- Up to 96% efficiency
- Available in SO-8,8-pin DIP and LLP packages
- Computer design softwareThe LM267X makes it simple(版本6.0)
- Simple, easy to design
- Only 5 external components are required
- Utilizes off-the-shelf standard inductors
- 3.3V and 5.0V, 12V, and adjustable output versions
- Adjustable version output voltage range from 1.21V to 37V
- ± 1.5%, maximum output overvoltage line and load tolerance
- 保证500mA输出负载电流
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0.25 DMOS输出开关
- Wide input voltage range: 8V to 40V
- Internal oscillator at fixed frequency at 260 kHz
- TTL shutdown capability, low-power standby mode
- Thermal shutdown and current limit protection
illustrate
该系列稳压器LM2674与LMDMOS工艺制造的单片集成电路。 这些稳压器提供了所有的降压活性功能(降压)开关稳压器,驱动500 mA负载与出色的线路和负载调节电流。 These devices are available in fixed output voltages of 3.3V and 5.0V, 12V, and adjustable output versions.
需要最少的外部元件数量,这些稳压器简单易用,包括专利的内部频率补偿(专利号5382918和5514947)和固定频率振荡器。
该LM2674系列工作在260 kHz的开关频率,从而使小尺寸会比低频率开关调节器需要过滤元件。 Due to its extremely high efficiency ("90%), copper wire on the printed circuit board is the only heat dissipation required.
一个为与LM2674使用标准电感的家人都可以从几个不同的生产厂家。 This feature greatly simplifies the use of these advanced IC design supplies for switching power supplies. In addition, diode and capacitor selection guidelines designed to operate in switch-mode power supplies are included in the datasheet.
Other features include ± guaranteed 1.5% tolerance and ±10% oscillator frequency at the specified output voltage and input voltage of the output load. External shutdown is included with a typical standby current of 50μA. Includes output switch current limit and adequate protection against thermal shutdown during fault conditions.
为了简化LM2674降压稳压器设计过程中,存在电脑设计软件,LM267X化繁为简(版本6.0)。
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- 简单的高效率(“90%),降压(降压)稳压器
- 高效预稳压线性稳压器
- 正至负转换器
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