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LM137K
1.2 V-37V ADJUSTABLE NEGATIVE REGULATOR, MBFM2, TO-3, 2 PINLM137K
1.2 V-37V ADJUSTABLE NEGATIVE REGULATOR, MBFM2, TO-3, 2 PIN
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Manufacturer Part # : LM137K
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Package/Case: TO-3
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Brand: STMicroelectronics
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Product Categories : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
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We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.
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Service & Packaging
Service & Packaging
About After Sales Service
All Parts Extended Quality Guarantee
Initiate the application within 90 days from the shipment date.
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LM137K DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
The 137/337 Series regulators are adjustable 3 terminal voltage regulators capable of supplying in excess of -1.5A over an output voltage range of -1.2V to -37V (HV Series, -47V). The regulators are exceptionally easy to apply requiring only 2 external resistors to set the output voltage and 1 output capacitor for frequency compensation.FEATURES• 1.5A Output Current Guaranteed• Internal Thermal Overload Protection• Output Short Circuit Protected• Hermetic Metal TO3 Package• Screening Options AvailableAPPLICATIONS• Adjustable Power Supplies• System Power Supplies• Precision Voltage / Current Regulators
Key Features
- 1.5A Output Current Guaranteed
- Internal Thermal Overload Protection
- Output Short Circuit Protected
- Hermetic Metal TO3 Package
- Screening Options Available
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Pbfree Code | Yes | Rohs Code | Yes |
| Part Life Cycle Code | Obsolete | Part Package Code | TO-204AA |
| Pin Count ! | 2 | Reach Compliance Code | not_compliant |
| ECCN Code | EAR99 | HTS Code ! | 8542.39.00.01 |
| Adjustability | ADJUSTABLE | Input-Output Voltage Differential-Max | 40 V |
| Input-Output Voltage Differential-Min | 3 V | JESD-30 Code | O-MBFM-P2 |
| JESD-609 Code | e3 | Line Regulation-Max (%/V) | 0.02 |
| Load Regulation-Max(%) | 0.5% | Number of Functions | 1 |
| Number of Outputs | 1 | Number of Terminals | 2 |
| Operating Temperature TJ-Max | 150 °C | Operating Temperature TJ-Min | -55 °C |
| Operating Temperature-Max | 150 °C | Operating Temperature-Min | -55 °C |
| Output Current1-Max | 1.5 A | Output Voltage1-Max | 37 V |
| Output Voltage1-Min | 1.2 V | Package Body Material | METAL |
| Package Equivalence Code | TO-204/-3 | Package Shape | ROUND |
| Package Style | FLANGE MOUNT | Qualification Status ! | Not Qualified |
| Regulator Type | ADJUSTABLE NEGATIVE SINGLE OUTPUT STANDARD REGULATOR | Surface Mount ! | NO |
| Technology | BIPOLAR | Terminal Finish | Matte Tin (Sn) |
| Terminal Form ! | PIN/PEG | Terminal Position | BOTTOM |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is LM137K?
The LM137K is a 3-terminal adjustable voltage regulator integrated circuit (IC) manufactured by Texas Instruments. It is designed to provide a highly stable and adjustable output voltage, making it suitable for applications such as power supplies, industrial control systems, and voltage references.
How Does LM137K Work?
The LM137K works by utilizing an internal voltage reference and a feedback control loop to regulate the output voltage. It is capable of providing a fixed or adjustable output voltage, depending on the external components connected to it. The regulator offers thermal shutdown and current limit features for protection against overloading and overheating.
How Many Pins does LM137K have and What are the Functions of the Pinout Configuration?
The LM137K is housed in a TO-3 metal can package. The pinout configuration includes:
- ADJ: Adjustable output pin.
- VOUT: Regulated output voltage pin.
- VIN: Input voltage pin.
- ADJ: Adjustable output pin.
- VOUT: Regulated output voltage pin.
- VIN: Input voltage pin.
What are the Pros and Cons of LM137K?
Pros:
- Adjustable Output: Provides flexibility in setting the desired output voltage.
- Stability: Offers a stable output voltage over variations in load, line, and temperature.
- Thermal Shutdown: Includes thermal shutdown protection for increased reliability.
- Current Limit: Incorporates current limit protection for safe operation under overload conditions.
- Wide Input Voltage Range: Allows operation with a wide range of input voltages.
Cons:
- Heat Dissipation: The TO-3 metal can package may require additional heat sinking for high power applications.
- External Components: May require external capacitors for stability and output noise reduction.
Are There Any Equivalents/Alternatives to LM137K for Recommendation?
- The LM337 from Texas Instruments is a negative adjustable voltage regulator with similar features.
- Alternatives to the LM137K include the LMS1587 from National Semiconductor and the LT1086 from Linear Technology.
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