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高压、降压型DC-DC控制器,µMAX封装

高压(36V)降压型DC-DC控制器,µMAX封装

产品详情

主要特征

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 4.5
VIN (V) (max) 36
VOUT1 (V) (min) 1.25
VOUT1 (V) (max) 18
IOUT1 (A) (max) 10
Switch Type External
Output Adjust. Method Resistor
# DC-DC Outputs 1
Switching Frequency (kHz) 330
Package/Pins UMAX/10
Budgetary
Price (See Notes)
3.52
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参量

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 4.5
VIN (V) (max) 36
VOUT1 (V) (min) 1.25
VOUT1 (V) (max) 18
IOUT1 (A) (max) 10
Switch Type External
Output Adjust. Method Resistor
# DC-DC Outputs 1
Switching Frequency (kHz) 330
Package/Pins UMAX/10
Budgetary
Price (See Notes)
3.52

主要特征

  • High-Voltage Operation (up to 36VIN)
  • Efficiency > 90%
  • Output Power Capability Exceeds 50W
  • 10-Pin µMax Package
  • Low-Dropout Voltage
  • 100% (max) Duty Cycle
  • 90µA Quiescent Current
  • 4µA Shutdown Current
  • Up to 330kHz Switching Frequency
  • Output Voltage
    • 5V or 3.3V (MAX1744)
    • Adjustable 1.25V to 18V (MAX1745)
  • Current-Limited Control Scheme

应用/用途

  • 汽车电子
  • FireWire®/IEEE® 1394
  • 工业控制系统
  • 电信系统
  • 墙上适配器供电设备

描述

The MAX1744/MAX1745 are step-down DC-DC controllers capable of handling up to 36V inputs. These parts use a proprietary current-limited control scheme for excellent light- and full-load efficiency, while their 330kHz (max) switching frequency permits small external components for space-critical applications. Operation to 100% duty cycle permits the lowest possible dropout voltage.

The MAX1744 contains an internal feedback network that provides a pin-selectable output voltage of either 3.3V or 5V. The MAX1745 uses an external feedback network to generate an adjustable output voltage between 1.25V and 18V.

The MAX1744/MAX1745 are available in a space-saving 10-pin µMAX® package.

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MAX1744、MAX1745:典型工作电路 MAX1744、MAX1745:典型工作电路 Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心