A series of LED drivers, which are optimized for driving high-power LEDs from various supply voltages. The series is widely used in automotive and general illumination markets due to its robust protection features and simple external component requirements. It serves as a cost-effective alternative to discrete MOSFET-based solutions.
Replacement Considerations
Direct substitutes include the LM3405XMK/NOPB and LM3405XMY/NOPB, though package differences must be evaluated. Verify functional equivalence regarding switching frequency and current regulation accuracy before substitution.
