規格
| 屬性 | 價值 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| Type | AC DC Offline Switcher |
| Topology | Step-Up (Boost) |
| InternalSwitch(s) | Yes |
| NumberofOutputs | 1 |
| Voltage-Supply(Min) | 5V |
| Voltage-Supply(Max) | 36V |
| Voltage-Output | 36V |
| Current-Output/Channel | 2A (Switch) |
| Frequency | 1MHz |
| Dimming | Triac |
| OperatingTemperature | -40°C ~ 150°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) Exposed Pad |
概述
Description
The AL8821SP-13 is a high-efficiency, step-down DC/DC converter designed for LED driver applications. It is produced by Diodes Incorporated and is commonly used in lighting systems that require precise current regulation and exceptional efficiency. The device features a wide input voltage range, typically from 4.5V to 40V, making it suitable for various applications. The AL8821SP-13 can deliver up to 1A of output current, ensuring adequate power for medium to high-power LEDs.
One of its standout characteristics is the high switching frequency, which allows for the use of smaller external components, thereby reducing board space and overall system cost. It also provides features like adjustable output current, internal protection circuits (such as over-temperature and over-current protection), and a built-in switching transistor to minimize external component count.
This converter is ideal for use in both industrial and automotive environments due to its robust design and high-temperature tolerance. Its compact packaging options further make it suitable for space-constrained applications.
One of its standout characteristics is the high switching frequency, which allows for the use of smaller external components, thereby reducing board space and overall system cost. It also provides features like adjustable output current, internal protection circuits (such as over-temperature and over-current protection), and a built-in switching transistor to minimize external component count.
This converter is ideal for use in both industrial and automotive environments due to its robust design and high-temperature tolerance. Its compact packaging options further make it suitable for space-constrained applications.
Equivalent
The AL8821SP-13 is a step-down DC-DC converter from Diodes Incorporated, designed for LED applications. Equivalent products with similar functionality might include the LM3404 from Texas Instruments, the LT3518 from Analog Devices, and the MIC3203 from Microchip Technology. It's crucial to compare specifications such as input voltage range, output current capability, and efficiency to ensure suitability for your specific application.
Features
The AL8821SP-13 is a step-down DC-DC converter designed for efficient LED driving applications. Key features include:
1. Wide Input Voltage Range: It operates from 4.5V to 40V, accommodating various power sources.
2. High Efficiency: It can achieve efficiencies up to 95%, reducing heat generation and power loss.
3. Adjustable Output Current: The device supports adjustable LED current using an external resistor.
4. Integrated Power MOSFET: Incorporates a power N-channel MOSFET, minimizing the need for external components.
5. PWM Dimming Capability: Offers PWM dimming for precise brightness control of connected LEDs.
6. Thermal Shutdown: Features an over-temperature protection mechanism to prevent damage from overheating.
7. Current Limit Protection: Provides overcurrent protection to safeguard the device and connected LEDs.
8. Compact Package: Comes in a small package, optimizing board space for compact designs.
These features make the AL8821SP-13 suitable for applications like automotive lighting, general-purpose LED lighting, and other areas requiring efficient LED control.
1. Wide Input Voltage Range: It operates from 4.5V to 40V, accommodating various power sources.
2. High Efficiency: It can achieve efficiencies up to 95%, reducing heat generation and power loss.
3. Adjustable Output Current: The device supports adjustable LED current using an external resistor.
4. Integrated Power MOSFET: Incorporates a power N-channel MOSFET, minimizing the need for external components.
5. PWM Dimming Capability: Offers PWM dimming for precise brightness control of connected LEDs.
6. Thermal Shutdown: Features an over-temperature protection mechanism to prevent damage from overheating.
7. Current Limit Protection: Provides overcurrent protection to safeguard the device and connected LEDs.
8. Compact Package: Comes in a small package, optimizing board space for compact designs.
These features make the AL8821SP-13 suitable for applications like automotive lighting, general-purpose LED lighting, and other areas requiring efficient LED control.
Pinout
The AL8821SP-13 is a high efficiency, high current LED driver controller. It typically comes in an 8-pin SO-8 package. Its primary function is to drive high power LEDs with constant current, making it suitable for various lighting applications. It achieves high efficiency through a wide input voltage range and a low drop-out current sense voltage.
The pins have the following functions:
1. VIN: Input voltage supply.
2. CSN: Connect to current sense resistor.
3. COMP: Compensation pin for output stability.
4. GND: Ground reference point.
5. ISN: Negative input of the current sense amplifier.
6. SW: Switch node, connected to the inductor and diode.
7. VC: Output of the internal regulator.
8. DIM: PWM dimming control input.
The AL8821SP-13 is primarily used for applications requiring efficient and accurate LED current control, such as automotive lighting, backlighting, and general illumination.
The pins have the following functions:
1. VIN: Input voltage supply.
2. CSN: Connect to current sense resistor.
3. COMP: Compensation pin for output stability.
4. GND: Ground reference point.
5. ISN: Negative input of the current sense amplifier.
6. SW: Switch node, connected to the inductor and diode.
7. VC: Output of the internal regulator.
8. DIM: PWM dimming control input.
The AL8821SP-13 is primarily used for applications requiring efficient and accurate LED current control, such as automotive lighting, backlighting, and general illumination.
Manufacturer
The AL8821SP-13 is manufactured by Diodes Incorporated. Diodes Incorporated is a leading global provider of application-specific standard products within the broad discrete, logic, analog, and mixed-signal semiconductor markets. The company focuses on delivering high-quality products and solutions that meet the specific needs of a wide range of electronic systems, such as consumer electronics, computing, communications, industrial, and automotive markets. Diodes Incorporated is known for its high-volume manufacturing capacity and strategic positioning in the semiconductor industry.
Application
The AL8821SP-13 is a high-efficiency, continuous-mode inductive step-down converter, designed primarily for driving high-brightness LEDs. Its key application areas include LED lighting solutions such as residential, commercial, and industrial lighting. It is also suitable for use in automotive lighting, architectural lighting, and signage. Additionally, it can be used in battery-powered LED applications due to its wide input voltage range and high efficiency, which help in conserving battery life. The device's compact size and robust feature set make it ideal for applications requiring reliable and efficient LED driving.
Package
The AL8821SP-13 is typically available in an SO-8EP (Small Outline with Exposed Pad) package type, which is designed for efficient thermal performance in power applications.
