MAX25252

Five-Output ASIL B PMIC with Accurate Temperature Monitoring for Next-Generation Camera Sensors

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概览

优势和特点
产品详情

优势和特点

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 12.5mVSteps
- High-PSRR, Low-Voltage LDO for Camera Sensor
  - Delivers up to 0.4A Current
  - 0.75V to 3.9375V Output Voltage in 12.5mVSteps
- Low-Voltage LDO
  - Delivers up to 0.9A Current
  - 0.75V to 3.9375V Output Voltage in 12.5mVSteps
- 2.1MHz Operation
- RESET Output for OV/UV Detection and OtherDiagnostics
- SUP Voltage OV/UV Indication

High Precision for ASIL B Applications
- ±1.5% Output Voltage Accuracy (OUT1-OUT5)
- ±1% OV/UV Monitoring Accuracy
High-Precision Temperature Monitoring
- 12-Bit ADC for Accurate Board Temperature
- ±0.096% Voltage Measurement Accuracy
Robust for the Automotive Environment
- ASIL B Compliant
- 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

产品详情

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 serializer. 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 communicated through RESET and I²C.

The device features temperature monitoring with external NTC. The IC accurately measures PCB temperature and flags the temperature warning through RESET.

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 programmable spread-spectrum frequency modulation minimizes radiated electromagnetic emissions.

The I²C programmable output voltages and sequencing increases flexibility for different image sensors and configurations. Other features include soft-start, overcurrent, and overtemperature protections.

APPLICATIONS

Surround-View Cameras
Rear-View Cameras
Side-View Cameras
Forward-Looking Cameras

产品分类

电源管理
- 多拓扑DC/DC

Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). To request an NDA, click here.

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产品生命周期推荐新设计使用

本产品已上市。数据手册包含所有最终性能规格和工作条件。ADI公司推荐新设计使用这些产品。

评估套件 (1)

MAX25252EVKIT

MAX25252 Evaluation Kit

MAX25252EVKIT

查看此评估套件详细信息

The MAX25252 evaluation kit (EV kit) provides a proven design to evaluate the MAX25252 five-output ASIL B PMIC. The EV kit can test each of the outputs to full load. I²C communication is used to configure the MAX25252 and monitor the IC status. A PC-to-I²C interface (such as the MAX32625PICO, which is mounted onto the EV kit) and software for reading and writing to I²C registers (such as the MAX25252EVKIT software) simplifies testing.