Click here to ask about the production status of specific part numbers. MAX25250 Four Output Mini PMIC for Camera Applications General Description Benefits and Features The MAX25250 is a high-efficiency, four-output PMIC that Multiple Functions for Small Size integrates three DC-DC converters and a high-PSRR 1A Synchronous High-Voltage Buck Converter LDO, with OV/UV monitoring on all outputs. OUT1 is a Input Voltage Range 5V to 22V 1A high-voltage synchronous step-down converter oper- 3V to 4V, and 5V Output Voltage in 50mV steps ating from power over coax or car battery. OUT2 and Two Synchronous Low-Voltage Buck Converters OUT3 low-voltage synchronous step-down converters op- OUT2 and OUT3 Provide up to 1.2A erate from OUT1 and provide a 0.8V to 3.9875V output 0.8V to 3.9875V in 12.5mV steps voltage range. OUT2 can deliver 1.2A for high megapixel LDO for Camera Sensor 50dB at 1kHz. cameras and high-speed serializers. OUT3 can deliver 2.2MHz Operation 1.2A to power the secondary rails of the imager, serializer, RESET Output Open-Drain and MCU. OUT4 is a low-voltage, low-noise, high-PSRR High-Precision LDO for imager power. All buck converters achieve 1.5% 1.5% Output Voltage Accuracy output voltage accuracy over load, line, and temperature OV/UV Monitoring range. Overvoltage and undervoltage faults are monitored Robust for the Automotive Environment and errors are communicated through RESET. Current-Mode, Forced-PWM Operation This device features a 2.2MHz fixed-frequency PWM Overtemperature and Short-Circuit Protection mode for better noise immunity and load-transient re- 3.5mm x 3.5mm 20-Pin TQFN sponse. The high-frequency operation allows for the use -40C to +125C Grade 1 Automotive Temperature of all ceramic capacitors and minimizes external com- Range ponents. The programmable spread-spectrum frequency AEC-Q100 Qualified modulation minimizes radiated electromagnetic emis- sions. Integrated low-R switches improve efficiency Ordering Information appears at end of data sheet. DS(ON) at heavy loads and make layout simpler than discrete so- lutions. Sequencing through the use of EN23 and EN4 pins and factory-settable output voltages increases flexibility for dif- ferent image sensors and configurations. Other features include soft-start, overcurrent, and overtemperature pro- tection. The MAX25250 is specified for operation over the -40C to +125C automotive temperature range. Applications Surround-View Cameras Rear-View Cameras 19-100966 Rev 0 4/21MAX25250 Four Output Mini PMIC for Camera Applications Simplified Block Diagram MAX25250 HV LV BUCK CONVERTER OUT2 OUT1 BUCK CONVERTER (5-22VIN) LOGIC, INTERNAL EN23 LV SEQUENCING, OUT3 BUCK CONVERTER EN4 DIAGNOSTICS OV/UV LV RESET OUT4 COMPARATORS PMOS LDO www.maximintegrated.com Maxim Integrated 2