LM317M 3 端子、500mA 可调节正电压稳压器
LM317M 描述
The LM317M is an adjustable 3-terminal positive-voltage regulator capable of supplying more than 500 mA over an output-voltage range of 1.25 V to 37 V. The LM317M is exceptionally easy to use and requires only two external resistors to set the output voltage. Furthermore, both line and load regulation are better than standard fixed regulators.
In addition to having higher performance than fixed regulators, the device includes on-chip current limiting, thermal-overload protection, and safe-operating-area protection. All overload protection remains fully functional if the ADJUST terminal is disconnected.
Normally, no capacitors are needed unless the device is more than six inches from the input filter capacitors, in which case an input bypass capacitor is needed. An optional output capacitor can be added to improve transient response. The ADJUST terminal can be bypassed to achieve high ripple-rejection ratios, which are difficult to achieve with standard three-terminal regulators.
|
LM317 |
LM317L |
LM317M |
LM317MQ |
| Vout(Min)(V) |
1.25 |
1.2 |
1.25 |
1.25 |
| Vout(Max)(V) |
37 |
32 |
37 |
37 |
| Iout(Max)(A) |
1.5 |
0.1 |
0.5 |
0.5 |
| Vdo(Max)(V) |
3 |
2.5 |
3 |
3 |
| Vin(Min)(V) |
4.2 |
3.7 |
4.2 |
3 |
| Vin(Max)(V) |
40 |
38 |
40 |
40 |
| Pin/Package |
2PFM, 3DDPAK/TO-263, 3TO-220, 4SOT-223 |
3SOT-89, 3TO-92, 8SOIC, 8TSSOP |
3PFM, 4SOT-223 |
4SOT-223 |
| Approx. Price (US$) |
0.36 | 1ku |
0.14 | 1ku |
0.40 | 1ku |
0.44 | 1ku |
LM317M 特性
- Output Voltage Range Adjustable From 1.25 V to 37 V
- Output Current Greater Than 500 mA
- Internal Short-Circuit Current Limiting
- Thermal-Overload Protection
- Output Safe-Area Compensation
- Q Devices Meet Automotive Performance Requirements
- Customer-Specific Configuration Control Can Be Supported for Q Devices Along With Major-Change Approval
LM317M 芯片订购指南
| 器件 |
状态 |
温度 (oC) |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| LM317MDCY |
ACTIVE |
0 to 125 |
0.43 | 1ku |
SOT-223 (DCY) | 4 |
80 | TUBE |
L4 |
| LM317MDCYG3 |
ACTIVE |
0 to 125 |
0.43 | 1ku |
SOT-223 (DCY) | 4 |
80 | TUBE |
L4 |
| LM317MDCYR |
ACTIVE |
0 to 125 |
0.36 | 1ku |
SOT-223 (DCY) | 4 |
2500 | LARGE T&R |
L4 |
| LM317MDCYRG3 |
ACTIVE |
0 to 125 |
0.36 | 1ku |
SOT-223 (DCY) | 4 |
2500 | LARGE T&R |
L4 |
| LM317MKTPR |
OBSOLETE |
0 to 125 |
|
(KTP) | 2 |
|
LM317M |
| LM317MKTPRG3 |
OBSOLETE |
0 to 125 |
|
(KTP) | 2 |
|
LM317M |
| LM317MKVURG3 |
ACTIVE |
0 to 125 |
0.48 | 1ku |
PFM (KVU) | 3 |
2500 | LARGE T&R |
LM317M |
LM317M 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| LM317MDCY |
Green (RoHS & no Sb/Br) |
CU SN |
Level-2-260C-1 YEAR |
LM317MDCY |
LM317MDCY |
| LM317MDCYG3 |
Green (RoHS & no Sb/Br) |
CU SN |
Level-2-260C-1 YEAR |
LM317MDCYG3 |
LM317MDCYG3 |
| LM317MDCYR |
Green (RoHS & no Sb/Br) |
CU SN |
Level-2-260C-1 YEAR |
LM317MDCYR |
LM317MDCYR |
| LM317MDCYRG3 |
Green (RoHS & no Sb/Br) |
CU SN |
Level-2-260C-1 YEAR |
LM317MDCYRG3 |
LM317MDCYRG3 |
| LM317MKVURG3 |
Pb-Free (RoHS) |
CU SN |
Level-3-260C-168 HR |
LM317MKVURG3 |
LM317MKVURG3 |
LM317M 应用技术支持与电子电路设计开发资源下载
- LM317M 数据资料 dataSheet 下载.PDF
- TI 德州仪器LDO低压差线性稳压器驱动器选型与价格参考 . xls
- Dual MOSFET Driver
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- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
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- LDO PSRR Measurement Simplified
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- LDO Noise Demystified
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- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)