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Product Detailed Parameters
- Description：IC LED DRVR RGLTR PWM 20MA 6MLP
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：2.5V
- Voltage - Supply (Max)：10V
- Voltage - Output：32V
- Current - Output / Channel：20mA
- Frequency：1.2MHz
- Dimming：PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：6-PowerWFDFN
- Supplier Device Package：6-MLP/DFN (2x3)
- Grade：-
- Qualification：-
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Overview
The A8431EEHTR-T is a single-output DC-DC boost LED driver IC manufactured by Allegro MicroSystems. It integrates an internal switch and operates within a supply voltage range of 2.5V to 10V, delivering a regulated output current of 20mA per channel. The device supports PWM dimming control and functions at a switching frequency of 1.2MHz. It provides a maximum output voltage of 32V and is housed in a compact 6-MLP/DFN (2x3) surface-mount package. The component is rated for an ambient operating temperature range of -40°C to 85°C.
Feature Summary
- Integrates an internal power switch for simplified external component count
- Supports precise PWM dimming control for brightness adjustment
- Utilizes a compact 6-pin MLP/DFN package for space-constrained designs
Applications
- LED backlighting systems
- Portable electronic device illumination
- Low-power indicator lighting circuits
Procurement Notes
Verify the specific suffix 'T' corresponds to the tape-and-reel packaging configuration required for automated assembly processes. Confirm that the 6-MLP/DFN footprint matches the target PCB layout dimensions. Ensure compatibility with the intended input voltage range of 2.5V to 10V for the specific application environment.
Selection Notes
Select this component when a single-channel boost topology is required for low-current LED applications. The integrated switch eliminates the need for external power transistors. Verify that the 1.2MHz switching frequency aligns with electromagnetic interference constraints. Ensure the thermal performance of the 6-MLP package meets the system's heat dissipation requirements under continuous operation.
Part Context
This part belongs to the A8431 family of LED drivers from Allegro MicroSystems. These devices are designed for efficient power management in portable electronics. The A8431 series typically offers high efficiency and compact form factors suitable for modern consumer devices requiring reliable LED illumination control.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical specifications against potential alternatives before implementation.
