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Product Detailed Parameters
- Description：IC LED DRV LIN PWM 16ETSSOP
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：Constant Current
- Internal Switch(s)：Yes
- Number of Outputs：4
- Voltage - Supply (Min)：5V
- Voltage - Supply (Max)：28V
- Voltage - Output：-
- Current - Output / Channel：150mA
- Frequency：-
- Dimming：PWM
- Applications：Lighting
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：16-eTSSOP
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The IS32LT3124B-ZLA3-TR is a quad-channel linear LED driver IC manufactured by Lumissil Microsystems. It provides four constant current outputs with a maximum output current of 95 mA per channel. The device operates within a supply voltage range of 5 V to 28 V and supports PWM dimming for brightness control. Packaged in a 16-pin eTSSOP (5.0mm x 6.4mm) with an exposed pad, it features integrated MOSFETs and dynamic headroom control (DHC). The component includes fault reporting capabilities with one-fail-all-fail logic and auto-recovery functions, suitable for automotive-grade applications operating between -40°C and +125°C.
Feature Summary
- Integrates dynamic headroom control (DHC) to optimize power dissipation across channels
- Provides comprehensive fault detection with one-fail-all-fail protection and automatic recovery
- Supports pulse-width modulation (PWM) dimming for precise brightness regulation
Applications
- Automotive exterior lighting systems
- Interior vehicle illumination modules
- General-purpose LED lighting arrays requiring thermal management
Procurement Notes
Verify the specific suffix ZLA3 corresponds to the required tape-and-reel packaging configuration. Confirm that the 16-pin eTSSOP footprint matches the target PCB layout dimensions. Ensure the design accommodates the exposed pad for thermal dissipation given the linear regulation topology. Check for AEC-Q100 qualification status if deploying in automotive environments.
Selection Notes
Select this component when a single IC must drive multiple LEDs with independent current control. The quad-channel architecture reduces board space compared to discrete solutions. Consider the linear topology limitations regarding input-output voltage differential and resulting heat generation. The integrated fault protection simplifies system safety design without external monitoring circuits.
Part Context
This part belongs to the IS32LT series of linear LED drivers from Lumissil Microsystems. It complements other variants like the IS32LT3128A which offers three channels, and the IS32LT3140A which provides a single high-current channel. The series focuses on simplified designs for automotive and industrial lighting where reliability and thermal efficiency are critical.
Replacement Considerations
Direct substitutes include the IS32LT3124A if available, though pinout compatibility must be verified. For higher channel counts, consider the IS32LT3146 six-channel driver. Single-channel replacements require multiple units or different architectures.
