参数资料
| 型号： | NCV317MBSTT3G |
| 厂商： | ON Semiconductor |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .5A SOT-223-4 |
| 标准包装： | 4,000 |
| 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（最小） |
| 电流 - 限制（最小）： | 500mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-261-4，TO-261AA |
| 供应商设备封装： | SOT-223 |
| 包装： | 带卷 (TR) |
LM317M, NCV317MA,
NCV317M
500 mA Adjustable Output,
Positive Voltage Regulator
The LM317M is an adjustable three ? terminal positive voltage
regulator capable of supplying in excess of 500 mA 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 LM317M serves a wide variety of applications including local,
on ? card regulation. This device also makes an especially simple
adjustable switching regulator, a programmable output regulator, or by
connecting a fixed resistor between the adjustment and output, the
LM317M can be used as a precision current regulator.
http://onsemi.com
Heatsink surface
connected to Pin 2
TO ? 220AB
T SUFFIX
CASE 221AB
Features
1
2
3
2
?
?
?
?
?
?
?
?
Output Current in Excess of 500 mA
Output Adjustable between 1.2 V and 37 V
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting
Output Transistor Safe ? Area Compensation
Floating Operation for High Voltage Applications
Eliminates Stocking Many Fixed Voltages
NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC ? Q100
SOT ? 223
ST SUFFIX
CASE 318E
DPAK
DT SUFFIX
CASE 369C
1
1 2
3
3
4
?
Qualified and PPAP Capable
These are Pb ? Free Devices
Heatsink Surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
V in
V in
LM317M
V out
R 1
240
V out
1
PIN ASSIGNMENT
Adjust
*
C in
0.1 m F
I Adj
Adjust
**
+C O
1.0 m F
2
3
V out
V in
R 2
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
* = C in is required if regulator is located an appreciable distance from power supply filter.
Vout + 1.25 V 1 ) 2 ) IAdj R2
** = C O is not needed for stability, however, it does improve transient response.
R
R1
Since I Adj is controlled to less than 100 m A, the error associated with this
term is negligible in most applications.
Figure 1. Simplified Application
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 11 of this data sheet.
? Semiconductor Components Industries, LLC, 2013
December, 2013 ? Rev. 23
1
Publication Order Number:
LM317M/D
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