LM337IMP

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LM337IMP

IC REG LIN NEG ADJ 1.5A SOT223-4

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Thông số kỹ thuật

Part Status Obsolete
Base Product Number LM337
Output Configuration Negative
Output Type Adjustable
Number of Regulators 1
Voltage - Input (Max) -40V
Voltage - Output (Min/Fixed) -1.2V
Voltage - Output (Max) -37V
Current - Output 1.5A
PSRR 60dB (120Hz)
Protection Features Over Temperature, Short Circuit
Operating Temperature -40°C ~ 125°C
Mounting Type Surface Mount
Package TO-261-4, TO-261AA
Supplier Device Package SOT-223-4
Packaging Cut Tape (CT), Tape & Reel (TR)

Tổng quan

Description

The LM337IMP is a three-terminal adjustable negative voltage regulator, part of the LM337 series. It is designed to provide output voltages ranging from -1.25V to -37V with a load current of up to 1.5A, depending on the specific model and package used. The LM337IMP is known for its versatility and ease of use in various applications, such as power supplies and voltage regulation circuits.
Key features include its ability to maintain a stable output voltage with minimal external components, thermal overload protection, and short-circuit protection. The device also has a safe operating area protection, making it reliable under diverse operating conditions. It is commonly used in applications requiring stable negative voltage output, and its adjustability makes it suitable for custom voltage levels.
The LM337IMP is often found in TO-220, TO-263, and SOT-223 packages, with the SOT-223 variant (LM337IMP) preferred for compact designs due to its small size. These features make it a popular choice for use in consumer electronics, industrial controls, and other systems requiring efficient voltage regulation.

Features

The LM337IMP is a versatile adjustable negative voltage regulator. Key features include:
1. Adjustable Output: Provides output voltages ranging from -1.2V to -37V, making it suitable for various applications requiring negative voltage regulation.
2. Current Capacity: Capable of delivering over 1.5A of output current with adequate heat sinking. This makes it suitable for moderate power applications.
3. Line and Load Regulation: Offers excellent line and load regulation, ensuring stable output despite variations in input voltage or output load conditions.
4. Thermal Overload Protection: Built-in protection against overheating ensures the device shuts down safely if it surpasses a certain temperature, enhancing reliability.
5. Current Limiting: Includes current limiting to prevent damage from overcurrent situations, providing robust fault tolerance.
6. Safe Operating Area Protection: Ensures the device operates within safe limits under all conditions, preventing potential damage.
7. Low Minimum Load Current: Requires only a small minimum load current for proper regulation, enhancing efficiency in light load conditions.
These features make the LM337IMP a reliable choice for applications needing adjustable negative voltage regulation, such as power supplies and various electronic circuits.

Package

The LM337IMP is a negative voltage regulator, and its package type is typically SOT-223. This surface-mount package is compact and designed for easy integration into circuit boards where space is at a premium.

Pinout

The LM337IMP is a three-terminal adjustable negative voltage regulator. It typically comes in a surface-mount package like the SOT-223, which has three pins. The pin configuration for the LM337IMP is as follows:
1. Input (Vin): This is where the unregulated negative voltage is applied.
2. Output (Vout): This pin provides the regulated negative output voltage.
3. Adjust (Adj): This pin is used to adjust the output voltage. By connecting a resistor network between the output and adjust pins, the output voltage can be set to a desired level.
The LM337IMP is used to provide a stable and adjustable negative output voltage, typically ranging from -1.25V to -37V, with a maximum output current of around 1.5A, depending on the package and conditions. The device is commonly used in power supply circuits where negative voltage regulation is required.

Manufacturer

The LM337IMP is manufactured by Texas Instruments, which is a global semiconductor company. Texas Instruments designs and produces a wide array of analog and embedded processing chips. It is known for its focus on innovation and engineering, providing components that are integral to electronics across various industries, including automotive, industrial, personal electronics, and communications equipment. Texas Instruments is recognized for its comprehensive portfolio of products that support the development of electronic systems worldwide.

Application

The LM337IMP is a negative adjustable voltage regulator commonly used in power supply circuits. Its application areas include providing stable voltage regulation in battery chargers, powering operational amplifiers, and as a component in programmable power supplies. It is also used in audio equipment, instrumentation, and any systems requiring a reliable negative voltage regulation. The versatility and adjustability make it suitable for various electronic devices and projects needing stable negative voltage outputs.

Equivalent

The LM337IMP is a negative adjustable voltage regulator. Equivalent products include the LM337 from other manufacturers, the L337 series, and alternatives like the LT1033, MC7905, and UA79 series. Ensure compatibility in terms of voltage, current, and thermal characteristics when selecting an equivalent.

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