500mA降压调节器
Description
The LM2674 series of regulators are monolithic integrated circuits built with a LMDMOS process. These regulators provide all the active functions for a step-down buck switching regulator, capable of driving a 500-mA load current with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version.
Requiring a minimum number of external components, these regulators are simple to use and include patented internal frequency compensation and a fixed frequency oscillator.
The LM2674 series operates at a switching frequency of 260 kHz, thus allowing smaller sized filter components than what is required with lower frequency switching regulators. Because of its very high efficiency >90%, the copper traces on the printed-circuit board are the only heat sinking required.
Features
• Efficiency up to 96%
• Available in 8-Pin SOIC, PDIP, and 16-Pin WSON Packages
• Simple and Easy to Design With
• Requires Only 5 External Components
• Uses Readily Available Standard Inductors
• 3-V, 5-V, 12-V, and Adjustable Output Versions
• Adjustable Version Output Voltage Range: 1.21 V to 37 V
• ±1.5% Maximum Output Voltage Tolerance Over Line and Load Conditions
• Ensured 500-mA Output Load Current
• 0.25-Ω DMOS Output Switch
• Wide Input Voltage Range: 8 V to 40 V
• 260-kHz Fixed Frequency Internal Oscillator
• TTL Shutdown Capability, Low Power Standby Mode
• Thermal Shutdown and Current Limit Protection
Applications
• Simple High Efficiency >90% Step-Down Buck Regulators
• Efficient Preregulator for Linear Regulators
• Positive-to-Negative Converters
输出接口数 1
输出电压 1.21V ~ 37V
输出电流 500 mA
针脚数 8
静态电流 2.50 mA
调节输出数 1
开关频率 260 kHz
拓扑结构 Buck
输入电压Max 40 V
输入电压Min 6.5 V
输出电压Max 37 V
输出电压Min 1.21 V
工作温度Max 125 ℃
电源电压 8 V
输入电压 6.5V ~ 40V
安装方式 Surface Mount
引脚数 8
封装 SOIC-8
封装 SOIC-8
工作温度 -40℃ ~ 125℃ TJ
产品生命周期 Active
包装方式 Tape & Reel TR
制造应用 电源管理
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC版本 2015/06/15
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
LM2674MX-ADJ/NOPB TI 德州仪器 | 当前型号 | 当前型号 |
LM2674M-ADJ 德州仪器 | 完全替代 | LM2674MX-ADJ/NOPB和LM2674M-ADJ的区别 |
LM2674MX-ADJ 德州仪器 | 完全替代 | LM2674MX-ADJ/NOPB和LM2674MX-ADJ的区别 |
LM2671MX-3.3 德州仪器 | 完全替代 | LM2674MX-ADJ/NOPB和LM2671MX-3.3的区别 |