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Product Detailed Parameters
- Description：IC LED DRV LIN PWM 20ETSSOP
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：-
- Internal Switch(s)：No
- Number of Outputs：3
- Voltage - Supply (Min)：5V
- Voltage - Supply (Max)：42V
- Voltage - Output：-
- Current - Output / Channel：150mA
- Frequency：-
- Dimming：PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：20-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：20-eTSSOP
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The IS32LT3129-ZLA3-TR is a dual-channel linear LED driver IC manufactured by Lumissil Microsystems. It provides a constant current output of 150mA per channel, suitable for driving high-power LEDs in lighting applications. The device features fade-in and fade-out functionality for smooth power transitions. It operates within a supply voltage range of 5V to 42V and supports PWM dimming control. The component is housed in a 20-pin eTSSOP package with an exposed pad (6.5mm x 6.4mm) for thermal management. It is rated for an operating temperature range of -40°C to +125°C and holds AEC-Q100 automotive qualification.
Feature Summary
- Dual-channel linear regulation with integrated fade-in and fade-out capabilities
- Supports PWM dimming for precise brightness control
- Automotive-grade reliability with AEC-Q100 certification
- Wide input voltage range accommodating various system architectures
Applications
- Automotive interior and exterior lighting systems
- General commercial solid-state lighting fixtures
- Residential LED downlights and accent lighting
- Industrial LED panel illumination
Procurement Notes
Verify the specific suffix ZLA3 against the manufacturer's latest datasheet to confirm pinout and packaging dimensions. Confirm AEC-Q100 compliance requirements if deploying in automotive environments. Check for Product Change Notifications (PCN) regarding recent manufacturing updates. Ensure ESD handling protocols are followed due to moisture sensitivity classification. Validate thermal dissipation requirements for the eTSSOP-20 package in the final enclosure design.
Selection Notes
Select this component when a dual-channel solution with synchronized fade functions is required. It is appropriate for designs needing linear regulation simplicity without external inductors. Consider the 150mA output limit when sizing LED arrays. The wide voltage range allows flexibility in bus voltage selection. Evaluate the thermal performance of the exposed pad layout for high ambient temperature operations.
Part Context
This part belongs to the IS32LT series of linear LED drivers from Lumissil Microsystems. The series focuses on providing reliable, low-noise current regulation for LED applications. The LT prefix typically denotes linear technology within the product line. These devices are designed to replace traditional resistive current limiting methods for improved efficiency and consistency.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Engineers should consult Lumissil Microsystems directly for qualified alternatives or cross-reference options based on specific electrical and mechanical constraints.
