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LM78S40J PDF预览

LM78S40J

更新时间: 2024-11-23 19:52:03
品牌 Logo 应用领域
美国国家半导体 - NSC 开关
页数 文件大小 规格书
10页 289K
描述
IC 1.5 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, CDIP16, CERAMIC, DIP-16, Switching Regulator or Controller

LM78S40J 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
包装说明:DIP, DIP16,.3Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.62模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:CURRENT-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:40 V最小输入电压:2.5 V
JESD-30 代码:R-GDIP-T16JESD-609代码:e0
长度:19.43 mm功能数量:1
端子数量:16最高工作温度:125 °C
最低工作温度:-55 °C最大输出电流:1.5 A
封装主体材料:CERAMIC, GLASS-SEALED封装代码:DIP
封装等效代码:DIP16,.3封装形状:RECTANGULAR
封装形式:IN-LINE峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:5.08 mm
子类别:Switching Regulator or Controllers最大供电电流 (Isup):5.5 mA
表面贴装:NO切换器配置:SINGLE
最大切换频率:100 kHz技术:BIPOLAR
温度等级:MILITARY端子面层:Tin/Lead (Sn/Pb)
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:7.62 mmBase Number Matches:1

LM78S40J 数据手册

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April 1998  
LM78S40  
Universal Switching Regulator Subsystem  
General Description  
Features  
n Step-up, step-down or inverting switching regulators  
n Output adjustable from 1.25V to 40V  
n Peak currents to 1.5A without external transistors  
n Operation from 2.5V to 40V input  
The LM78S40 is a monolithic regulator subsystem consisting  
of all the active building blocks necessary for switching regu-  
lator systems. The device consists of a temperature com-  
pensated voltage reference, a duty-cycle controllable oscilla-  
tor with an active current limit circuit, an error amplifier, high  
current, high voltage output switch, a power diode and an  
uncommitted operational amplifier. The device can drive ex-  
ternal NPN or PNP transistors when currents in excess of  
1.5A or voltages in excess of 40V are required. The device  
can be used for step-down, step-up or inverting switching  
regulators as well as for series pass regulators. It features  
wide supply voltage range, low standby power dissipation,  
high efficiency and low drift. It is useful for any stand-alone,  
low part count switching system and works extremely well in  
battery operated systems.  
n Low standby current drain  
n 80 dB line and load regulation  
n High gain, high current, independent op amp  
n Pulse width modulation with no double pulsing  
Block and Connection Diagrams  
DS010057-2  
16-Lead DIP  
DS010057-1  
Top View  
© 1998 National Semiconductor Corporation  
DS010057  
www.national.com  

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