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Product Detailed Parameters
- Description：IC LED DRIVER PS 40MA 40QFN
- Series：THine®
- Mfr：THine Solutions, Inc.
- Package：Cut Tape (CT),Tray
- Type：Power Switch
- Topology：-
- Internal Switch(s)：Yes
- Number of Outputs：16
- Voltage - Supply (Min)：3V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：35V
- Current - Output / Channel：40mA
- Frequency：10MHz
- Dimming：-
- Applications：Backlight, Signage
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：40-VFQFN Exposed Pad
- Supplier Device Package：40-QFN (6x6)
- Grade：-
- Qualification：-
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Overview
The THL3503 is a 16-channel constant current sink LED driver IC manufactured by THine Solutions, Inc. It operates within a 40-QFN (6x6) surface-mount package and supports a switching frequency of 10MHz. The device provides dedicated registers for each channel to manage output states. Constant current values are configured via external resistors across three distinct output groups. This component is designed for high-efficiency power management in display applications.
Feature Summary
- Provides sixteen independent constant current sink outputs for precise LED control
- Features dedicated digital registers for individual channel configuration and monitoring
- Supports flexible current setting through external resistor networks across grouped outputs
Applications
- LED backlight systems
- Digital signage displays
Procurement Notes
Verify the specific ordering suffix, such as -DG or -B, against the manufacturer's official documentation to ensure correct package and tape-and-reel specifications. Confirm RoHS3 compliance status directly with the supplier. Request the latest datasheet revision to validate electrical characteristics and pinout assignments before integration into design schematics.
Selection Notes
Select this component when designing systems requiring sixteen individually addressable LED channels with fixed current sinking capabilities. Ensure the application voltage range aligns with the IC's operational limits. Consider the thermal performance of the exposed pad QFN package for heat dissipation requirements in dense PCB layouts.
Part Context
The THL3503 belongs to the THine Solutions PMIC family, specifically engineered for LED driving applications. It integrates power switch functionality with digital control interfaces. The device addresses the need for compact, high-density LED control solutions in modern display technologies where space constraints and channel count are critical design factors.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation. Verify compatibility with existing system architectures before considering alternative components from other manufacturers.
FAQ
How are the constant current values determined?
The constant current values for the three output groups are determined by external resistors connected to the device.
What is the maximum switching frequency?
The device supports a switching frequency of 10MHz.
