The MAX25203 joins ADI's family of automotive boost controllers, which includes the MAX25201 and MAX25202 single/dual boost controllers, both designed for low-power applications.
The MAX25203 controller starts with a battery input voltage of 4.5V to 42V and operates down to 1.8V after startup. It maintains an absolute maximum output voltage of up to 70V and features a low shutdown current of 5µA. Useful for generating backlight and Class D audio amplifier voltages, the MAX25203 offers I²C bus diagnostics, including die temperature, phase current monitoring, and optional true shutdown for improved system reliability. The output voltage is scalable via the PWM input or the I²C interface, and a sync function supports additional phases for higher-power systems.
Features of the MAX25203 Synchronous Boost Driver
- The factory-programmable gate drive voltage of 5.5V to 10V increases power density by reducing the MOSFET's RDS(on) loss for higher efficiency and lower cost.
- The programmable current limit suppression time allows short current spikes to occur without over-engineering the power supply, thus reducing the solution cost.
- Current rate accuracy of ±5 percent phase-to-phase reduces inductor size.
- The resistor-programmable switching frequency up to 2.1 MHz improves EMI and reduces the size and number of external components.
Price and Availability
- The MAX25203 is now available in a 32-conductor TQFN-CU package.
- The MAX25203EVKIT evaluation board is also now available.
Additional information
- Download the data sheet, order samples and evaluation boards
- Connect with ADI's digital isolation experts on EngineerZone™, an engineering community forum
