MAX16838AUP/V+

MAX16838AUP/V+ is an integrated, 2-channel, high-brightness LED driver with high-voltage boost and SEPIC controller. It integrates both DC to DC switching boost regulator and two 150mA current sinks. A current mode switching DC to DC controller provides necessary voltage to both strings of HB LEDs. The MAX16838 accepts a wide 4.75V to 40V input voltage range and directly withstands automotive load dump events. The wide input range allows powering HB LEDs for small to medium sized LCD displays in automotive and display backlight applications. An internal current mode switching DC to DC controller supports boost or SEPIC topologies and operates in an adjustable frequency range between 200kHz and 2MHz. The MAX16838 can be combined with MAX15054 to achieve buck-boost LED driver with two integrated current sinks. Suitable for automotive display backlights, LCD display backlights and automotive lighting applications.

• Integrated, 2-channel, 20mA to 150mA linear LED current sinks
• Boost or SEPIC power topologies for maximum flexibility
• Adaptive voltage optimization to minimize power dissipation in linear current sinks
• 5000:1 PWM dimming at 200Hz
• Open-drain fault indicator output and enable input
• LED open/short detection and protection, output overvoltage and overtemperature protection
• Programmable LED current foldback at lower input voltages
• Current-mode control switching stage with internal slope compensation
• 20 TSSOP-EP package
• Operating temperature range from -40°C to 125°C