MAX25249B
Info : RECOMMENDED FOR NEW DESIGNS
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MAX25249B

Four-Output Mini PMICs for Camera Applications

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Industry's Smallest Power Solution for Automotive Cameras with Precision Monitoring

Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 14
1ku List Price Starting From $2.00
Features
  • Multiple Functions for Small Size
    • 1A Synchronous High-Voltage Buck Converter
      • Input Voltage Range 5V to 36V
      • 3V to 4V, and 5V Output Voltage in 50mV Steps
    • Two Synchronous Low-Voltage Buck Converters
      • OUT2 and OUT3 Provide up to 1.2A
      • 0.8V to 3.9875V in 12.5mV Steps
    • LDO for Camera Sensor; 50dB at 1kHz
    • 2.2MHz Operation
    • Active-Low RESET Output – Push-Pull or Open-Drain
  • High Precision
    • ±1.5% Output Voltage Accuracy
    • ±1.3% OV/UV Monitoring Accuracy
  • Diagnostics and Features
    • ASIL B Compliant
    • Redundant Reference
  • Robust for the Automotive Environment
    • Current-Mode, Forced-PWM Operation
    • Overtemperature and Short-Circuit Protection
    • 3.5mm x 3.5mm 20-Pin TQFN
    • -40°C to +125°C Grade 1 Automotive Temperature Range
    • AEC-Q100 Qualified
Additional Details
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The MAX25249/MAX25249B are high-efficiency, four-output PMICs that integrate three DC-DC converters and a high-PSRR LDO, with OV/UV monitoring on all outputs. OUT1 is a 1A high-voltage synchronous step-down converter operating from power over coax or car battery. OUT2 and OUT3 low-voltage synchronous step-down converters operate from OUT1 and provide a 0.8V to 3.9875V output voltage range. OUT2 can deliver 1.2A for high-megapixel cameras and high-speed serializers. OUT3 can deliver 1.2A to power the secondary rails of the imager, serializer, and MCU. OUT4 is a low-voltage, low-noise, high-PSRR LDO for imager power. All buck converters achieve ±1.5% output voltage accuracy over load, line, and temperature range. Overvoltage and undervoltage faults are monitored with ±1.3% accuracy around the set voltage, and errors are communicated through active-low RESET.

The devices feature a 2.2MHz fixed-frequency PWM mode for better noise immunity and load-transient response. The high-frequency operation allows for the use of all ceramic capacitors and minimizes external components. The programmable spread-spectrum frequency modulation minimizes radiated electromagnetic emissions. Integrated low-RDS(ON) switches improve efficiency at heavy loads and make layout simpler than discrete solutions.

Sequencing through the use of EN23 and EN4 pins and factory-settable output voltages increases flexibility for different image sensors and configurations. Other features include soft-start, overcurrent, and overtemperature protections. The MAX25249/MAX25249B are compliant with ASIL B ratings and are specified for operation over the -40°C to +125°C automotive temperature range.

Applications

  • Front/Rear/Surround View Camera
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). To request an NDA, click here.
Part Models 14
1ku List Price Starting From $2.00

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX25249BATPA/VY+
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MAX25249BATPA/VY+T
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MAX25249BATPB/VY+
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MAX25249BATPB/VY+T
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MAX25249BATPD/VY+
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MAX25249BATPD/VY+T
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MAX25249BATPE/VY+
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MAX25249BATPE/VY+T
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MAX25249BATPF/VY+
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MAX25249BATPF/VY+T
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MAX25249BATPJ/VY+
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MAX25249BATPJ/VY+T
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MAX25249BATPO/VY+
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MAX25249BATPO/VY+T
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

MAX25249BEVKIT

Evaluation Kit for the MAX25249/MAX25249B/MAX25250

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MAX25249BEVKIT

Evaluation Kit for the MAX25249/MAX25249B/MAX25250

Evaluation Kit for the MAX25249/MAX25249B/MAX25250

Features and Benefits

  • Meets Automotive Quality and Reliability Requirements
    • Wide Input Supply Range: 4.5V to 36V
    • -40°C to 125°C automotive temperature range
    • Overtemperature and short-circuit protection
  • High-Precision Output Voltages and ASIL Features
    • ASIL B Compliant
    • ±1.5% Accuracy for OUT1, OUT2, OUT3, and OUT4
    • ±1.3% Overvoltage- and Undervoltage-Monitoring Accuracy
  • Multiple Functions for Small Size
    • 1A Synchronous High-Voltage Buck Converter
    • Two Synchronous Low-Voltage Buck Converters (1.2A and 0.5A)
    • Precision LDO for Camera Sensor
    • 2.2 MHz Forced-PWM Operation with Spread Spectrum
    • 3.5mm x 3.5mm 20-pin TQFN package
  • Fully Assembled and Tested

Product Detail

The MAX25249 evaluation kit (EV kit) is a fully assembled and tested application circuit for the MAX25249/ MAX25249B high-efficiency four-output mini PMICs designed to power camera applications. The EV kit can test each of the outputs to full load. The output voltage accuracy is ±1.5% for all outputs within the normal operation input range of +4.5V to +36V. There is a active-low RESET signal to monitor overvoltage and undervoltage with ±1.3% accuracy. The MAX25249BEVKIT# is also available, and comes pre-installed with the MAX25249BATPB/VY+ IC.

Applications

  • Front/Rear/Surround View Camera

MAX25249EVKIT

Evaluation Kit for the MAX25249/MAX25249B/MAX25250

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MAX25249EVKIT

Evaluation Kit for the MAX25249/MAX25249B/MAX25250

Evaluation Kit for the MAX25249/MAX25249B/MAX25250

Features and Benefits

  • Meets Automotive Quality and Reliability Requirements
    • Wide Input Supply Range: 4.5V to 36V
    • -40°C to 125°C automotive temperature range
    • Overtemperature and short-circuit protection
  • High-Precision Output Voltages and ASIL Features
    • ASIL B Compliant
    • ±1.5% Accuracy for OUT1, OUT2, OUT3, and OUT4
    • ±1.3% Overvoltage- and Undervoltage-Monitoring Accuracy
  • Multiple Functions for Small Size
    • 1A Synchronous High-Voltage Buck Converter
    • Two Synchronous Low-Voltage Buck Converters (1.2A and 0.5A)
    • Precision LDO for Camera Sensor
    • 2.2 MHz Forced-PWM Operation with Spread Spectrum
    • 3.5mm x 3.5mm 20-pin TQFN package
  • Fully Assembled and Tested

Product Detail

The MAX25249 evaluation kit (EV kit) is a fully assembled and tested application circuit for the MAX25249/ MAX25249B high-efficiency four-output mini PMICs designed to power camera applications. The EV kit can test each of the outputs to full load. The output voltage accuracy is ±1.5% for all outputs within the normal operation input range of +4.5V to +36V. There is a active-low RESET signal to monitor overvoltage and undervoltage with ±1.3% accuracy. The MAX25249BEVKIT# is also available, and comes pre-installed with the MAX25249BATPB/VY+ IC.

Applications

  • Front/Rear/Surround View Camera

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