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LTC1148HVIS
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Category:Voltage regulator
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Product Name:High efficiency synchronous step-down switching regulator
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Manufacturers:LINEAR
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Production Batch Number:10+
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Encapsulation:SOP14
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Stock Status:There is stock
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Stock Quantity:1090
- Minimum order quantity: 1
- Details:
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LTC1148HVIS
High efficiency synchronous step-down switching regulator
peculiarity
- 超高效率：95％以上的可能
- 出色的线路和负载瞬态响应的电流模式操作
- 三十年的输出电流保持高效率
- 在轻负载条件下的低160μA待机电流
- 逻辑控制的微功率停机：IQ
- Wide VIN范围：3.5V至20V *
- Short-circuit protection
- 非常低压差操作：100％占空比
- 高效率的同步FET开关
- 自适应非重叠栅极驱动
- 输出可以通过外部关机举行
- 在14引脚窄SO封装
description
此外，LTC ® 1148系列是一个同步降压开关稳压控制器，具有自动突发模式™操作在低输出电流时保持高效率的家庭。 这些设备驱动外部互补功率MOSFET，开关频率高达250kHz的使用恒定关断时间电流模式架构，电感器提供恒定的纹波电流。
通过一个外部电流检测电阻，工作电流水平是用户可编程的。 宽广的输入电压范围允许的操作，从3.5V *至18V（20V最大）。 恒定关断时间架构，提供低压差调节有限targetRDS（ON）的外部MOSFET和电感器和电流检测电阻的电阻。
LTC1148系列结合了最高的效率，在自动低电流操作模式的大电流的同步开关，所谓突发模式操作，从而降低开关损耗。 待机功耗降低到只有2MW（IOUT= 0）在VIN= 10V。 在突发模式操作的负载电流300mA的典型0毫安。
高达48V输入，LTC1149和LTC1159的数据表和应用笔记54。
* LTC1148L和LTC1148L 3.3只。
受美国专利，其中包括6580258，5481178。
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