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28V、低功耗、高压、boost或反相DC-DC转换器

产品详情

主要特征

Parametric specs for Inverting Switching Regulators
VIN (V) (min) 2.7
VIN (V) (max) 5.5
VOUT1 (V) (min) -28
VOUT1 (V) (max) 28
IOUT1 (A) (max) 0.5
Switch Type Internal
Output Adjust. Method Resistor
# DC-DC Outputs 1
Alternate Topology Step-Up
Switching Frequency (kHz) 300
Package/Pins SOIC (N)/8
Budgetary
Price (See Notes)
3.72
Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 2.7
VIN (V) (max) 5.5
VOUT1 (V) (max) 28
IOUT1 (A) (max) 0.5
Switch Type Internal
Output Adjust. Method Resistor
ICC (mA) (typ) 0.08
Shutdown Mode Supply Current (µA) (typ) 0.04
Shutdown Mode Supply Current (µA) (max) 1
# DC-DC Outputs 1
Switching Frequency (kHz) 300
Package/Pins SOIC (N)/8
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参量

Parametric specs for Inverting Switching Regulators
VIN (V) (min) 2.7
VIN (V) (max) 5.5
VOUT1 (V) (min) -28
VOUT1 (V) (max) 28
IOUT1 (A) (max) 0.5
Switch Type Internal
Output Adjust. Method Resistor
# DC-DC Outputs 1
Alternate Topology Step-Up
Switching Frequency (kHz) 300
Package/Pins SOIC (N)/8
Budgetary
Price (See Notes)
3.72
Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 2.7
VIN (V) (max) 5.5
VOUT1 (V) (max) 28
IOUT1 (A) (max) 0.5
Switch Type Internal
Output Adjust. Method Resistor
ICC (mA) (typ) 0.08
Shutdown Mode Supply Current (µA) (typ) 0.04
Shutdown Mode Supply Current (µA) (max) 1
# DC-DC Outputs 1
Switching Frequency (kHz) 300
Package/Pins SOIC (N)/8

主要特征

  • Internal, 500mA, 28V N-Channel Switch (No External FET Required)
  • Generates Positive or Negative Output Voltages
  • 80µA Supply Current
  • 1µA Max Shutdown Current
  • Up to 300kHz Switching Frequency
  • Adjustable Current Limit Allows Use of Small, Inexpensive Inductors
  • 8-Pin SO Package

应用/用途

  • 2节和3节电池供电应用
  • 高效DC-DC升压转换器
  • 掌上电脑
  • LCD正或负偏置发生器
  • 变容调谐二极管偏置

描述

The MAX629 low-power DC-DC converter features an internal N-channel MOSFET switch and programmable current limiting. It is designed to supply positive or negative bias voltages up to ±28V from input voltages in the 0.8V to VOUT range, and can be configured for boost, flyback, and SEPIC topologies.

The MAX629's current-limited pulse-frequency-modulation (PFM) control scheme provides high efficiency over a wide range of load conditions. An internal, 0.5A N-channel MOSFET switch reduces the total part count, and a high switching frequency (up to 300kHz) allows for tiny surface-mount magnetics.

The MAX629's combination of low supply current, logic-controlled shutdown, small package, and tiny external components makes it an extremely compact and efficient high-voltage biasing solution that's ideal for battery-powered applications. The MAX629 is available in an 8-pin SO package.

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Technical Docs

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