MAX20048

Automotive 40V, 55µA IQ, 2.2MHz, H-Bridge Buck-Boost Controller

Industry's Lowest IQ Buck-Boost Controller with Best in Class Transient Response


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说明

The MAX20048 is a current‐mode buck‐boost controller. The device operates with input voltages from 4.5V to 36V while using only 55μA quiescent current at no load. Once the start‐up conditions are satisfied, the device can operate over an extended input voltage range of 2V to 36V. The switching frequency is resistor programmable from 220kHz to 2.2MHz and can be synchronized to an external clock.

The device output voltage is available as 5V fixed or adjustable from 4V to 25V. The wide input voltage range, along with its ability to maintain constant output voltage during battery transients, makes the device ideal for automotive applications. In light load applications, a logic input (FSYNC) allows the devices to operate either in skip mode for reduced current consumption, or fixed‐frequency, forced‐ PWM mode to eliminate frequency variation and help minimize EMI. Protection features include cycle‐by‐cycle current limit, and thermal shutdown with automatic recovery.

The MAX20048 is available in a small 4mm x 4mm 24-pin TQFN-EP SW package.

关键特性

  • Meets Stringent Automotive Quality and Reliability Requirements
    • Operating VIN Range: 2V to 36V Allows Operation in Cold-Crank Conditions
    • Tolerates Input Transients to 40V • EN Pin Compatible from +3.3V to +40V
    • -40°C to +125°C Automotive Temperature Range
    • AEQ-100 Qualified
  • Efficient Solution in a Small Solutions Size
    • Skip Mode for Efficient Low Power Operation
    • Fixed 5V Output Voltage and Adjustable 4V to 25V
    • High Switching Frequency Allows Use of Small External Components
    • Small 4mm x 4mm 24-Pin SWTQFN Package
  • Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements
    • 55μA Quiescent Current When in Stand-By Mode
    • 10μA (max) Quiescent Current in Shutdown
  • EMI Mitigation to meet CISP25 Class 5 Requirements
    • 220kHz to 2.2MHz Operating Frequency
    • Fixed-Frequency PWM Mode
    • External Frequency Synchronization or SYNC OUTCapability (Selectable by OTP Option)
    • Spread Spectrum Can Be Enabled or Disabled for the IC by OTP Option

应用

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MAX20048EVKIT: Evaluation Kit for the MAX20048

质量和环境数据

申请可靠性报告: MAX20048 
无铅封装的锡(Sn)晶须报告

工具和模型

  • EE-Sim: MAX20048 设计和仿真
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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