Description:Drives 6 LED channels; Independent current on 3 pairs of LEDs; I²C serial interface programming; Fixed High Frequency Operation 1MHz; “Zero” Current Shutdown Mode; Fractional pump 1x/1.5x; Low noise input ripple; Power efficiency up to 91%; Adjustable current to 32 mA in 0.5 mA steps; Soft start and current limiting; Short circuit protection; Thermal shutdown protection
A recommended PCB layout for the CAT3626HV4-GT2 involves placing the device near a thermal pad or a heat sink, and using thermal vias to dissipate heat. The datasheet provides a recommended land pattern, but a good rule of thumb is to keep the thermal pad as large as possible and use multiple vias to the ground plane.
To ensure the CAT3626HV4-GT2 is properly biased, make sure to follow the recommended biasing scheme outlined in the datasheet. This typically involves connecting the EN pin to a voltage source, and ensuring the input voltage is within the recommended range. Additionally, ensure that the output capacitor is properly sized to handle the output current.
Exceeding the maximum junction temperature of the CAT3626HV4-GT2 can lead to reduced lifespan, decreased performance, and potentially even device failure. It's essential to ensure the device is properly cooled and operated within the recommended temperature range to prevent overheating.
The CAT3626HV4-GT2 is a commercial-grade device, but onsemi does offer automotive-grade and high-reliability versions of the device. Engineers should consult with onsemi or a qualified distributor to determine the suitability of the device for their specific application.
To troubleshoot issues with the CAT3626HV4-GT2, start by verifying the input voltage, output voltage, and output current are within the recommended ranges. Check the PCB layout for any thermal or electrical issues, and ensure the device is properly biased. If issues persist, consult the datasheet or contact onsemi support for further assistance.
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CAT3626HV4-GT2 Overview
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