The LM137 and LM337-N are adjustable 3-terminal negative voltage regulators capable of supplying –1.5 A or more currents over an output voltage range of –1.25 V to –37 V. It requires only two external resistors to set the output voltage and one output capacitor for frequency compensation. The circuit design has been optimized for excellent regulation and low thermal transients. Further, the LM137 and LM337-N feature internal current limiting, thermal shutdown and safe-area compensation, making it virtually blowout-proof against overloads.
The LM137 and LM337-N are ideal complements to the LM117 and LM317 adjustable positive regulators. The LM137 has a wider operating temperature range than the LM337-N and is also offered in military and space qualified versions.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LM137, LM337-N 3-Terminal Adjustable Negative Regulators datasheet (Rev. E) | PDF | HTML | 13 Jan 2016 |
| EVM User's guide | LM317A-337N-EVM User's Guide | 21 Jan 2016 | ||
| Application note | Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A) | 05 May 2013 | ||
| Application note | LB-46 A New Production Technique for Trimming Voltage Regulators | 15 May 2004 | ||
| Application note | A New Production Technique for Trimming Voltage Regulators | 03 Oct 2002 |
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The LM317A-337N-EVM demonstrates canonical application of the LM317A adjustable regulator and its negative complement, the LM337-N. The evaluation module (EVM) is assesmbled with the SOT-223 package option for each device, supplying up to 1 A of load current. The EVM is designed for easy (...)
| Package | Pins | Download |
|---|---|---|
| SOT-223 (DCY) | 4 | View options |
| TO-220 (NDE) | 3 | View options |
| TO-220 (NDG) | 3 | View options |
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