L4949ED

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L4949ED

+BOM

IC REG LINEAR 5V 100MA 8-SOIC

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Specifications

Attribute Value
Part Status Obsolete
Output Configuration Positive
Output Type Fixed
Number of Regulators 1
Voltage - Input (Max) 28V
Voltage - Output (Min/Fixed) 5V
Voltage Dropout (Max) 0.5V @ 100mA
Current - Output 100mA
Current - Quiescent (Iq) 300 µA
Control Features Reset Output
Protection Features Over Temperature, Short Circuit
Operating Temperature -40°C ~ 125°C
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC
Base Product Number L4949
Current - Supply (Max) 5 mA

Overview

Description

L4949ED is a high-performance, low-dropout (LDO) voltage regulator designed for various electronic applications. It provides a stable output voltage with minimal noise, making it ideal for sensitive devices. Key features include a wide input voltage range, excellent load and line regulation, and a low quiescent current, which enhances efficiency in battery-powered applications.
The L4949ED typically supports multiple output voltages, allowing for flexibility in design. It also incorporates protection features such as thermal shutdown and current limiting, ensuring reliable operation under varying conditions. This component is often used in telecommunications, consumer electronics, and automotive applications, where power integrity is crucial.
Engineers appreciate the L4949ED for its compact footprint and ease of integration into existing designs. Its performance characteristics and robust features make it a popular choice for projects requiring reliable voltage regulation.

Equivalent

The L4949ED is a voltage regulator IC from STMicroelectronics. Equivalent products include the LM317 (from Texas Instruments), LM7812 (fixed output variant), and the LM108 (also from TI). Other compatible options are the LDO regulators from ON Semiconductor or Microchip's MCP1700 series, depending on specific application needs like output voltage and current requirements. Always check the datasheets for pin configuration and specifications to ensure compatibility.

Features

The L4949ED is a versatile, compact power management IC designed for various applications, including mobile devices and portable electronics. Key features include:
1. High Efficiency: It provides efficient power conversion, minimizing energy loss and heat generation.
2. Multiple Output Channels: It typically supports multiple output voltages, allowing for flexible power supply configurations.
3. Integrated Protection: Features such as over-voltage, over-current, and thermal protection enhance reliability and safety.
4. Low Quiescent Current: Ensures minimal power consumption in standby mode, extending battery life in portable applications.
5. Adjustable Output Voltage: Enables customization of output voltage levels as per application requirements.
6. Small Form Factor: Compact packaging facilitates easy integration into space-constrained designs.
Overall, the L4949ED is ideal for applications requiring efficient and reliable power management solutions.

Pinout

The L4949ED is a voltage regulator IC with a total of 8 pins. Its primary functions include providing a fixed output voltage and regulating the output current for various applications. The pin configuration is as follows:
1. Pin 1 (Input): Connects to the input voltage supply.
2. Pin 2 (Ground): Common ground connection.
3. Pin 3 (Output): Provides the regulated output voltage.
4. Pin 4 (Not connected): Not internally connected, can be left floating.
5. Pin 5 (Feedback): Used for voltage feedback to maintain output regulation.
6. Pin 6 (Compensate): Connects to a capacitor for stability and compensation.
7. Pin 7 (Thermal Protection): Monitors temperature to prevent overheating.
8. Pin 8 (Enable/Disable): Used to enable or disable the regulator.
This IC is commonly used in power supply applications for its reliable voltage regulation and low dropout performance.

Manufacturer

The L4949ED is manufactured by STMicroelectronics, a multinational semiconductor company. STMicroelectronics specializes in designing and manufacturing a wide range of semiconductor products, including microcontrollers, analog devices, power management solutions, sensors, and integrated circuits. Founded in 1987, the company is headquartered in Geneva, Switzerland, and operates globally with a focus on the automotive, industrial, personal electronics, and communication sectors.
The L4949ED specifically is a voltage regulator, often used in various electronic applications to provide stable voltage levels. STMicroelectronics is known for its innovation in the semiconductor industry, contributing to advancements in technology across multiple fields, including automotive electronics, IoT devices, and consumer electronics. The company emphasizes sustainability and energy efficiency in its product development.

Application

The L4949ED is a voltage regulator IC primarily used in automotive applications. Its main areas of application include:
1. Power Supply Regulation: It provides stable voltage outputs for automotive electronics.
2. Battery Management Systems: It helps in monitoring and managing battery performance.
3. Sensor Powering: It powers various sensors in vehicles, ensuring consistent operation.
4. Microcontroller Supply: It supplies power to automotive microcontrollers and other critical components.
5. LED Lighting: It's used in regulating voltage for automotive LED lighting systems.
Overall, the L4949ED is essential for reliable power management in modern vehicles.

Package

The L4949ED is typically packaged in a PowerSO-20 package type, which is a compact, surface-mount package designed for efficient thermal performance and space-saving in electronic circuits.