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5V或可调、低电压、升压型DC-DC控制器

1A升压型转换器,能够以极高效率提升2V输入

产品详情

主要特征

Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 1.8
VIN (V) (max) 16.5
VOUT1 (V) (min) 3
VOUT1 (V) (max) 16.5
IOUT1 (A) (max) 1
Switch Type External
Preset VOUT (V) 5
Output Adjust. Method Resistor
ICC (mA) (typ) 0.085
Shutdown Mode Supply Current (µA) (max) 5
# DC-DC Outputs 1
Switching Frequency (kHz) 300
Package/Pins PDIP/8
SOIC (N)/8
Budgetary
Price (See Notes)
2.22
缩小

简化框图

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参量

Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 1.8
VIN (V) (max) 16.5
VOUT1 (V) (min) 3
VOUT1 (V) (max) 16.5
IOUT1 (A) (max) 1
Switch Type External
Preset VOUT (V) 5
Output Adjust. Method Resistor
ICC (mA) (typ) 0.085
Shutdown Mode Supply Current (µA) (max) 5
# DC-DC Outputs 1
Switching Frequency (kHz) 300
Package/Pins PDIP/8
SOIC (N)/8
Budgetary
Price (See Notes)
2.22

主要特征

  • 1.8V to 16.5V Input Range
  • 85% Efficiency for 30mA to 1.5A Load Currents
  • Up to 10W Output Power
  • 110µA Max Supply Current
  • 5µA Max Shutdown Current
  • Preset 5V or Adjustable Output (3V to 16.5V)
  • Current-Limited PFM Control Scheme
  • Up to 300kHz Switching Frequency
  • Evaluation Kit Available

应用/用途

  • 电池供电应用
  • 高效DC-DC转换器
  • 便携式通信装置
  • LCD正偏置发生器

描述

The MAX608 low-voltage step-up controller operates from a 1.8V to 16.5V input voltage range. Pulse-frequency-modulation (PFM) control provides high efficiency at heavy loads, while using only 85µA (typical) when operating with no load. In addition, a logic-controlled shutdown mode reduces supply current to 2µA typical. The output voltage is factory-set at 5V or can be adjusted from 3V to 16.5V with an external resistor divider.

The MAX608 is ideal for two- and three-cell battery-powered systems. An operating frequency of up to 300kHz allows use with small surface-mount components.

The MAX608 operates in "bootstrapped" mode only (with the chip supply, OUT, connected to the DC-DC output). For a 12V output without external resistors, or for nonbootstrapped applications (chip supply connected to input voltage), refer to the pin-compatible MAX1771. The MAX608 is available in 8-pin DIP and SO packages.

简化框图

MAX608:典型工作电路 MAX608:典型工作电路 Zoom icon

支持和培训

在Maxim的知识库中搜索技术问题的答案

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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