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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM SOT23-5
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Controller
- Topology：Step-Down (Buck)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：6V
- Voltage - Supply (Max)：40V
- Voltage - Output：40V
- Current - Output / Channel：-
- Frequency：1MHz
- Dimming：Analog, PWM
- Applications：Backlight, Lighting
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- Grade：Automotive
- Qualification：-
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Overview
The IS31LT3354-STLS2-TR is a DC-DC controller designed for LED lighting applications. It operates as a step-down (buck) converter with an input voltage range of 6V to 40V and supports a switching frequency of 1MHz. The device provides one output capable of driving LEDs up to 40V. It features analog and PWM dimming capabilities and is housed in a SOT-23-5 package. Rated for automotive grade performance, it functions within a temperature range of -40°C to 85°C.
Feature Summary
- Supports both analog and PWM dimming methods for precise light control
- Designed as a continuous mode inductive step-down converter for efficient LED driving
- Automotive grade qualification ensures reliability in demanding environments
Applications
- LED backlighting systems
- General LED illumination
- Automotive lighting circuits
Procurement Notes
Verify the specific ordering suffix STLS2-TR to confirm the SOT-23-5 package and tape-and-reel quantity. Confirm RoHS3 compliance status and check for recent Product Change Notifications regarding lead frame or material updates before finalizing procurement specifications.
Selection Notes
Select this component when a single-output buck topology is required for LED strings powered by 6V to 40V sources. Ensure the design accommodates the 1MHz switching frequency and verify that the SOT-23-5 package fits the PCB layout constraints. Consider thermal management requirements for the operating temperature range.
Part Context
This part belongs to the Lumissil IS31LT3354 series of LED drivers. It is distinct from other series members like the IS31LT3350, which may feature different internal switches or frequencies. The STLS2-TR designation specifically identifies the surface-mount variant intended for automated assembly processes.
Replacement Considerations
Check for direct substitutes within the IS31LT335x family. Verify pin compatibility and electrical parameters against alternatives such as the IS31LT3350 if internal switch configurations differ. Consult official substitution guides for confirmed equivalents.
