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Overview
| Topology | Buck Converter |
| Input voltage | 4.5-40 V |
| Switching frequency | 1000 kHz |
| IC revision | 1 |
Description
The AL8861EV1, Figure 1, is a double sided evaluation board for the AL8861 step-down, or ‘buck’, LED driver with internal switch. The evaluation board is preset to drive 680mA into a single LED, or multiple LEDs, the maximum number of which depends on their total forward voltage drop and the supply voltage. (The maximum drive current of the AL8861 is 1000mA)
Features
- Low BOM Counts
- Wide Input Voltage Range: 4.5V to 40V
- Output Current up to 1.5A
- Internal 40V NDMOS Switch
- Typical 5% Output Current Accuracy
- Single Pin for On/Off and Brightness Control by DC Voltage or PWM Signal
- Recommended Analog Dimming Range: 5% ~100%
- Soft-Start
- High Efficiency (up to 97%)
- LED Short Protection
- Inherent Open-Circuit LED Protection
- Rs Short Protection
- Over Temperature Protection (OTP)
- Up to 1MHz Switching Frequency
- Pb-free TSOT25 and SOT89-5 Packages
Typical applications
- LED Retrofit for Low Voltage Halogen / Low Voltage Industrial Lighting / LED Backlighting / Illuminated Signs
- External Driver with Multiple Channels
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | ISAT(A) | RDC max.(mΩ) | fres(MHz) | Size | Version | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-PD SMT Power Inductor, 22 µH, 2.7 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance22 µH | Saturation Current2.7 A | DC Resistance133 mΩ | Self Resonant Frequency17.5 MHz | Size1030 | VersionPerformance | ||||
| WE-PD SMT Power Inductor, 33 µH, 2.2 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance33 µH | Saturation Current2.2 A | DC Resistance204 mΩ | Self Resonant Frequency13 MHz | Size1030 | VersionPerformance | ||||
| WE-PD SMT Power Inductor, 47 µH, 1.9 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance47 µH | Saturation Current1.9 A | DC Resistance248 mΩ | Self Resonant Frequency11.4 MHz | Size1030 | VersionPerformance | ||||
| WE-PD SMT Power Inductor, 68 µH, 1.6 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance68 µH | Saturation Current1.6 A | DC Resistance330 mΩ | Self Resonant Frequency9.4 MHz | Size1030 | VersionPerformance | ||||
| WE-PD SMT Power Inductor, 100 µH, 1.4 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance100 µH | Saturation Current1.4 A | DC Resistance478 mΩ | Self Resonant Frequency7.7 MHz | Size1030 | VersionPerformance | ||||
| WE-PD SMT Power Inductor, 150 µH, 1.1 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance150 µH | Saturation Current1.1 A | DC Resistance684 mΩ | Self Resonant Frequency6.1 MHz | Size1030 | VersionPerformance |