MAX1675

高效率、低电源电流、紧凑的、升压型DC-DC转换器

紧凑的低成本、低噪声设计:电感阻尼开关可有效降低纹波,改善EMI抑制


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说明

The MAX1674/MAX1675/MAX1676 compact, high-efficiency, step-up DC-DC converters fit in small µMAX packages. They feature a built-in synchronous rectifier, which improves efficiency and reduces size and cost by eliminating the need for an external Schottky diode. Quiescent supply current is only 16µA.

The input voltage ranges from 0.7V to VOUT, where VOUT can be set from 2V to 5.5V. Start-up is guaranteed from 1.1V inputs. The MAX1674/MAX1675/MAX1676 have a preset, pin-selectable output for 5V or 3.3V. The outputs can also be adjusted to other voltages using two external resistors.

All three devices have a 0.3Ω N-channel MOSFET power switch. The MAX1674 has a 1A current limit. The MAX1675 has a 0.5A current limit, which permits the use of a smaller inductor. The MAX1676 comes in a 10-pin µMAX package and features an adjustable current limit and circuitry to reduce inductor ringing.

MAX1674、MAX1675、MAX1676:典型工作电路 MAX1674、MAX1675、MAX1676:典型工作电路 放大+

关键特性

  • 94% Efficient at 200mA Output Current
  • 16µA Quiescent Supply Current
  • Internal Synchronous Rectifier (no external diode)
  • 0.1µA Logic-Controlled Shutdown
  • LBI/LBO Low-Battery Detector
  • Selectable Current Limit for Reduced Ripple
  • Low-Noise, Anti-Ringing Feature (MAX1676)
  • 8-Pin and 10-Pin µMAX Packages
  • Preassembled Evaluation Kit (MAX1676EVKIT)

应用

  • 1节至3节电池供电的手持设备
  • 手持式计算机
  • 医疗设备
  • 寻呼机
  • PDA
  • 射频标记
  • 无线电话

请查看具体的参数规格 Step-Up Switching Regulators (101)


Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
IOUT1
(A)
Switch TypeFeaturesPackage/PinsBudgetary
Price
minmaxminmaxmaxSee Notes
MAX1674 0.75.525.50.3InternalCurrent Limit
UMAX/8
$1.94 @1k
MAX1675 
UMAX/8
$2.35 @1k
MAX1676 
UMAX/10
$2.20 @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。

MAX1676EVKIT: MAX1676评估板

技术资料

设计指南 751 Linear Regulators in Portable Applications
产品可靠性报告: MAX1675.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
设计指南 751 Linear Regulators in Portable Applications
类型 编号 标题
评估板1879MAX1676EVKIT MAX1676评估板
评估板1879MAX1676_EVKIT MAX1676评估板