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MAX1714

MAX1714A, MAX1714B

高速、降压型控制器，用于笔记本电脑

低成本、具有快速响应特性、精度为1%的电源控制器，用于下一代笔记本CPU核以及I/O供电

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概述

说明

The MAX1714 pulse-width modulation (PWM) controller provides the high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high-voltage batteries to generate low-voltage CPU core or chip-set/RAM supplies in notebook computers.

Maxim's proprietary Quick-PWM™ quick-response, constant-on-time PWM control scheme handles wide input/output voltage ratios with ease and provides 100ns "instant-on" response to load transients while maintaining a relatively constant switching frequency.

The MAX1714 achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs. Efficiency is further enhanced by an ability to drive very large synchronous-rectifier MOSFETs.

Single-stage buck conversion allows these devices to directly step down high-voltage batteries for the highest possible efficiency. Alternatively, two-stage conversion (stepping down the +5V system supply instead of the battery) at a higher switching frequency allows the minimum possible physical size.

The MAX1714 is intended for CPU core, chipset, DRAM, or other low-voltage supplies as low as 1V. The MAX1714A is available in a 20-pin QSOP package and includes overvoltage protection. The MAX1714B is available in a 16-pin QSOP package with no overvoltage protection. For applications requiring VID compliance or DAC control of output voltage, refer to the MAX1710/MAX1711 data sheet. For a dual output version, refer to the MAX1715 data sheet.
MAX1714、MAX1714A、MAX1714B：最简工作电路 MAX1714、MAX1714A、MAX1714B：最简工作电路 放大+

关键特性

  • Ultra-High Efficiency
  • No Current-Sense Resistor (Lossless ILIMIT)
  • Quick-PWM with 100ns Load-Step Response
  • 1% VOUT Accuracy Over Line and Load
  • 2.5V/3.3V Fixed or 1V to 5.5V Adjustable Output Range
  • 2V to 28V Battery Input Range
  • 200/300/450/600kHz Switching Frequency
  • Overvoltage Protection (MAX1714A)
  • Undervoltage Protection
  • 1.7ms Digital Soft-Start
  • Drives Large Synchronous-Rectifier FETs
  • 2V ±1% Reference Output
  • Power-Good Indicator

应用

  • 1.8V与2.5V I/O电源
  • 芯片组/RAM供电，电压可低至1V
  • CPU核电源
  • 笔记本电脑

参数规格

Part NumberVIN
(V)		VIN
(V)		VOUT1
(V)		VOUT1
(V)		Preset VOUT
(V)		Output Adjust. MethodIOUT1
(A)		Switch TypeSynchronous SwitchingDC-DC OutputsOper. Freq.
(kHz)		Package/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX1714A 22815.5
2.5
3.3
Preset
Resistor
8ExternalYes1600
SOIC(N)/8
$3.06 @1k
MAX1714B 
SOIC(N)/8
查看所有Step-Down Switching Regulators (389)
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。

设计资源


MAX1714AEVKIT: MAX1714A评估板
MAX1714BEVKIT: MAX1714B评估板

质量和环境数据

产品可靠性报告: MAX1714A.pdf 
申请可靠性报告: MAX1714B 
无铅封装的锡（Sn）晶须报告

质量与环境

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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    参考设计

    类型 编号 标题
    评估板2140MAX1714BEVKIT MAX1714B评估板
    评估板2089MAX1714AEVKIT MAX1714A评估板