MAX25229

The MAX25229 is a high-efficiency, eight-output, low-voltage PMIC. OUT1 is a 1.6A boost converter which can boost a 3.3V input supply to 5V at up to 500mA output current, while four synchronous step-down converters provide an output voltage range of 0.5V to 2.0V at up to 4A for 1-phase and 8A for 2-phase operation. Three 600mA PMOS LDOs operate from an input voltage range of 2.7V to 5.5V and provide an output voltage of 0.5V to 3.68V. All DC-DC converters achieve ±1% DC accuracy over load, line, and temperature range, while the LDOs achieve ±3% AC+DC accuracy.

This device features a 2.1MHz fixed-frequency PWM mode for better noise immunity and load-transient response. The high switching frequency operation allows for the use of all ceramic capacitors and minimizes external components. The spread-spectrum frequency modulation minimizes radiated electromagnetic emissions. Integrated low R_DS(ON) switches improve efficiency at heavy loads and simplify the layout with respect to discrete solutions. The MAXQ™ architecture minimizes output capacitance for each output by individually optimizing each output for the application requirements and eliminating process variations that reduce performance.

The device is offered with factory-preset output voltages. See the Ordering Information table for options.

APPLICATIONS

• Domain ECU
• Advanced Driver-Assistance Systems