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Product Detailed Parameters
- Description：IC LED DVR BOOST 4CH 20TSSOP
- Series：*
- Mfr：Lumissil Microsystems
- Package：Tube
- Type：-
- Topology：-
- Internal Switch(s)：-
- Number of Outputs：-
- Voltage - Supply (Min)：-
- Voltage - Supply (Max)：-
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：-
- Dimming：-
- Applications：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The IS31BL3556-ZLS4 is a boost-type LED driver IC manufactured by Lumissil Microsystems. It features four independent channels, each capable of delivering up to 120 mA of output current. The device operates within an input voltage range of 4.75 V to 40 V and supports a maximum supply voltage of 40 V. It is housed in an e-TSSOP-20 package with dimensions of 6.5 mm x 6.4 mm. The component is rated for operation between -40°C and +125°C. It includes moisture sensitivity classification and is designated as Not Recommended for New Designs (NRND).
Feature Summary
- Four-channel constant current control architecture for multi-zone LED applications.
- Boost topology configuration suitable for driving LED strings from lower voltage sources.
- Integrated thermal management and protection mechanisms for reliable operation.
Applications
- Automotive interior lighting systems requiring multi-zone control.
- Industrial display backlighting solutions.
- General solid-state lighting fixtures utilizing boost topologies.
Procurement Notes
Verify the NRND status before integration into new hardware designs. Confirm package compatibility with existing PCB footprints. Check for updated lifecycle notices from Lumissil. Ensure supply chain stability due to potential phase-out status. Validate electrical parameters against specific application requirements prior to procurement.
Selection Notes
Select this component for applications requiring four isolated LED channels with moderate current drive capabilities. Consider the boost topology if the input voltage is lower than the required LED forward voltage sum. Evaluate the e-TSSOP-20 package constraints for thermal dissipation and board space. Compare against newer Lumissil alternatives if long-term availability is critical for the product lifecycle.
Part Context
This part belongs to the IS31BL series of LED drivers from Lumissil Microsystems. The series focuses on efficient power management for lighting applications. The ZLS4 suffix indicates the specific package type and temperature grade. It is distinct from linear or buck-topology drivers in the same portfolio.
Replacement Considerations
No direct public substitute part numbers are confirmed for this specific variant. Due to the NRND status, alternative components from other manufacturers or newer Lumissil models should be evaluated for functional equivalence and pin compatibility.
