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Product Detailed Parameters
- Description：IC LED DRVR RGLTR PWM 32MA 26QFN
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR)
- Type：DC DC Regulator
- Topology：Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：6
- Voltage - Supply (Min)：4.2V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：32mA
- Frequency：2MHz
- Dimming：PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 105°C (TA)
- Mounting Type：Surface Mount
- Package / Case：26-WFQFN Exposed Pad
- Supplier Device Package：26-QFN/MLP (4x4)
- Grade：-
- Qualification：-
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Overview
The A8503GECTR-T is a specialized LED driver integrated circuit manufactured by Allegro MicroSystems. It features a boost DC-DC converter topology with six independent outputs, each capable of delivering up to 25mA. The device supports PWM dimming for brightness control and is housed in a compact 26-WFQFN package with an exposed pad (4x4 mm). Designed for backlight applications, it operates within a supply voltage range of 4.3V to 5.5V and functions reliably across a temperature range of -40°C to 105°C.
Feature Summary
- Integrates a boost converter with internal switches for efficient LED driving
- Provides six regulated output channels for multi-segment displays
- Supports pulse-width modulation (PWM) dimming for precise brightness control
Applications
- Backlight systems for electronic displays
- 72-segment LED display drivers
- Portable device illumination circuits
Procurement Notes
Verify the specific suffix GECTRT against official Allegro documentation to confirm package type and tape-and-reel specifications. Confirm current lifecycle status as sources indicate potential discontinuation. Ensure compatibility with existing PCB footprints for the 26-QFN/MLP package before procurement.
Selection Notes
Select this component for designs requiring a compact, multi-channel LED driver with integrated power conversion. Consider the 26-pin QFN footprint and thermal requirements due to the exposed pad. Verify that the input voltage range aligns with the system's power supply rails and that PWM dimming signals are compatible with the driver interface.
Part Context
This part belongs to the A8503 series of LED drivers from Allegro MicroSystems. It is designed to replace discrete solutions by integrating the boost converter and driver stages into a single IC. The family focuses on simplifying backlight design for mobile and portable electronics through high integration and small form factor packages.
Replacement Considerations
Check for direct substitutes within the A8503 series or newer Allegro LED driver families. Verify pinout compatibility and electrical parameters if considering cross-brand alternatives. Note that some distributors list this part as obsolete, so qualified replacement sourcing may be required.
