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LM317CM

更新时间: 2024-11-20 04:59:47
品牌 Logo 应用领域
威世 - VISHAY 稳压器
页数 文件大小 规格书
6页 123K
描述
3-Terminal Adjustable Output Positive Voltage Regulators

LM317CM 技术参数

生命周期:Transferred零件包装代码:D2PAK
包装说明:TO-263,针数:4
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.33
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-G3长度:10.29 mm
功能数量:1端子数量:3
工作温度TJ-Max:125 °C工作温度TJ-Min:
最大输出电流 1:1.5 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-263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:4.47 mm
表面贴装:YES端子形式:GULL WING
端子节距:2.54 mm端子位置:SINGLE
宽度:8.5 mmBase Number Matches:1

LM317CM 数据手册

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LM317CM & LM317CT  
New Product  
Vishay Semiconductor  
3-Terminal Adjustable Output Positive Voltage Regulators  
Pin Arrangement  
Description  
The LM317 is an adjustable 3-terminal positive voltage  
regulator capable of supplying in excess of 1.5A over an  
output voltage range of 1.2V to 37V. This voltage regulator  
is exceptionally easy to use and requires only two external  
resistors to set the output voltage. Further, it employs internal  
current limiting, thermal shutdown and safe area compen-  
sation, making it essentially blow-out proof.  
TO-263  
(LM317CM)  
3
2
1
3
TO-220  
(LM317CT)  
2
1
1. Adjust  
2. Vout  
3. Vin  
Features  
Heatsink is connected to pin 2  
• Output current in excess of 1.5 ampere  
• Output adjustable between 1.2V and 37V  
• Internal thermal overload protection  
Standard Application  
V
V
out  
in  
LM317  
• Internal short-circuit current limiting  
constant with temperature  
R1  
240  
I
Adjust  
R2  
ADJ  
Cin  
0.1µF  
Co  
1µF  
• Output transistor safe-area compensation  
• Floating operation for high voltage applications  
• Eliminates stocking many fixed voltages  
Notes:  
Cin is required if regulator is located an appreciable distance from power  
supply filter.  
Mechanical Data  
Case: TO-220 and TO-263 packages  
Co is not needed for stability, however, it does improve transient response.  
Vout = 1.25V (1 + R2/R1) + IAdj R2  
Weight: approx. 1.35g  
Since IAdj is controlled to less than 100µA, the error associated with this  
term is negligible in most applications  
Case outlines are on the back page.  
Functional Block Diagram  
Input  
3
+
--  
Voltage  
Reference  
Protection  
Circuitry  
Rlimit  
2
Vadj  
1
Output  
Maximum Ratings Ratings at 25°C ambient temperature unless otherwise specified.  
Parameter  
Symbol  
Vi-Vo  
PD  
Value  
Unit  
Vdc  
W
Input-Output Voltage Differential  
Power Dissipation, 25°C Free-Air Temperature  
Power Dissipation, 25°C Case Temperature  
Operating Junction Temperature Range  
Storage Junction Temperature Range  
40  
2
PD  
15  
W
TJ  
0 to +125  
65 to +150  
°C  
Tstg  
°C  
Document Number 74809  
29-Nov-01  
www.vishay.com  
1

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