ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC LED DRIVER RGLTR PWM 3A 8SOP
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Step-Down (Buck)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：38V
- Voltage - Output：-
- Current - Output / Channel：3A
- Frequency：1MHz
- Dimming：PWM
- Applications：Lighting
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Supplier Device Package：8-SOP-EP
- Grade：Automotive
- Qualification：-
Download product information
Overview
The IS32LT3954A-GRLA3-TR is a single-output DC-DC step-down (buck) LED driver IC manufactured by Lumissil Microsystems. It provides a regulated output current of 3A with an input voltage range of 4.5V to 38V. The device supports PWM dimming and includes spread spectrum modulation for EMI reduction. It operates within a temperature range of -40°C to +125°C and is housed in an 8-SOP-EP package.
Feature Summary
- Integrates a buck switching regulator topology for efficient LED current regulation
- Supports pulse-width modulation (PWM) dimming for brightness control
- Includes fault reporting mechanisms for system diagnostics
- Utilizes spread spectrum technology to mitigate electromagnetic interference
Applications
- Automotive lighting systems
- General illumination applications
- High-power LED drivers
Procurement Notes
Verify the specific suffix GRLA3 against the manufacturer's latest datasheet to confirm pinout, thermal pad configuration, and RoHS compliance status. Ensure the ordering part number matches the required tape-and-reel quantity of 2,500 units. Cross-reference the AEC-Q100 qualification grade if automotive reliability is required for the design.
Selection Notes
Select this component when a high-current 3A output is required from a buck converter topology. It is suitable for designs needing integrated EMI filtering via spread spectrum features. Consider the 8-SOP-EP package for thermal management requirements. Verify that the input voltage range of 4.5V to 38V aligns with the system power supply constraints.
Part Context
This part belongs to the IS32LT3954 family of LED drivers from Lumissil Microsystems. The family focuses on high-efficiency buck converters for lighting applications. The IS32LT3954A variant specifically offers enhanced features such as spread spectrum modulation compared to earlier iterations in the series.
Replacement Considerations
Check for IS32LT3954 variants with different suffixes for minor packaging or material changes. Direct substitutes may include other 3A buck LED drivers from Lumissil, but pin compatibility must be verified.
