The following provides reference designs for automotive LED systems. Use the MAX15005 to boost an 8V to 16V car battery to 21V to drive a string of 6 to 8 LEDs.
The key parameters of the reference design are listed below, along with the required detailed circuit schematic ( Figure 1 ) and bill of materials ( Table 1 ).
V IN : 8V to 16V (continuous), 40V (transient)
V LED+ supply voltage: 21V ±5% at 80mA (max)
V LED+ load range: 10V to 20V at 70mA
To LED：70mA ±5%
Brightness adjustment input: 400Hz, 50Ω, open collector
Brightness adjustment resolution: 3µs
Switching frequency: 385kHz
Operating temperature: -40°C to +125°C
More detailed image (PDF, 92kB)
Figure 1. MAX15005 reference design
All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.
It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.
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