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AL8841QWT-7
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Product Detailed Parameters
- Description：LED MV INT SWITCH TSOT25 T&R 3K
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Step-Down (Buck)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：40V
- Voltage - Output：40V (Switch)
- Current - Output / Channel：1A
- Frequency：1MHz
- Dimming：Analog, PWM
- Applications：-
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-5 Thin, TSOT-23-5
- Supplier Device Package：TSOT-25
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The AL8841QWT-7 is an automotive-grade, single-output Buck topology LED driver IC from Diodes Incorporated. It operates as a hysteresis mode DC-DC step-down converter with an input voltage range of 4.5 V to 40 V and a maximum output current of 1 A. The device features PWM dimming capability and functions within a temperature range of -40°C to +125°C. It utilizes a TSOT-25-5 package and operates at a switching frequency of 250 kHz.
Feature Summary
- Hysteresis mode DC-DC step-down conversion for efficient LED driving
- Automotive qualification compliant with AEC-Q100 standards
- Integrated internal power switch simplifies circuit design
- Supports Pulse Width Modulation (PWM) dimming control
Applications
- Automotive exterior lighting systems
- Automotive interior illumination modules
- Single or multiple series-connected LED arrays in vehicles
Procurement Notes
Verify the specific suffix 'QWT-7' against official Diodes Incorporated documentation to confirm tape-and-reel quantities and packaging specifications. Ensure the component meets required automotive reliability standards for the intended application environment. Cross-reference datasheet revisions to validate parameter consistency before integration into final designs.
Selection Notes
Select this component for applications requiring a compact, non-isolated Buck converter solution for automotive LED loads. The TSOT-25-5 package suits space-constrained PCB layouts. Verify that the load current requirements do not exceed the 1 A limit and that the input voltage remains within the specified 4.5 V to 40 V operational window.
Part Context
This part belongs to the AL8841Q family of automotive LED drivers. It shares functional similarities with other members like the AL8861 but differs in specific current ratings and feature sets. The 'Q' designation indicates automotive grade qualification, while 'WT-7' specifies the surface-mount TSOT-25 package and reel configuration.
Replacement Considerations
The AL8861WT-7 is a related component in the same product family. Verify compatibility regarding output current capabilities and pinout configurations before substitution. Consult official cross-reference guides to ensure electrical parameters match the original design requirements.
