AL8861WT-7
Product Overview
Category: LED Driver Use: Powering and controlling LEDs Characteristics: - High efficiency - Wide input voltage range - Dimming capabilities - Over-temperature protection - Short-circuit protection - Under-voltage lockout Package: TO-252-5L (DPAK) Essence: Integrated circuit for LED driving Packaging/Quantity: Tape & Reel, 2500 units per reel
Specifications
- Input Voltage Range: 4.5V to 40V
- Output Current Range: Up to 1A
- Switching Frequency: 1MHz
- Dimming Control: Analog/PWM
- Operating Temperature Range: -40°C to +85°C
Detailed Pin Configuration
The AL8861WT-7 package consists of five pins:
- VIN: Input voltage pin
- GND: Ground pin
- DIM: Dimming control pin
- SW: Switching node pin
- VOUT: Output voltage pin
Functional Features
- High efficiency up to 95%
- Wide input voltage range allows for versatile applications
- Dimming control enables brightness adjustment
- Over-temperature protection ensures safe operation
- Short-circuit protection prevents damage to the driver
- Under-voltage lockout protects against low input voltage conditions
Advantages and Disadvantages
Advantages: - High efficiency results in energy savings - Wide input voltage range accommodates various power sources - Dimming control offers flexibility in lighting design - Comprehensive protection features enhance reliability
Disadvantages: - Limited output current range may not be suitable for high-power LED applications - Single-channel output restricts multi-color or RGB LED configurations
Working Principles
The AL8861WT-7 is a buck LED driver that converts the input voltage to a lower output voltage suitable for driving LEDs. It utilizes a high-frequency switching regulator to efficiently control the LED current. The dimming control pin allows for adjusting the LED brightness by varying the duty cycle of the PWM signal or applying an analog voltage.
Detailed Application Field Plans
The AL8861WT-7 LED driver finds applications in various fields, including:
- General lighting: Residential and commercial LED lighting fixtures
- Automotive lighting: Interior and exterior LED lighting in vehicles
- Display backlighting: LED backlighting for LCD panels and signage
- Industrial lighting: High-bay lighting, street lighting, and warehouse lighting
- Outdoor lighting: Landscape lighting, pathway lighting, and architectural lighting
Detailed and Complete Alternative Models
- AL8860WT-7: Similar specifications with a lower output current range (up to 500mA)
- AL8862WT-7: Similar specifications with a higher output current range (up to 1.5A)
- AL8863WT-7: Similar specifications with additional features like adjustable over-temperature protection threshold and external temperature sensing capability
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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av AL8861WT-7 i tekniska lösningar
Sure! Here are 10 common questions and answers related to the application of AL8861WT-7 in technical solutions:
Q1: What is AL8861WT-7? A1: AL8861WT-7 is a specific model of LED driver IC (integrated circuit) designed for driving LED lighting applications.
Q2: What is the input voltage range supported by AL8861WT-7? A2: The input voltage range supported by AL8861WT-7 is typically between 4.5V and 40V.
Q3: What is the maximum output current that AL8861WT-7 can provide? A3: AL8861WT-7 can provide a maximum output current of up to 1.5A.
Q4: Can AL8861WT-7 be used for dimming LED lights? A4: Yes, AL8861WT-7 supports PWM (Pulse Width Modulation) dimming, making it suitable for dimming LED lights.
Q5: Is AL8861WT-7 compatible with both constant current and constant voltage LED applications? A5: Yes, AL8861WT-7 is compatible with both constant current and constant voltage LED applications.
Q6: Does AL8861WT-7 have built-in over-temperature protection? A6: Yes, AL8861WT-7 has built-in over-temperature protection to ensure safe operation.
Q7: Can AL8861WT-7 operate in a wide temperature range? A7: Yes, AL8861WT-7 is designed to operate in a wide temperature range, typically from -40°C to +85°C.
Q8: What is the efficiency of AL8861WT-7? A8: AL8861WT-7 has high efficiency, typically above 90%, which helps in reducing power consumption.
Q9: Does AL8861WT-7 require any external components for operation? A9: Yes, AL8861WT-7 requires a few external components such as resistors and capacitors for proper operation.
Q10: Is AL8861WT-7 suitable for automotive lighting applications? A10: Yes, AL8861WT-7 is suitable for automotive lighting applications as it meets the necessary requirements and standards.
Please note that these answers are general and may vary depending on specific application requirements. It is always recommended to refer to the datasheet and consult with technical experts for accurate information.