MAX1763

1.5A、低噪声、1MHz、升压型DC-DC转换器

高性能、低噪声1MHz升压型DC-DC转换器


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说明

The MAX1763 is a high-efficiency, low-noise, step-up DC-DC converter intended for use in battery-powered wireless applications. This device maintains exceptionally low quiescent supply current (110µA) despite its high 1MHz operating frequency. Small external components and a tiny package make this device an excellent choice for small hand-held applications that require the longest possible battery life.

The MAX1763 uses a synchronous-rectified pulse-width-modulation (PWM) boost topology to generate 2.5V to 5.5V outputs from a wide range of input sources, such as one to three alkaline or NiCd/NiMH cells or a single Lithium-ion (Li+) cell. Maxim's proprietary Idle Mode™ circuitry significantly improves efficiency at light load currents while smoothly transitioning to fixed-frequency PWM operation at higher load currents to maintain excellent full-load efficiency. Low-noise, forced-PWM mode is available for applications that require constant-frequency operation at all load currents. The MAX1763 may also be synchronized to an external clock to protect sensitive frequency bands in communications equipment.

The MAX1763 includes an on-chip linear gain block that can be used to build a high-power external linear regulator or as a low-battery comparator. Soft-start and current limit functions permit optimization of efficiency, external component size, and output voltage ripple.

The MAX1763 is available in a space-saving 16-pin QSOP package or a high-power (1.5W) 16-pin TSSOP-EP package.
MAX1763:典型工作电路 MAX1763:典型工作电路 放大+

关键特性

  • Up to 94% Efficiency
  • +0.7V to +5.5V Input Voltage Range
  • 1.1V Guaranteed Startup Input Voltage
  • Up to 1.5A Output
  • Fixed 3.3V Output or Adjustable (2.5V to 5.5V)
  • 1MHz PWM Synchronous-Rectified Topology
  • 1µA Logic-Controlled Shutdown
  • Analog Gain Block for Linear-Regulator or Low-Battery Comparator
  • Adjustable Current Limit and Soft-Start
  • 1.5W TSSOP Package Available

应用

  • 数字无绳电话
  • 手持式仪表(PDA、掌上电脑)
  • 掌上电脑
  • PCS电话
  • 个人通信装置
  • 无线手机

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX1763EVKIT: MAX1763评估板
产品可靠性报告: MAX1763.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2508MAX1763EVKIT MAX1763评估板
评估板2508MAX1763_EVKIT MAX1763评估板