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稳压型、5V电荷泵DC-DC转换器

紧凑的、无电感、小外形、5V电池备份电源,封装尺寸为0.1平方英寸

产品详情

The MAX619 step-up charge-pump DC-DC converter delivers a regulated 5V ±4% output at 50mA over temperature. The input voltage range is 2V to 3.6V (two battery cells).

The complete MAX619 circuit fits into less than 0.1in² of board space because it requires only four external capacitors: two 0.22µF flying capacitors, and 10µF capacitors at the input and output.

Low operating supply current (150µA max) and low shutdown supply current (1µA max) make this device ideal for small, portable, and battery-powered applications. When shut down, the load is disconnected from the input.

The MAX619 is available in 8-pin DIP and SO packages.

主要特征

  • Regulated 5V ±4% Charge Pump
  • Output Current Guaranteed over Temperature
    • 20mA (VIN ≥ 2V)
    • 50mA (VIN, ≥ 3V)
  • 2V to 3.6V Input Range
  • No Inductors; Very Low EMI Noise
  • Ultra-Small Application Circuit (0.1in²)
  • Uses Small, Inexpensive Capacitors
  • 500kHz Internal Oscillator
  • Logic-Controlled 1µA Max Shutdown Supply Current
  • Shutdown Disconnects Load from Input
  • 8-Pin DIP and SO Packages

应用/用途

  • 5V闪存编程器
  • 电池供电微处理器系统
  • 紧凑的5V运放电源
  • 本地3.3V至5V转换器
  • 元件数最少的DC-DC转换器
  • 便携式仪表与手持终端
  • 从锂离子备用电池产生稳定的5V电压
  • 远端数据采集系统
  • 低压系统中MOSFET开关的驱动电压
  • 2节电池至5V转换
Parametric specs for Charge Pumps
Topology Doubler
Regulated
VIN (V) (min) 2
VIN (V) (max) 3.6
IOUT (A) (typ) 0.05
Unadj. VOUT (V) 5
ICC (mA) (max) 0.17
Switching Frequency (kHz) 500
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins PDIP/8
SOIC (N)/8
Budgetary
Price (See Notes)
$1.68 @1k

简化框图

MAX619:典型工作电路 MAX619:典型工作电路 Zoom icon

技术文档

设计与质量

单击下面的标题以查看详情页面

描述

The MAX619 evaluation kit (EV kit) is a 3V to 5V charge-pump DC-DC converter capable of driving loads up to 50mA. The circuit consists of the SOIC and four surface-mount capacitors on a single-layer printed circuit board.

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特征

  • 2.0V to 3.6V Input Range
  • Up to 50mA Output Current
  • 1µA Shutdown Current

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参量

主要特征

  • Regulated 5V ±4% Charge Pump
  • Output Current Guaranteed over Temperature
    • 20mA (VIN ≥ 2V)
    • 50mA (VIN, ≥ 3V)
  • 2V to 3.6V Input Range
  • No Inductors; Very Low EMI Noise
  • Ultra-Small Application Circuit (0.1in²)
  • Uses Small, Inexpensive Capacitors
  • 500kHz Internal Oscillator
  • Logic-Controlled 1µA Max Shutdown Supply Current
  • Shutdown Disconnects Load from Input
  • 8-Pin DIP and SO Packages

应用/用途

  • 5V闪存编程器
  • 电池供电微处理器系统
  • 紧凑的5V运放电源
  • 本地3.3V至5V转换器
  • 元件数最少的DC-DC转换器
  • 便携式仪表与手持终端
  • 从锂离子备用电池产生稳定的5V电压
  • 远端数据采集系统
  • 低压系统中MOSFET开关的驱动电压
  • 2节电池至5V转换

描述

The MAX619 step-up charge-pump DC-DC converter delivers a regulated 5V ±4% output at 50mA over temperature. The input voltage range is 2V to 3.6V (two battery cells).

The complete MAX619 circuit fits into less than 0.1in² of board space because it requires only four external capacitors: two 0.22µF flying capacitors, and 10µF capacitors at the input and output.

Low operating supply current (150µA max) and low shutdown supply current (1µA max) make this device ideal for small, portable, and battery-powered applications. When shut down, the load is disconnected from the input.

The MAX619 is available in 8-pin DIP and SO packages.

简化框图

MAX619:典型工作电路 MAX619:典型工作电路 Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索您所需的答案。

过滤搜索

Maxim专业的应用工程师团队也可以为您解答技术问题,请 访问Maxim的 支持中心