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
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