开关稳压器 2A SIMPLE SWITCHER®, Step-Down Voltage Regulator with Precision Enable 8-SO PowerPAD -40 to 125
The LM22680 switching regulator provides all of the functions necessary to implement an efficient high-oltage step-down buck regulator using a minimum of external components. This easy to use regulator incorporates a 42-V N-channel MOSFET switch that can provide up to 2 A of load current. Excellent line and load regulation along with high efficiency > 90% are featured. Voltage mode control offers short minimum on-time, allowing the widest ratio between input and output voltages. Internal loop compensation means that the user is free from the tedious task of calculating the loop compensation components. Fixed 5-V output and adjustable output voltage options are available. The default switching frequency is set at 500 kHz, thus allowing for small external components and good transient response. In addition, the frequency can be adjusted over a range of 200 kHz to 1 MHz with a single external resistor. The internal oscillator can be synchronized to a system clock or to the oscillator of another regulator. A precision enable input allows simplification of regulator control and system power sequencing. In shutdown mode the regulator draws only 25 µA typical. An adjustable soft-start feature is provided through the selection of a single external capacitor. The LM22680 device also has built-in thermal shutdown, and current limiting to protect against accidental overloads.
The LM22680 device is a member of Texas Instruments SIMPLE SWITCHER® family. The SIMPLE SWITCHER concept provides for an easy-to-use complete design using a minimum number of external components and the WEBENCH design tool. TIs WEBENCH tool includes features such as external component calculation, electrical simulation, thermal simulation, and Build-It boards for easy design-in.
输出接口数 1
输出电压 1.285 V
输出电流 2 A
静态电流 3.40 mA
调节输出数 1
开关频率 500 kHz
拓扑结构 Buck
输入电压Max 42 V
输入电压Min 4.5 V
输出电压Max 37 V
输出电压Min 1.285 V
输出电流Max 2 A
工作温度Max 125 ℃
工作温度Min -40 ℃
输入电压 4.5V ~ 42V
安装方式 Surface Mount
引脚数 8
封装 SOIC-8
封装 SOIC-8
工作温度 -40℃ ~ 125℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
型号/品牌 | 代替类型 | 替代型号对比 |
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LM22680QMRX-ADJ/NOPB TI 德州仪器 | 当前型号 | 当前型号 |
LM22680QMR-ADJ/NOPB 德州仪器 | 功能相似 | LM22680QMRX-ADJ/NOPB和LM22680QMR-ADJ/NOPB的区别 |