MAX17575

4.5V–60V, 1.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation

60V Synchronous Buck Converter with Internal FETs Enables High Efficiency and Low Temperature Rise


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说明

The MAX17575 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 60V input. The converter can deliver up to 1.5A and generates output voltages from 0.9V up to 0.9 x VIN. The feedback (FB) voltage is accurate to within ±1.2% over -40°C to +125°C. Built-in compensation across the output-voltage range eliminates the need for external components. The MAX17575 features peak-current-mode control architecture and operates in fixed frequency forced PWM mode. The MAX17575 offers a low minimum on-time that allows high switching frequencies and a smaller solution size.

The device is available in a 12-pin (3mm × 3mm) TDFN package. Simulation models are available.

MAX17575: Functional (or Block) Diagram MAX17575: Functional (or Block) Diagram 放大+

关键特性

  • Reduces External Components and Total Cost
    • No Schottky-Synchronous Operation
    • Internal Compensation for Any Output Voltage
    • All-Ceramic Capacitors, Compact Layout
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4.5V to 60V Input
    • Adjustable 0.9V to 0.9 × VIN Output
    • Continuous 1.5A Current Over Temperature
    • 400kHz to 2.2MHz Adjustable Switching Frequency with External Synchronization
  • Reduces Power Dissipation
    • Peak Efficiency of 94%
    • Auxiliary Bootstrap LDO for Improved Efficiency
    • 4.65μA Shutdown Current
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup Mode Overload Protection
    • Adjustable Soft-Start
    • Built-In Output-Voltage Monitoring with RESET
    • Programmable EN/UVLO Threshold
    • Monotonic Startup into Prebiased Load
    • Overtemperature Protection
    • High Industrial -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range

应用

  • 基站电源
  • 配电稳压器
  • 通用负载点电源
  • 高压、单板系统
  • 工业控制电源
  • 壁式变压器稳压

请查看具体的参数规格 Step-Down Switching Regulators (409)


Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
IOUT1
(A)
(min)(max)(min)(max)
MAX17575 4.5600.91.5

Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

MAX17575EVKITA: Evaluation Kit for the MAX17575 in 3.3V Output-Voltage Application
MAX17575EVKITB: Evaluation Kit for the MAX17575 in 5V Output-Voltage Application
MAX17575EVKITBE: Evaluation Kit for the MAX17575 in 5V Output-Voltage Application

工具和模型

  • EE-Sim: MAX17575 设计和仿真
  • 申请可靠性报告: MAX17575 
    型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

    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。

    质量管理体系 >
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    类型 编号 标题
    评估板9452MAX17575EVKITB Evaluation Kit for the MAX17575 in 5V Output-Voltage Application
    评估板9451MAX17575EVKITA Evaluation Kit for the MAX17575 in 3.3V Output-Voltage Application
    评估板10369MAX17575EVKITBE Evaluation Kit for the MAX17575 in 5V Output-Voltage Application