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Product Detailed Parameters
- Description：IC PWR DRIVER N-CHAN 1:1 20SOIC
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR)
- Switch Type：Latched Driver
- Number of Outputs：8
- Ratio - Input:Output：1:01
- Output Configuration：Low Side
- Output Type：N-Channel
- Interface：Strobe, Parallel
- Voltage - Load：50V (Max)
- Voltage - Supply (Vcc/Vdd)：4.5V ~ 5.5V
- Current - Output (Max)：150mA
- Rds On (Typ)：5.5Ohm
- Input Type：Inverting
- Features：-
- Fault Protection：-
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：20-SOIC
- Package / Case：20-SOIC (0.295", 7.50mm Width)
- Grade：-
- Qualification：-
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Overview
The A6B273KLWTR is an eight-channel constant-current latched LED driver manufactured by Allegro MicroSystems. It operates with a supply voltage range of 4.5V to 5.5V and supports a maximum load voltage of 50V. The device features a typical on-resistance of 5.5 ohms and delivers a maximum output current of 150mA per channel. It utilizes a 20-SOIC surface-mount package with dimensions of 15.4 x 7.5 x 2.35mm. The component functions as a low-side switch with inverted input logic and parallel interface capabilities, designed for robust performance across an operating temperature range of -40°C to 125°C.
Feature Summary
- Eight-channel constant-current latched architecture for precise LED control
- Integrated low-side N-channel power switches
- Parallel interface support for simplified system integration
Applications
- LED lighting systems requiring constant current regulation
- Automotive illumination circuits
- Industrial display backlighting
Procurement Notes
Verify the specific suffix 'KLWTR' against official datasheets to confirm pinout and packaging details. Confirm RoHS compliance status as documentation indicates non-compliance for this variant. Check for obsolescence notices or last-time buy notifications from Allegro MicroSystems before finalizing procurement plans.
Selection Notes
Select this component when an eight-channel solution with integrated constant-current drive is required. Ensure the design accommodates the 4.5V to 5.5V supply range and the 5.5-ohm on-resistance characteristics. Verify that the 20-SOIC footprint fits the PCB layout constraints and that the thermal management strategy supports the specified operating temperature range.
Part Context
This part belongs to the A6B273 family of power drivers from Allegro MicroSystems. It serves as a specialized load driver within the company's portfolio of mixed-signal ICs. The device integrates multiple channels into a single compact package to reduce component count in complex lighting applications.
Replacement Considerations
Consult official Allegro MicroSystems documentation for confirmed substitute part numbers. Verify electrical compatibility and pinout alignment before considering alternatives.
