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Product Detailed Parameters
- Description：HV ASIL-B CAMERA PMIC
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tube
- Topology：Step-Down (Buck) Synchronous (3), Linear (LDO) (1)
- Number of Outputs：4
- Frequency - Switching：2.2MHz
- Voltage/Current - Output 1：3V ~ 4V, 5V, 1A
- Voltage/Current - Output 2：0.8V ~ 3.9875V, 1.2A
- Voltage/Current - Output 3：0.8V ~ 3.9875V, 1.2A
- w/LED Driver：No
- w/Supervisor：No
- w/Sequencer：Yes
- Voltage - Supply：5V ~ 36V
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount, Wettable Flank
- Package / Case：20-WFQFN Exposed Pad
- Supplier Device Package：20-WETQFN (3.5x3.5)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The MAX25249ATPE/VY+ is an ASIL-B Mini PMIC for camera applications. It integrates three DC-DC converters and a high-PSRR LDO with overvoltage/undervoltage monitoring on all outputs. OUT1 is a 1A synchronous step-down converter operating from power-over-coax or car battery. OUT2 and OUT3 are low-voltage synchronous step-down converters providing 0.8V to 3.9875V output voltage ranges, delivering up to 1.2A each. OUT4 is a low-noise LDO for imager power. All buck converters achieve ±1.5% output voltage accuracy. The device features a 2.2MHz fixed-frequency PWM mode and operates within the -40°C to +125°C automotive temperature range.
Feature Summary
- Integrates four power rails including three synchronous buck converters and one high-PSRR LDO in a compact package.
- Provides comprehensive fault monitoring with overvoltage and undervoltage detection on all outputs.
- Features programmable spread-spectrum frequency modulation to minimize radiated electromagnetic emissions.
- Compliant with ASIL-B safety ratings for automotive functional safety requirements.
Applications
- Surround-view cameras
- Rear-view cameras
Procurement Notes
Verify the specific suffix 'E' against official Analog Devices documentation to confirm pinout or thermal pad variations compared to standard variants. Ensure the component meets ASIL-B requirements for your target application. Confirm availability through authorized distributors as lead times may vary. Validate that the 20-WETQFN package matches your PCB footprint design constraints.
Selection Notes
Select this part when designing camera systems requiring integrated power management with high noise immunity. The 2.2MHz switching frequency allows for smaller external components. Consider the 1.2A capability of OUT2 and OUT3 for powering high-megapixel sensors and serializers. Verify input voltage compatibility with power-over-coax or battery sources for OUT1.
Part Context
This component belongs to the MAX25249 family of mini PMICs designed specifically for automotive camera applications. It consolidates multiple power stages into a single solution to reduce board space. The family includes variants like MAX25249BATPF/VY+ and MAX25249BATPA/VY+, which share similar electrical characteristics but may differ in packaging or specific configuration options.
Replacement Considerations
MAX25249BATPF/VY+
FAQ
What is the maximum current output for OUT2 and OUT3?
OUT2 and OUT3 can each deliver up to 1.2A, suitable for powering high-megapixel cameras and high-speed serializers.
How does the device manage electromagnetic interference?
It features programmable spread-spectrum frequency modulation to minimize radiated electromagnetic emissions while maintaining a 2.2MHz fixed-frequency PWM mode for better noise immunity.
