参数资料
| 型号： | LM317TG |
| 厂商： | ON Semiconductor |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .5A TO220AB |
| 标准包装： | 50 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 1.2 V ~ 37 V |
| 输入电压： | 最高 40 V |
| 稳压器数量： | 1 |
| 电流 - 输出： | 500mA |
| 电流 - 限制（最小）： | 1.5A |
| 工作温度： | 0°C ~ 125°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-220-3 |
| 供应商设备封装： | TO-220AB |
| 包装： | 管件 |
| 产品目录页面： | 1116 (CN2011-ZH PDF) |
| 其它名称： | LM317TGOS |
LM317, NCV317
1.5 A Adjustable Output,
Positive Voltage Regulator
The LM317 is an adjustable 3 ? terminal positive voltage regulator
capable of supplying in excess of 1.5 A over an output voltage range of
1.2 V to 37 V. 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
compensation, making it essentially blow ? out proof.
The LM317 serves a wide variety of applications including local, on
card regulation. This device can also be used to make a programmable
http://onsemi.com
output regulator, or by connecting a fixed resistor between the
adjustment and output, the LM317 can be used as a precision current
regulator.
1
2
D 2 PAK ? 3
D2T SUFFIX
CASE 936
3
Features
? Output Current in Excess of 1.5 A
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
?
?
?
?
Output Adjustable between 1.2 V and 37 V
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting Constant with Temperature
Output Transistor Safe ? Area Compensation
?
?
Floating Operation for High Voltage Applications
Available in Surface Mount D 2 PAK ? 3, and Standard 3 ? Lead
Transistor Package
TO ? 220
T SUFFIX
CASE 221AB
?
NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC ? Q100
Qualified and PPAP Capable
1
2
3
Pin 1. Adjust
2. V out
3. V in
?
?
Eliminates Stocking many Fixed Voltages
These are Pb ? Free Devices
Heatsink surface connected to Pin 2.
V in
LM317
V out
R 1
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
240
C in *
0.1 m F
I Adj
Adjust
+ C O **
1.0 m F
DEVICE MARKING INFORMATION
See general marking information in the device marking
R 2
* * C in is required if regulator is located an appreciable distance from power supply filter.
** C O is not needed for stability, however, it does improve transient response.
section on page 10 of this data sheet.
V out + 1.25 V 1 ) 2
Adj 2
R
R1
) I
R
Since I Adj is controlled to less than 100 m A, the error associated with this term is
negligible in most applications.
Figure 1. Standard Application
? Semiconductor Components Industries, LLC, 2013
April, 2013 ? Rev. 13
1
Publication Order Number:
LM317/D
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM317TG | 制造商:ON Semiconductor 功能描述:IC VOLTAGE REGULATOR |
| LM317TG | 制造商:ON Semiconductor 功能描述:Voltage Regulator IC |
| LM317-TI | 制造商:TI 制造商全称:Texas Instruments 功能描述:3-TERMINAL ADJUSTABLE REGULATOR |
| LM317-TN3-R | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:HIGH CURRENT 1.3V TO 37V ADJUSTABLE VOLTAGE REGULATOR |
| LM317-TN3-T | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:HIGH CURRENT 1.3V TO 37V ADJUSTABLE VOLTAGE REGULATOR |
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