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Product Detailed Parameters
- Description：IC LED DRIVER OFFL DIM 10VSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Type：AC DC Offline Switcher
- Topology：Step-Down (Buck)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：8V
- Voltage - Supply (Max)：12V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：30kHz ~ 1MHz
- Dimming：Triac
- Applications：Lighting
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Supplier Device Package：10-VSSOP
- Grade：-
- Qualification：-
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Overview
The LM3445MMX/NOPB is a single-output, non-isolated LED lighting driver IC manufactured by Texas Instruments. It utilizes a buck topology to provide constant current output of 1 A with an adjustable voltage range. The device operates on a DC input supply between 8 V and 12 V. It supports forward phase (Triac), PWM, and reverse phase dimming methods. The component functions within a switching frequency range of 30 kHz to 1 MHz and is housed in an MSOP-10 package. It is rated for operation from -40°C to +125°C.
Feature Summary
- Supports Triac, PWM, and reverse phase dimming capabilities
- Non-isolated buck converter topology for compact design
- Integrated constant current regulation for LED loads
Applications
- LED light bulb replacements
- Commercial solid-state lighting
- Residential lighting fixtures
Procurement Notes
Verify the specific suffix 'MMX' indicates the tape-and-reel packaging variant distinct from the 'MM' cut-tape version. Confirm RoHS compliance status through official manufacturer documentation. Ensure the ordering part number matches the required package style for your assembly process. Cross-reference the datasheet revision date to confirm technical specifications remain unchanged.
Selection Notes
Select this component for applications requiring a non-isolated solution to minimize size and cost. It is suitable for designs needing integrated dimming control without external isolation barriers. Consider the MSOP-10 package constraints for thermal management. Verify that the input voltage range aligns with the system power supply architecture.
Part Context
This part belongs to the LM3445 series of LED drivers designed for high-efficiency, low-component-count solutions. It is commonly used in modern LED bulbs that replace traditional incandescent sources. The series focuses on reducing bill-of-materials costs while maintaining reliable performance in general illumination tasks.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation.
