Specifications
| Attribute | Value |
| Package / Case | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Part Status | Active |
| 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 |
| Current - Quiescent (Iq) | 6 mA |
| Current - Supply (Max) | 10 mA |
| PSRR | 77dB (120Hz) |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
Overview
Description
The LM337BD2TR4G is a voltage regulator integrated circuit (IC) designed to provide a stable, adjustable negative output voltage. It is commonly used in power supply applications where a negative voltage is required. The IC can deliver an output voltage range from -1.2V to -37V, with a maximum current output of 1.5A. The LM337BD2TR4G offers features like thermal regulation, current limiting, and safe area protection, which enhance its reliability and robustness in various applications.
Packaged in a D2PAK surface-mount format, the LM337BD2TR4G is suitable for high-density circuit designs. It is often used in applications such as adjustable negative power supplies, battery chargers, and other circuits that require stable negative voltage. The device's ease of use, combined with its ability to maintain a consistent output under varying conditions, makes it a popular choice among engineers and designers. Its flexibility allows it to be used in conjunction with positive voltage regulators for dual power supply systems.
Packaged in a D2PAK surface-mount format, the LM337BD2TR4G is suitable for high-density circuit designs. It is often used in applications such as adjustable negative power supplies, battery chargers, and other circuits that require stable negative voltage. The device's ease of use, combined with its ability to maintain a consistent output under varying conditions, makes it a popular choice among engineers and designers. Its flexibility allows it to be used in conjunction with positive voltage regulators for dual power supply systems.
Equivalent
The LM337BD2TR4G is a negative voltage regulator. Equivalent products include:
1. LM337 by Texas Instruments
2. LM337 by ON Semiconductor (other variants)
3. LT1033 by Analog Devices
4. L7912CV by STMicroelectronics (for similar voltage output)
5. MC7912CT by ON Semiconductor (for similar voltage output)
Ensure compatibility by checking specifications like output current, voltage range, and package type.
1. LM337 by Texas Instruments
2. LM337 by ON Semiconductor (other variants)
3. LT1033 by Analog Devices
4. L7912CV by STMicroelectronics (for similar voltage output)
5. MC7912CT by ON Semiconductor (for similar voltage output)
Ensure compatibility by checking specifications like output current, voltage range, and package type.
Features
The LM337BD2TR4G is a linear voltage regulator designed for adjustable negative voltage outputs. Key features include:
1. Output Voltage Range: Adjustable from -1.2V to -37V.
2. Output Current: Capable of delivering up to 1.5A.
3. Thermal Regulation: Equipped with internal current limiting and thermal shutdown features for protection against overload and overheating.
4. Ripple Rejection: Offers good ripple rejection to maintain output voltage stability.
5. Package Type: Available in a D2PAK surface-mount package for easy PCB integration.
6. Temperature Range: Operates in a wide temperature range, making it suitable for industrial applications.
7. Safe Operating Area: Designed to ensure safe operation under various conditions.
These features make the LM337BD2TR4G suitable for a range of applications, including power supply design and regulation in electronic devices.
1. Output Voltage Range: Adjustable from -1.2V to -37V.
2. Output Current: Capable of delivering up to 1.5A.
3. Thermal Regulation: Equipped with internal current limiting and thermal shutdown features for protection against overload and overheating.
4. Ripple Rejection: Offers good ripple rejection to maintain output voltage stability.
5. Package Type: Available in a D2PAK surface-mount package for easy PCB integration.
6. Temperature Range: Operates in a wide temperature range, making it suitable for industrial applications.
7. Safe Operating Area: Designed to ensure safe operation under various conditions.
These features make the LM337BD2TR4G suitable for a range of applications, including power supply design and regulation in electronic devices.
Pinout
The LM337BD2TR4G is a negative adjustable voltage regulator. It typically comes in a D2PAK-3 (TO-263) package, which consists of three pins. The pin functions are as follows:
1. Input (Pin 1): This is where the unregulated input voltage is applied. The voltage supplied here should be more negative than the desired output voltage.
2. Output (Pin 2): This pin provides the regulated output voltage, which can be adjusted to a desired level by using external resistors.
3. Adjust (Pin 3): This pin is used to set the output voltage. By connecting resistors between this pin and the output, and between this pin and ground, the output voltage can be adjusted according to the voltage divider principle.
The LM337BD2TR4G allows for a wide range of output voltages, typically from -1.2V to -37V, and is capable of providing up to 1.5A of current, depending on the input-output voltage differential and thermal conditions.
1. Input (Pin 1): This is where the unregulated input voltage is applied. The voltage supplied here should be more negative than the desired output voltage.
2. Output (Pin 2): This pin provides the regulated output voltage, which can be adjusted to a desired level by using external resistors.
3. Adjust (Pin 3): This pin is used to set the output voltage. By connecting resistors between this pin and the output, and between this pin and ground, the output voltage can be adjusted according to the voltage divider principle.
The LM337BD2TR4G allows for a wide range of output voltages, typically from -1.2V to -37V, and is capable of providing up to 1.5A of current, depending on the input-output voltage differential and thermal conditions.
Manufacturer
The LM337BD2TR4G is manufactured by ON Semiconductor, a company known for producing a wide range of semiconductor solutions. ON Semiconductor specializes in the design and manufacture of energy-efficient electronics, including power and signal management, logic, discrete, and custom devices for various applications. This company serves multiple markets, including automotive, industrial, consumer electronics, communications, and computing.
Application
The LM337BD2TR4G is a versatile negative voltage regulator used in various applications. It is commonly employed in power supply circuits to provide stable and adjustable negative output voltages, making it suitable for use in consumer electronics, industrial equipment, and telecommunications. It is also used in battery chargers, operational amplifier circuits, and any systems requiring a regulated negative voltage. Its ability to handle a range of output voltages and currents makes it ideal for custom power supply designs and for providing reliable power in sensitive electronic applications.
Package
The LM337BD2TR4G is typically supplied in a D2PAK (TO-263) surface-mount package. This package type is designed for efficient thermal management and is suitable for high-power applications, providing a solid mechanical and thermal connection to the circuit board.
