5秒后页面跳转
捷配首页

Datasheet > LM317MDTT4
LM317MDTT4 PDF预览

LM317MDTT4

更新时间： 2024-01-03 19:58:55
品牌 Logo 应用领域
摩托罗拉 - MOTOROLA 输出元件调节器
页数 文件大小 规格书
10页 189K
描述
Adjustable Positive Standard Regulator, 1.2V Min, 37V Max, BIPolar, PSSO2, PLASTIC, DPAK-3

阅读下载

获取价格

LM317MDTT4 技术参数

生命周期：Obsolete包装说明：TO-252,
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.06
最大差分输入-输出电压：40 V最小差分输入-输出电压：3 V
JESD-30 代码：R-PSSO-G2长度：6.54 mm
功能数量：1端子数量：2
工作温度TJ-Max：125 °C工作温度TJ-Min：
最大输出电流 1：0.5 A最大输出电压 1：37 V
最小输出电压 1：1.2 V封装主体材料：PLASTIC/EPOXY
封装代码：TO-252封装形状：RECTANGULAR
封装形式：SMALL OUTLINE认证状态：Not Qualified
调节器类型：ADJUSTABLE POSITIVE SINGLE OUTPUT STANDARD REGULATOR座面最大高度：2.38 mm
表面贴装：YES技术：BIPOLAR
端子形式：GULL WING端子节距：2.3 mm
端子位置：SINGLE宽度：6.16 mm
Base Number Matches：1

LM317MDTT4 数据手册

 浏览型号LM317MDTT4的Datasheet PDF文件第4页浏览型号LM317MDTT4的Datasheet PDF文件第5页浏览型号LM317MDTT4的Datasheet PDF文件第6页浏览型号LM317MDTT4的Datasheet PDF文件第8页浏览型号LM317MDTT4的Datasheet PDF文件第9页浏览型号LM317MDTT4的Datasheet PDF文件第10页 
LM317M, LM317MA  
APPLICATIONS INFORMATION  
Basic Circuit Operation  
External Capacitors  
The LM317M is a three–terminal floating regulator. In  
operation, the LM317M develops and maintains a nominal  
A 0.1 µF disc or 1.0 µF tantalum input bypass capacitor  
(C ) is recommended to reduce the sensitivity to input line  
in  
1.25 V reference (V ) between its output and adjustment  
impedance.  
ref  
terminals. This reference voltage is converted to a  
The adjustment terminal may be bypassed to ground to  
programming current (I  
constant current flows through R to ground. The regulated  
2
output voltage is given by:  
) by R (see Figure 17), and this  
improve ripple rejection. This capacitor (C ) prevents ripple  
PROG  
1
Adj  
from being amplified as the output voltage is increased. A  
10 µF capacitor should improve ripple rejection about 15 dB  
at 120 Hz in a 10 V application.  
R
2
Although the LM317M is stable with no output  
capacitance, like any feedback circuit, certain values of  
external capacitance can cause excessive ringing. An output  
V
V
1
I
R
out  
ref  
Adj 2  
R
1
capacitance (C ) in the form of a 1.0 µF tantalum or 25 µF  
aluminum electrolytic capacitor on the output swamps this  
effect and insures stability.  
Since the current from the terminal (I ) represents an  
Adj  
O
error term in the equation, the LM317M was designed to  
control I  
to less than 100 µA and keep it constant. To do  
Adj  
this, all quiescent operating current is returned to the output  
terminal. This imposes the requirement for a minimum load  
current. If the load current is less than this minimum, the  
output voltage will rise.  
Since the LM317M is a floating regulator, it is only the  
voltage differential across the circuit which is important to  
performance, and operation at high voltages with respect to  
ground is possible.  
Protection Diodes  
When external capacitors are used with any IC regulator it  
is sometimes necessary to add protection diodes to prevent  
the capacitors from discharging through low current points  
into the regulator.  
Figure 18 shows the LM317M with the recommended  
protection diodes for output voltages in excess of 25 V or high  
capacitance values (C > 25 µF, C  
> 5.0 µF). Diode D  
O
Adj  
1
Figure 17. Basic Circuit Configuration  
prevents C from discharging thru the IC during an input  
O
short circuit. Diode D protects against capacitor C  
2
Adj  
discharging through the IC during an output short circuit. The  
combination of diodes D and D prevents C from  
V
V
out  
in  
LM317M  
+
1
2
Adj  
discharging through the IC during an input short circuit.  
R
1
V
ref  
Figure 18. Voltage Regulator with  
Protection Diodes  
Adjust  
I
PROG  
V
out  
D
1
I
Adj  
R
2
1N4002  
V
= 1.25 V Typical  
ref  
V
V
in  
out  
V
LM317M  
out  
+
Load Regulation  
C
R
C
O
in  
1
The LM317M is capable of providing extremely good load  
regulation, but a few precautions are needed to obtain  
maximum performance. For best performance, the  
programming resistor (R ) should be connected as close to  
the regulator as possible to minimize line drops which  
effectively appear in series with the reference, thereby  
D
2
Adjust  
1N4002  
C
Adj  
1
R
2
degrading regulation. The ground end of R can be returned  
2
near the load ground to provide remote ground sensing and  
improve load regulation.  
7
MOTOROLA ANALOG IC DEVICE DATA  
1...45678910

下载PDF

与LM317MDTT4相关器件

型号 品牌 描述 获取价格 数据表
LM317MDT-TR STMICROELECTRONICS Medium current 1.2 to 37 V adjustable voltage regulator

获取价格
LM317MDTX TI 1.2 V-37V ADJUSTABLE POSITIVE REGULATOR, PSSO2, TO-252, DPAK-3

获取价格
LM317MDTX NSC 3-Terminal Adjustable Regulator

获取价格
LM317MDTX/NOPB TI LM117/LM317A/LM317-N 3-Terminal Adjustable Regulator

获取价格
LM317MG-AA3-R UTC MEDIUM CURRENT 1.2V TO 37V ADJUSTABLE VOLTAGE REGULATOR

获取价格
LM317MG-S08-R UTC MEDIUM CURRENT 1.2V TO 37V ADJUSTABLE VOLTAGE REGULATOR

获取价格

与LM317MDTT4相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证