LM2678SX-5.0/NOPB 供应商
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LM2678SX-5.0/NOPB
品牌：TI 封装/批号：原厂原装/22+ -
LM2678SX-5.0/NOPB
品牌：TI(德州仪器) 封装/批号：TO-263-7/2022+
LM2678SX-5.0/NOPB 属性参数
- 制造商：National Semiconductor (TI)
- 输出电压：5 V
- 输出电流：5 A
- 开关频率：260 KHz
- 安装风格：SMD/SMT
- 封装 / 箱体：TO-263
- 封装：Reel
- 输出端数量：1
- 工厂包装数量：500
产品特性
- Efficiency Up to 92%
- Simple and Easy to Design Using Off-the-Shelf External Components
- 120-mΩ DMOS Output Switch
- 3.3-V, 5-V, and 12-V Fixed Output and Adjustable (1.2 V to 37 V) Versions
- 50-µA Standby Current When Switched OFF
- ±2% Maximum Output Tolerance Over Full Line and Load Conditions
- Wide Input Voltage Range: 8 V to 40 V
- 260-kHz Fixed Frequency Internal Oscillator
- –40 to 125°C Operating Junction Temperature Range
- Create a Custom Design Using the LM2678 With the WEBENCH® Power Designer
产品概述
The LM2678 series of regulators are monolithic integrated circuits which provide all of
the active functions for a step-down (buck) switching regulator capable of driving up to 5-A loads
with excellent line and load regulation characteristics. High efficiency (>90%) is obtained
through the use of a low ON-resistance DMOS power switch. The series consists of fixed output
voltages of 3.3 V, 5 V, and 12 V and an adjustable output version.The SIMPLE SWITCHER® concept provides
for a complete design using a minimum number of external components. A high fixed frequency
oscillator (260 kHz) allows the use of physically smaller sized components. A family of standard
inductors for use with the LM2678 are available from several manufacturers to greatly simplify the
design process. The LM2678 series also has built-in thermal shutdown, current limiting, and an ON/OFF
control input that can power down the regulator to a low 50-µA quiescent current standby condition.
The output voltage is ensured to a ±2% tolerance. The clock frequency is controlled to within a
±11% tolerance.
LM2678SX-5.0/NOPB 电路图
