MAX1626

5V/3.3V或可调、100%占空比、高效率、降压型DC-DC控制器

高效、低成本、降压控制器,非常适合1.5V CPU I/O供电


点击查看特定型号的库存状况。

说明

The MAX1626/MAX1627 step-down DC-DC controllers operate over a 2.6V to 16.5V input voltage range. The controllers deliver load current from 1mA to more than 2A. The MAX1626 has pin-selectable 3.3V and 5V outputs. The MAX1627 supports adjustable outputs from 1.3V to 16V.

A unique current-limited, pulse-frequency-modulation (PFM) control scheme operates up to 100% duty cycle, resulting in very low dropout voltage. This control scheme eliminates minimum load requirements and reduces supply current under light loads to 90µA (versus 2mA to 10mA for common pulse-width modulation controllers).

The devices are available in a 8-pin SOIC package (-40°C to +85°C) and dice (0°C to +70°C).

MAX1626、MAX1627:典型工作电路 MAX1626、MAX1627:典型工作电路 放大+

关键特性

  • Reduce External Components and Total Cost
    • 300KHz PWM Switching Reduces Component Size
    • Tiny Surface-Mount Inductor
  • Reduce Power Dissipation
    • > 90% Efficiency from 3mA to 2A Loads
    • Low Dropout Voltage
    • 100% Maximum Duty Cycle
  • Reduce Number of DC-DC Controllers to Stock
    • Wide 2.6V to 16.5V Input Voltage Options
    • Selectable 3.3V and 5V or Adjustable 1.3V to 16V Output Voltage Options
  • Reduce System Power Consumption
    • 90µA Max Quiescent Current
    • 1µA Max Shutdown Current
  • Operates Reliably in Adverse Environment
    • Soft-Start Limits Startup Current
    • Current-Limited Control Scheme
  • Increase Design Flexibility
    • External P-Channel MOSFET Allows Output Power of > 12.5W

应用

  • 5V至3.3V绿色PC应用
  • 电池供电应用
  • 手持式计算机
  • 高效降压转换器
  • 低成本笔记本电脑电源
  • 元件数最少的DC-DC转换器
  • PCMCIA电源
  • PDA及其它手持设备
  • 便携式终端

请查看具体的参数规格 Step-Down Switching Regulators (408)


Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeDC-DC OutputsOper. Freq.
(kHz)
Package/PinsBudgetary
Price
minmaxminmaxmaxSee Notes
MAX1626 316.53.35
3.3
5
Preset3External1300
SOIC (N)/8
$1.65 @1k
MAX1627 1.316-Resistor
SOIC (N)/8
$1.64 @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。

MAX1626EVKIT: MAX1626、MAX1627评估板
产品可靠性报告: MAX1626.pdf 
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1415MAX1626EVKIT MAX1626、MAX1627评估板