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AL8843SP-13
+StücklisteIC LED DRIVER RGLTR PWM 3A 8SO
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HerstellerDioden Incorporated
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Herstellerteil #AL8843SP-13
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Datenblatt AL8843SP-13 DataSheet
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Spezifikationen
| Attribut | Wert |
| Part Status | Active |
| Base Product Number | AL8843 |
| 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 |
| Current - Output / Channel | 3A |
| Frequency | 1MHz |
| Dimming | Analog, PWM |
| Applications | Backlight, Lighting, Signage |
| Operating Temperature | -40°C ~ 105°C (TA) |
| Mounting Type | Surface Mount |
| Package | 8-SOIC (0.154", 3.90mm Width) Exposed Pad |
| Supplier Device Package | 8-SO-EP |
| Packaging | Cut Tape (CT), Tape & Reel (TR) |
Übersicht
Description
Key features of the AL8843SP-13 include a high switching frequency, typically around 500kHz to 1MHz, which facilitates the use of smaller external components and reduces overall system size. It also includes features such as PWM and analog dimming, enabling precise control of the LED brightness. The device is equipped with protection features like overcurrent and thermal shutdown, enhancing its reliability and safety in various operating conditions. Overall, the AL8843SP-13 is ideal for applications in automotive, industrial, and general lighting where efficient and reliable LED driving is required.
Equivalent
1. LM3404 by Texas Instruments: A constant current buck regulator for driving high power LEDs.
2. LT3474 by Analog Devices: A DC/DC converter designed for LED applications.
3. A6211 by Allegro MicroSystems: A step-down regulator with integrated MOSFET for LED driving.
Ensure to check electrical characteristics and packaging to confirm equivalency.
Features
1. Wide Input Voltage Range: It supports an input voltage range from 5V to 60V, making it versatile for different power sources.
2. High Efficiency: The device offers high efficiency, typically over 95%, which helps in minimizing energy loss.
3. Adjustable Output Current: The output current can be set using an external resistor, allowing for flexibility in LED brightness control.
4. Dimming Capability: It supports both PWM and analog dimming, providing adaptability for different lighting needs.
5. Integrated Protection: The IC includes built-in protection features such as over-temperature, over-current, and LED open/short protection to ensure reliability and safety.
6. Thermal Management: It has thermal shutdown features to protect against overheating.
7. Compact Package: Offered in a SOP-8EP package, it is suitable for space-constrained applications.
These features make the AL8843SP-13 ideal for automotive, industrial, and general-purpose LED lighting solutions.
Pinout
1. SW (Pin 1): Switch output. Connect this pin to the inductor and freewheeling diode.
2. GND (Pin 2): Ground reference for the device.
3. CSN (Pin 3): Negative terminal of the current sense resistor.
4. CSP (Pin 4): Positive terminal of the current sense resistor.
5. CTRL (Pin 5): Control input for PWM dimming and analog dimming.
6. VREF (Pin 6): Reference voltage output.
7. VIN (Pin 7): Input voltage. Supply voltage for the device.
8. BST (Pin 8): Bootstrap. Provides the drive voltage to the high-side MOSFET.
The AL8843SP-13 is designed for driving high-brightness LEDs and supports a wide input voltage range. It is efficient, with integrated MOSFETs and PWM/analog dimming functionality, making it suitable for various LED applications.