The MAX16814 evaluation kit (EV kit) demonstrates the MAX16814 high-brightness LED (HB LED) driver, integrating a step-up DC-DC preregulator followed by 4 channels of linear current sinks. The step-up preregulator switches at 350kHz and operates as a current-mode-controlled regulator capable of providing up to 600mA for the linear circuits. Each of the 4 linear channels can operate up to 40V and provide up to 150mA per channel. The 4 channels are configurable for 100mA or 150mA HB LED output current. The IC is a 20-pin TSSOP package with an exposed pad for enhanced thermal power dissipation.
The EV kit operates from a DC supply voltage of 6.5V up to the HB LED string forward voltage. The EV kit can withstand a 40V load-dump condition. The EV kit also demonstrates the IC features such as adaptive voltage optimization, undervoltage lockout (UVLO), overvoltage protection (OVP), cycle-by-cycle current limit, thermal shutdown, and digital PWM dimming operation using a digital PWM input signal to control the brightness of the HB LEDs. The EV kit also demonstrates a reference IC design for automotive applications.
Input Voltage from 6.5V Up to HB LED Forward Voltage
Demonstrates OVP (33V)
HB LED String Output Currents Configurable for 100mA or 150mA
Demonstrates UVLO (5V)
Demonstrates Open and Short LED Fault Protection and Detection
Demonstrates Cycle-by-Cycle Current Limit and Thermal-Shutdown Features
Demonstrates Adaptive Voltage Optimization
Proven PCB and Thermal Design
Fully Assembled and Tested
Architectural, Industrial, and Ambient Lighting
Automotive Displays LED Backlights
Automotive RCL, DRL, Front Position, and Fog Lights
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