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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

产品详情

主要特征

应用/用途

Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 0.7
VIN (V) (max) 5.5
VOUT1 (V) (min) 2.5
VOUT1 (V) (max) 5.5
IOUT1 (A) (max) 1.5
Switch Type Internal
Preset VOUT (V) 3.3
Output Adjust. Method Preset
Resistor
Synchronous Switching? Yes
ICC (mA) (typ) 0.11
Shutdown Mode Supply Current (µA) (typ) 1
Shutdown Mode Supply Current (µA) (max) 10
# DC-DC Outputs 1
Switching Frequency (kHz) 1000
Package/Pins QSOP/16
TSSOP/16
Budgetary
Price (See Notes)
3.11
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参量

Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 0.7
VIN (V) (max) 5.5
VOUT1 (V) (min) 2.5
VOUT1 (V) (max) 5.5
IOUT1 (A) (max) 1.5
Switch Type Internal
Preset VOUT (V) 3.3
Output Adjust. Method Preset
Resistor
Synchronous Switching? Yes
ICC (mA) (typ) 0.11
Shutdown Mode Supply Current (µA) (typ) 1
Shutdown Mode Supply Current (µA) (max) 10
# DC-DC Outputs 1
Switching Frequency (kHz) 1000
Package/Pins QSOP/16
TSSOP/16
Budgetary
Price (See Notes)
3.11

主要特征

  • 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/用途

  • 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

描述

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.

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MAX1763:典型工作电路 MAX1763:典型工作电路 Zoom icon

技术文档

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