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Product Detailed Parameters
- Description：IC LED DRVR RGLTR PWM 30MA 8MLPD
- Series：-
- Mfr：Semtech Corporation
- Package：Tape & Reel (TR)
- Type：DC DC Regulator
- Topology：Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：2.8V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：5V ~ 22V
- Current - Output / Channel：30mA
- Frequency：800kHz
- Dimming：PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-UFDFN Exposed Pad
- Supplier Device Package：8-MLPD-UT (2x2)
- Grade：-
- Qualification：-
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Overview
The SC4539ULTRT is a high-efficiency DC-DC step-up LED driver IC manufactured by Semtech Corporation. It regulates current for series chains of white LEDs, featuring an input voltage range of 2.8V to 5.5V and an output voltage capability of 5V to 22V. The device delivers a constant output current of 30mA with a typical accuracy of 3.5%. It supports PWM dimming and is housed in an 8-MLPD-UT (2x2) package.
Feature Summary
- High efficiency DC-DC step-up topology designed for small form factor applications
- Integrated PWM dimming control for backlighting adjustment
- Constant current regulation with specified accuracy for consistent LED brightness
Applications
- LCD backlighting for portable devices
- Series chain white LED regulation
- Small size electronic display illumination systems
Procurement Notes
Verify the specific ordering suffix and package variant against the manufacturer's official datasheet to ensure compatibility with your design requirements. Confirm that the component status remains active before finalizing procurement plans. Cross-reference the part number with authorized distributors to avoid counterfeit sources. Ensure thermal management guidelines are followed during integration.
Selection Notes
Select this component when designing compact LCD backlighting solutions requiring high efficiency and precise current regulation. The wide input voltage range accommodates single-cell battery operation. Consider the 8-MLPD-UT package constraints for PCB layout and thermal dissipation. Verify that the required output voltage and current parameters align with the LED string configuration.
Part Context
This component belongs to the power management integrated circuit category, specifically within the LED drivers subcategory. It is produced by Semtech Corporation and functions as a DC-DC regulator. The device is part of a series designed for efficient light emission control in consumer electronics and portable displays.
Replacement Considerations
Consult official substitution lists from Semtech Corporation for verified alternatives. Ensure any replacement matches the electrical specifications and pinout configuration. Generic equivalents may not provide identical performance characteristics or reliability standards.
