peculiarity
在很宽的负载范围内的良好效益
非常低的输出电压纹波
小型，微型SO - 8封装（标准8脚SO封装足迹的一半）
1.09毫米包装高度
高达2 MHz的开关频率
0.8 V至14V工作电压
1.1V启动电压
1.24V - 14V的可调输出电压
2A负载电流，在输出电压低
0.17 内部MOSFET
稳压器效率高达90％
80μA的典型工作电流（到V DD引脚供应）
采用4mm x 4mm耐热增强LLP封装选项
illustrate
The LM2623 is a high-efficiency, general-purpose, step-up DC-DC switch-regulated battery-powered and low input voltage system. It accepts an input voltage between 0.8 and 14 volts and converts it into a regulated output voltage between 1.24 and 14 volts. The efficiency is up to 90%, which can be achieved with the LM2623.
To accommodate a large number of applications, the LM2623 allows designers to vary the performance optimization of the output voltage, operating frequency (300kHz to 2MHz), and duty cycle (17% to 90%) sections. The selected value can be fixed or can be ratioed with the battery voltage or input-output voltage. The LM2623 uses a very simple on/off supervision mode that produces good efficiency and stable operation over a wide operating range. It is usually regulated by skipping the switching cycle when it reaches the regulation limit (pulse frequency modulation).
Note: Please read the "Nonlinear Effects" and "Selecting the Right C3 Capacitors" sections of this datasheet in the Design Steps section, which makes any challenges to consider the front plate design/layout finalization.
For alternative solutions, see also: LM2700, LM2622, LM2731, LM2733, and LM2621.
apply
camera, pager and mobile phone
handheld computer, handheld computer, GPS device
White LED driver, TFT or scanned LCD display
Flash programming
Handheld instrumentation
1, 2, 3 or 4 alkaline battery systems
1, 2 or 3 cell lithium-ion battery systems