LD2981CM33TR

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LD2981CM33TR

+BOM

IC REG LINEAR 3.3V 100MA SOT23-5

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사양

속성 가치
PartStatus Active
OutputConfiguration Positive
OutputType Fixed
NumberofRegulators 1
Voltage-Input(Max) 16V
Voltage-Output(Min/Fixed) 3.3V
VoltageDropout(Max) 0.375V @ 100mA
Current-Output 100mA
Current-Quiescent(Iq) 150 µA
Current-Supply(Max) 2.6 mA
PSRR 63dB (1kHz)
ControlFeatures Enable
ProtectionFeatures Over Current, Over Temperature
OperatingTemperature -40°C ~ 125°C
MountingType Surface Mount
Package/Case SC-74A, SOT-753
SupplierDevicePackage SOT-23-5
BaseProductNumber LD2981

개요

Description

The LD2981CM33TR is a low-dropout voltage regulator designed to provide a stable output voltage of 3.3V. It is part of the LD2981 series, known for its efficiency in maintaining a constant output despite variations in input voltage or load conditions. The "CM33" indicates the specific model variant that outputs 3.3V, while the "TR" suffix typically denotes that the component is supplied in tape and reel packaging, suitable for automated assembly processes.
Key features of the LD2981CM33TR include a low dropout voltage, which means it can maintain the output voltage even when the input voltage is only slightly higher than the output. This feature is particularly useful in battery-powered devices where efficiency and power conservation are critical. The regulator also offers excellent line and load regulation, along with protection features like current limiting and thermal shutdown to prevent damage from overload or overheating conditions. These characteristics make the LD2981CM33TR suitable for use in portable electronics, communication devices, and other applications requiring reliable voltage regulation.

Equivalent

The LD2981CM33TR is a low-dropout (LDO) voltage regulator. Equivalent products include:
1. MIC5205-3.3YM: A similar 3.3V LDO regulator by Microchip Technology.
2. LP2985AIM5-3.3: Texas Instruments' offering with similar specifications.
3. NCP1117ST33T3G: A 3.3V LDO regulator from ON Semiconductor.
4. TLV1117-33CDCYR: Another Texas Instruments 3.3V LDO option.
Always check the specific parameters like output current, dropout voltage, and package type for compatibility.

Features

The LD2981CM33TR is a low-dropout (LDO) linear voltage regulator. Here are its key features:
1. Output Voltage: Provides a fixed output voltage of 3.3V.
2. Input Voltage: Capable of operating with an input voltage range of up to 16V.
3. Dropout Voltage: Low dropout voltage, typically around 0.2V at a current of 100 mA.
4. Output Current: Can deliver a maximum output current of 100 mA.
5. Quiescent Current: Offers low quiescent current, making it energy-efficient and suitable for battery-powered applications.
6. Thermal Protection: Includes overtemperature protection to prevent damage from overheating.
7. Short-Circuit Protection: Features built-in short-circuit protection for enhanced reliability.
8. Package: Available in a SOT-223 package, which is compact and suitable for space-constrained designs.
9. Applications: Ideal for use in consumer electronics, battery-powered devices, and other applications where low noise and power efficiency are critical.
10. Regulation: Provides good line and load regulation.
These features make the LD2981CM33TR a reliable choice for powering circuits requiring a stable 3.3V supply with low power loss.

Pinout

The LD2981CM33TR is a low-dropout (LDO) voltage regulator. It typically comes in a SOT-223 package, which has 4 pins. Here's a concise breakdown of its pin functions:
1. Pin 1 (GND): Ground pin. Connect this to the ground of the circuit.
2. Pin 2 (VIN): Input voltage pin. Connect this to the source of the voltage you intend to regulate.
3. Pin 3 (VOUT): Output voltage pin. This is where the regulated voltage is output.
4. Tab: Often connected to the ground, this serves as a heat dissipation path and sometimes used as an additional ground connection.
The LD2981CM33TR provides a fixed 3.3V output voltage and typically supports a maximum output current of around 100 mA. It is designed for low power applications where space and power efficiency are critical.

Manufacturer

The LD2981CM33TR is manufactured by STMicroelectronics. STMicroelectronics is a global semiconductor company that designs, develops, manufactures, and markets a wide range of electronic components and systems. It serves a variety of industries, including automotive, industrial, personal electronics, and communications. As a leading player in the semiconductor industry, STMicroelectronics provides innovative solutions and technologies to help customers integrate electronics into their products and improve their performance.

Application

The LD2981CM33TR is a low-dropout linear voltage regulator designed for various applications requiring stable voltage output. Key application areas include:
1. Consumer Electronics: Used in devices like smartphones and tablets for efficient power management.
2. Telecommunications: Supports stable power in communication systems and network equipment.
3. Industrial Systems: Powers sensors, controllers, and other components requiring precise voltage regulation.
4. Automotive Electronics: Provides reliable power for infotainment systems and control modules.
5. IoT Devices: Ensures consistent power in low-power IoT applications.
Its low-dropout characteristics, low quiescent current, and high output stability make it suitable for battery-powered and portable applications.

Package

The LD2981CM33TR is a low-dropout voltage regulator packaged in a SOT-23-5 form factor. This small surface-mount package is commonly used in applications where space is limited, providing efficient voltage regulation with low dropout voltage.

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