MAX17550

60V, 25mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter with 22μA No-Load Supply Current

60V, Low IQ Synchronous Buck Regulator Enables High Efficiency


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说明

The MAX17550 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4V to 60V input. The converter can deliver up to 25mA and generates output voltages from 0.8V up to 0.9 x VIN. The feedback (FB) voltage is accurate to within ±1.75% over -40°C to +125°C.

The MAX17550 uses peak-current-mode control. The device can be operated in pulse-width modulation (PWM) or pulse-frequency modulation (PFM) modes.

The device is available in a 10-pin (3mm x 2mm) TDFN and 10-pin (5mm x 3mm) µMAX® packages. Simulation models are available.
MAX17550: Typical Application Circuit MAX17550: Typical Application Circuit 放大+

关键特性

  • Reduces External Components and Total Cost
    • No Schottky—Synchronous
    • Internal Compensation for Any Output Voltage
    • Built-In Soft-Start
    • All-Ceramic Capacitors, Compact Layout
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4V to 60V Input
    • Adjustable 0.8V up to 0.9 x VIN Output
    • 100kHz to 2.2MHz Adjustable Switching Frequency with External Synchronization
  • Reduces Power Dissipation
    • 22μA Quiescent Current
    • Peak Efficiency > 90%
    • PFM Enables Enhanced Light-Load Efficiency
    • 1.2μA Shutdown Current
  • Operates Reliable in Adverse Environments
    • Peak Current-Limit Protection
    • Built-In Output-Voltage Monitoring Active-Low RESET
    • Programmable EN/UVLO Threshold
    • Monotonic Startup into Prebiased Load
    • Overtemperature Protection
    • High Industrial -40℃ to +125℃ Ambient Operating Temperature Range / -40℃ to +150℃ Junction Temperature Range

应用

  • 电池供电设备
  • 替代高压LDO
  • HVAC与楼宇控制
  • 工业传感器和过程控制

请查看具体的参数规格 Step-Down Switching Regulators (404)


Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
IOUT1
(A)
Switch TypeSynchronous SwitchingOper. Freq.
(kHz)
FeaturesDesign ToolsPackage/PinsBudgetary
Price
minmaxminmaxmaxSee Notes
MAX17550 4.5600.8540.025InternalYes2200
Adjustable Freq.
CISPR
Current Limit
Fixed Freq./PWM
Reset Output
EE-Sim
TDFN/10
UMAX/10
$1.10 @1k

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。

MAX17550AUBEVKIT: MAX17550评估板(µMAX)
MAX17550ATBEVKIT: MAX17550评估板(TDFN)

工具和模型

  • EE-Sim: MAX17550 设计和仿真
  • MAX17550 SIMPLIS Schematic
  • MAX17550 SIMPLIS Schematic
  • 申请可靠性报告: MAX17550 
    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。

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    类型 编号 标题
    评估板8747MAX17550ATBEVKIT MAX17550评估板(TDFN)
    评估板8746MAX17550AUBEVKIT MAX17550评估板(µMAX)