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AL8861WT-7
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Product Detailed Parameters
- Description：IC LED DRVR RGLTR PWM 1A TSOT25
- 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：36V
- Current - Output / Channel：1A
- Frequency：1MHz
- Dimming：Analog, PWM
- Applications：Backlight, Lighting, Signage
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-5 Thin, TSOT-23-5
- Supplier Device Package：TSOT-25
- Grade：-
- Qualification：-
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Overview
The AL8861WT-7 is a monolithic Buck LED driver IC from Diodes Incorporated, designed for medium-voltage applications. It integrates an internal switch capable of delivering up to 1 A output current with a maximum input voltage of 40 V and output voltage of 36 V. Operating at a fixed frequency of 1 MHz, the device supports both analog and PWM dimming methods. It features open LED protection and operates within a temperature range of -40°C to +85°C. The component is housed in a compact TSOT-25-5 surface-mount package.
Feature Summary
- Integrates an internal power switch for simplified circuit design
- Supports dual-mode dimming via analog control and PWM signals
- Includes built-in open LED protection for enhanced system reliability
Applications
- LED lighting systems
- General illumination circuits
- Signage drivers
Procurement Notes
Verify the specific suffix 'WT-7' against the manufacturer's official datasheet to confirm the exact packaging configuration and tape-and-reel specifications. Ensure the ordering information matches the required TSOT-25-5 package variant. Cross-reference the part number with authorized distributors to validate authenticity and current production status before finalizing procurement decisions.
Selection Notes
Select this component for designs requiring a single-channel Buck topology with integrated switching capabilities. It is suitable for applications needing precise current regulation up to 1 A with high-frequency operation to minimize external passive component size. Consider the thermal performance and operating temperature limits when designing the PCB layout for sustained loads.
Part Context
This device belongs to the AL8861 series of LED drivers manufactured by Diodes Incorporated. The series focuses on efficient step-down conversion for driving LEDs in various lighting scenarios. The AL8861WT-7 specifically denotes the version packaged in the TSOT-25-5 form factor, distinguishing it from other pinout or package variations within the same functional family.
Replacement Considerations
The AL8861Y-13 serves as a related alternative within the same product family, offering similar functionality but housed in a SOT-89-5 package with a potentially different current rating. Verify pin compatibility and electrical parameters before substituting.
