(China (Mainland))
Product Summary
The LM317LM is a 3-terminal adjustable regulator. The LM317LM is exceptionally easy to use and requires only two external resistors to set the output voltage. Further, both line and load regulation are better than standard fixed regulators. Also, the LM317LM is available packaged in a standard TO-92 transistor package which is easy to use. In addition to higher performance than fixed regulators, the LM317LM offers full overload protection. Included on the chip are current limit, thermal overload protection and safe area protection. All overload protection circuitry remains fully functional even if the adjustment terminal is disconnected. Normally, no capacitors are needed unless the device is situated more than 6 inches from the input filter capacitors in which case an input bypass is needed. An optional output capacitor can be added to improve transient response. The adjustment terminal can be bypassed to achieve very high ripple rejection ratios which are difficult to achieve with standard 3-terminal regulators.
Parametrics
LM317LM absolute maximum ratings of PCA82C251are (1) Power Dissipation Input-Output: Internally Limited; (2) Voltage Differential: 40V; (3) Operating Junction Temperature Range-40°C to +125°C; (4) Storage Temperature: -55°C to +150°C; (5) Lead Temperature(Soldering, 4 seconds): 260°C.
Features
LM317LM features: (1) Adjustable output down to 1.2V; (2) Guaranteed 100 mA output current; (3) Line regulation typically 0.01%V; (4) Load regulation typically 0.1%; (5) Current limit constant with temperature; (6) Eliminates the need to stock many voltages; (7) Standard 3-lead transistor package; (8) 80 dB ripple rejection; (9) Available in TO-92, SO-8, or 6-Bump micro SMDpackage; (10) Output is short circuit protected; (11) See AN-1112 for micro SMD considerations.
Diagrams
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
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 LM317LM |
Fairchild Semiconductor |
Linear Regulators - Standard Positive adj Reg 3Terminal |
Data Sheet |
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LM317LM/NOPB |
National Semiconductor (TI) |
Linear Regulators - Standard 3-TERMINAL ADJ REG |
Data Sheet |
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LM317LMX/NOPB |
National Semiconductor (TI) |
Linear Regulators - Standard 3-TERMINAL ADJ REG |
Data Sheet |
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LM317LMX |
Fairchild Semiconductor |
Linear Regulators - Standard Positive adj Reg 3Terminal |
Data Sheet |
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LM317LM_Q |
Fairchild Semiconductor |
Linear Regulators - Standard Positive adj Reg 3Terminal |
Data Sheet |
Negotiable |
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