LT1944-1 - LT1944-1是Dual Micropower Step-up DC/DC Converter

LT1944-1是LINEAR凌力尔特公司的一款LCD / CCD / OLED 偏置产品，LT1944-1是LT1944-1是Dual Micropower Step-up DC/DC Converter，本站介绍了LT1944-1的封装应用图解、特点和优点、功能等，并给出了与LT1944-1相关的LINEAR元器件型号供参考。

LT1944-1 - LT1944-1是Dual Micropower Step-up DC/DC Converter - LCD / CCD / OLED 偏置 - 电源管理 - 凌力尔特

LT1944-1 - Dual Micropower Step-up DC/DC Converter

LT1944-1 - Dual Micropower Step-up DC/DC Converter - Linear Technology（凌力尔特）

功能描述

The LT1944-1 is a dual micropower step-up DC/DC converter in a 10-pin MSOP package. One converter is designed with a 100mA current limit and a 400ns off-time; the other with a 175mA current limit and a 1.5μs off-time. The 1.5μs off-time converter is ideal for generating an output voltage that is close to the input voltage (i.e. a Li-Ion to 5V converter, or a two-cell to 3.3V converter). With an input voltage range of 1.2V to 15V,the LT1944-1 is ideal for a wide variety of applications. Both converters feature a quiescent current of only 20μA at no load, which further reduces to 0.5μA in shutdown. A current limited, fixed off-time control scheme conserves operating current, resulting in high efficiency over a broad range of load current. Tiny, low profile inductors and capacitors can be used to minimize footprint and cost in space-conscious portable applications.

特点

Low Quiescent Current:20μA in Active Mode<1μA in Shutdown Mode

Operates with VIN as Low as 1.2V

Low VCESAT Switches: 85mV at 70mA

Uses Small Surface Mount Components

High Output Voltage: Up to 34V

Tiny 10-Pin MSOP Package

应用

Small TFT LCD Panels

Handheld Computers

Battery Backup

Digital Cameras