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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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製造商零件號 # : LM137K
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包裝/封裝: TO-3
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製造商: STMicroelectronics
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產品分類 : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
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LM137K 數據表
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詳細說明
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
主要特徵
- 1.5A Output Current Guaranteed
- Internal Thermal Overload Protection
- Output Short Circuit Protected
- Hermetic Metal TO3 Package
- Screening Options Available
規格
以下是所選零件的基本參數，涉及零件的特性及其所屬類別。
| 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 |
數據表 PDF
數據表記錄了器件的特性、絕對最大額定值、應用等，這對於作為器件特定應用的整體指南大有裨益。
常見問題解答
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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