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1. Describe
AL8860WT-7 is a hysteresis mode DC/DC step-down converter, Designed to drive single or multiple series LEDs From a voltage source higher than the LED voltage. this The device can work with input power from 4.5V to 40V, and Provide TSOT25 with external adjustable output current up to 1A Package and 1.5A are used for MSOP-8EP package. Depends on the situation Voltage and external components, the converter can provide up to 40 Watt output power. AL8860 integrated power switch and high-end output Current detection circuit, set by external resistance Nominal average output current. Dimming can be done by applying an external control signal to CTRL pin. The CTRL pin will accept a DC voltage signal or Pulse width modulation signal. The soft start time can be adjusted by an external capacitor The CTRL pin is grounded. Apply a voltage of 0.2V or lower to CTRL This pin can turn off the output and put the device into the standby state Low current consumption state.
2. Feature
1. Low BOM quantity
2. Wide input voltage range: 4.5V to 40V
3. Output current up to 1.5A
4. Internal 40V NDMOS switch
5. Typical 5% output current accuracy
6. Single pin for on/off and brightness control by DC voltage or PWM signal
7. Recommended analog dimming range: 5% ~100%
8. Soft start
9. High efficiency (up to 97%)
10. LED short circuit protection
11. Inherent LED open circuit protection
12. Over temperature protection (OTP)
13. Up to 1MHz switching frequency
14. Lead-free TSOT25 and MSOP-8EP packages
15. Completely lead-free and fully RoHS compliant
16. Free of halogen and antimony. "Green" equipment
3. Application
1. LED retrofit for low-voltage halogen lamps
2. Low-voltage industrial lighting
3. Luminous signs
4. External drive with multiple channels
4. Pin configuration
5. Pin description
6. Package overview
