Data Sheet
MAX25252
Five-Output ASIL B PMIC with Accurate Temperature Monitoring for Next-Generation
Camera Sensors
General Description
Benefits and Features
The MAX25252 is a high-efficiency, five-output ASIL B PMIC
with three DC-DC converters, and two high-PSRR LDOs, with
OV/UV monitoring on all outputs. OUT1 is a 1A high-voltage,
synchronous step-down converter operating from power
over coax. OUT2 and OUT3 are low voltage synchronous
step-down converters and provide a 0.75V to 3.9375V output
voltage range. OUT2 and OUT3 can deliver up to 1.7A current
respectively for the high-megapixel cameras and high-speed
serializers. LDO4 and LDO5 deliver up to 0.4A and 0.9A of
current to power the secondary rails of the imager and a seri-
alizer. All outputs achieve ±1.5% output accuracy over load,
line, and temperature range. Overvoltage and undervoltage
for each output are monitored and their statuses are commu-
● Multiple Functions for Small Size
• 1A Synchronous High-Voltage Buck Converter
- Input Voltage Range 3.5V to 22V
- 2.5V to 5V Output Voltage in 100mV Steps
• Two Synchronous Low-Voltage Buck Converters
- Delivers up to 1.7A Current
- 0.75V to 3.9375V Output Voltage in 12.5mV Steps
• High-PSRR, Low-Voltage LDO for Camera Sensor
- Delivers up to 0.4A Current
- 0.75V to 3.9375V Output Voltage in 12.5mV Steps
• Low-Voltage LDO
- Delivers up to 0.9A Current
- 0.75V to 3.9375V Output Voltage in 12.5mV Steps
• 2.1MHz Operation
2
nicated through RESET and I C.
• RESET Output for OV/UV Detection and Other
Diagnostics
• SUP Voltage OV/UV Indication
The device features temperature monitoring with external
NTC. The IC accurately measures PCB temperature and flags
the temperature warning through RESET.
● High Precision for ASIL B Applications
• ±1.5% Output Voltage Accuracy (OUT1-OUT5)
• ±1% OV/UV Monitoring Accuracy
The device features a 2.1MHz fixed-frequency PWM mode
for better noise immunity and load transient response. The
2.1MHz frequency operation allows for the use of all ceramic
capacitors and minimizes external components. The pro-
grammable spread-spectrum frequency modulation minimizes
radiated electromagnetic emissions.
● High-Precision Temperature Monitoring
• 12-Bit ADC for Accurate Board Temperature
• ±0.096% Voltage Measurement Accuracy
2
● Robust for the Automotive Environment
• ASIL B Compliant
The I C programmable output voltages and sequencing
increases flexibility for different image sensors and config-
urations. Other features include soft-start, overcurrent, and
overtemperature protections.
• Current-Mode, Forced-PWM Operation
• Overtemperature and Short-Circuit Protection
• 5mm x 5mm, 28-Pin Side-Wettable TQFN
• -40°C to +125°C Automotive Temperature Range
• AEC-Q100 Qualified
Applications
● Surround-View Cameras
● Rear-View Cameras
● Side-View Cameras
● Forward-Looking Cameras
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Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices
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for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change
without notice. No license is granted by implicationor otherwise under any patent or patent rights of Analog Devices. Trademarks andregistered
trademarks are the property of their respective owners.
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