LM117H

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LM117H

IC REG LINEAR POS ADJ 1.5A TO3

  • Manufacturer
  • Mfr. Part #LM117H
  • Package
  • Datasheet
  • In Stock5628

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Specifications

Part Status Obsolete
Base Product Number LM117
Output Configuration Positive
Output Type Adjustable
Number of Regulators 1
Voltage - Input (Max) 40V
Voltage - Output (Min/Fixed) 1.25V
Voltage - Output (Max) 37V
Current - Output 1.5A
Current - Quiescent (Iq) 5 mA
PSRR 80dB ~ 65dB (120Hz)
Protection Features Over Current, Over Temperature, Short Circuit
Operating Temperature -55°C ~ 150°C (TJ)
Mounting Type Through Hole
Package TO-205AD, TO-39-3 Metal Can
Supplier Device Package TO-3
Packaging Bulk

Overview

Description

The LM117H is a high-performance adjustable voltage regulator. It is part of the LM117 series, which is known for its ability to provide a stable output voltage with a wide input voltage range. The LM117H variant typically comes in a hermetically sealed TO-3 package, making it suitable for applications requiring high reliability and protection against environmental factors.
The device can output a voltage range from 1.2V to 37V with a maximum output current of 1.5A. It features excellent line and load regulation, making it ideal for use in power supply designs where precision is key. The LM117H includes internal current limiting, thermal shutdown, and safe area compensation, which enhance its reliability and protect against overload conditions.
Applications for the LM117H include industrial and military systems where robust performance is critical. Its ability to maintain a consistent output with varying input conditions makes it versatile for various applications, from powering microcontrollers to serving as a part of larger power management systems.

Features

The LM117H is a versatile voltage regulator known for its reliable performance and adjustable output. Key features include:
1. Output Voltage Range: The LM117H provides an adjustable output voltage range from 1.2V to 37V, making it suitable for various applications.
2. Output Current: It can deliver up to 1.5A of load current, which is sufficient for many power supply needs.
3. Line Regulation: The device offers excellent line regulation, typically 0.01%/V, ensuring stable output with varying input voltages.
4. Load Regulation: It features good load regulation, typically 0.1%, to maintain output stability under different load conditions.
5. Thermal Overload Protection: The LM117H includes built-in thermal overload protection to prevent damage from excessive heat.
6. Current Limiting: It incorporates current limiting to safeguard against overload conditions.
7. Safe Operating Area Protection: The regulator ensures safe operation by preventing the output transistor from operating outside its safe area, enhancing reliability.
8. Minimal External Components: Requiring only a few external components, the LM117H simplifies circuit design.
These features make the LM117H a robust choice for adjustable voltage regulation in various electronic projects.

Package

The LM117H is typically housed in a TO-3 package. This package is a metal can that provides good thermal performance, making it suitable for high-power applications.

Pinout

The LM117H is a voltage regulator IC, and it typically comes in a TO-39 package with 3 pins. The function of these pins is as follows:
1. Input (In): This pin receives the input voltage that you want to regulate. The input voltage must be higher than the desired output voltage by a certain margin to ensure proper regulation.
2. Output (Out): This pin provides the regulated output voltage. The LM117H can output a voltage that is adjustable over a range, typically from 1.25V to 37V, depending on the external resistor configuration.
3. Adjustment (Adj): This pin is used to set the output voltage through an external resistor network. By adjusting the resistance connected to this pin, you can change the output voltage of the regulator.
These pins allow the LM117H to serve as a versatile and adjustable voltage regulator, suitable for a wide range of applications requiring a stable output voltage.

Manufacturer

The LM117H is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a wide range of electronic components and integrated circuits used in various electronic devices and systems. The company is known for its innovation and development in the fields of analog and digital embedded processing. Texas Instruments serves numerous industries, including automotive, industrial, personal electronics, communications equipment, and enterprise systems. With a strong focus on research and development, TI consistently works towards advancing technology and providing solutions that help customers create more efficient and reliable electronic products.

Application

The LM117H is a versatile voltage regulator used in applications requiring a stable output voltage. It is commonly used in power supply circuits for electronics to provide a reliable and adjustable voltage output. Its applications include telecommunications, computer systems, and instrumentation. Its robustness also makes it suitable for industrial environments and automotive electronics. Additionally, it can be used in battery chargers and as a post-regulation device in switching power supplies to improve stability and performance.

Equivalent

The LM117H is a voltage regulator. Equivalent products include the LM317 series, which are adjustable voltage regulators with similar specifications. Equivalent models from other manufacturers include the LT317 (from Analog Devices/Linear Technology), KA317 (from Fairchild Semiconductor/ON Semiconductor), and the NTE956 (from NTE Electronics). These alternatives generally have compatible pin configurations and performance characteristics. Always check specific datasheets to ensure compatibility with your application.

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