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Product Detailed Parameters
- Description：IC LED DRV LIN PWM 78MA 28ETSSOP
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tube
- Type：Linear
- Topology：Constant Current
- Internal Switch(s)：No
- Number of Outputs：18
- Voltage - Supply (Min)：2.7V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：78mA
- Frequency：-
- Dimming：PWM
- Applications：-
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：28-eTSSOP
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The IS32FL3209-ZLA3 is an 18-channel linear constant current LED driver IC designed for automotive and lighting applications. It features 76mA per channel output current with 24/4kHz PWM dimming capability and 1/24 DC scaling for white balance adjustment. The device operates within a supply voltage range of 2.7V to 5.5V, supporting a switching frequency of 1MHz. It is housed in an eTSSOP-28 package (9.7mm x 6.4mm) and functions reliably across a temperature range of -40°C to +125°C.
Feature Summary
- Provides 18 independent constant current channels for precise LED control
- Supports high-frequency PWM dimming combined with DC scaling for enhanced color accuracy
- Integrates thermal protection mechanisms to ensure operational safety
Applications
- Automotive interior and exterior lighting systems
- General solid-state lighting fixtures
- Display backlighting modules requiring uniform brightness
Procurement Notes
Verify the specific suffix ZLA3 against the manufacturer's latest datasheet to confirm pinout and packaging dimensions. Ensure the design supports the required 1MHz switching frequency and thermal dissipation for the eTSSOP-28 package. Confirm availability status as distribution data may indicate limited stock or long lead times for this specific component variant.
Selection Notes
Select this component when an 18-channel solution with integrated linear regulation is required. It is suitable for designs needing precise current matching without external sense resistors. Consider the eTSSOP-28 footprint constraints and the 5.5V maximum input voltage limit during schematic capture. Validate that the 76mA per channel rating meets the target LED string requirements.
Part Context
This part belongs to Lumissil's IS32FL series of LED drivers, which are optimized for high-channel-count applications. The series typically integrates I2C interfaces for configuration, although specific interface details for this exact revision should be verified in the official documentation. It serves as a compact alternative to discrete driver solutions in space-constrained PCB layouts.
Replacement Considerations
Check for direct cross-references from Lumissil's product change notifications. No public substitute part numbers are confirmed in the provided source material.
