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UA78L05CPK

Name: UA78L05CPK
Rating: 4.7 (12 reviews)

IC REG LINEAR 5V 100MA SOT89-3

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規格

Part Status	Active
Output Configuration	Positive
Output Type	Fixed
Number of Regulators	1
Voltage - Input (Max)	20V
Voltage - Output (Min/Fixed)	5V
Voltage Dropout (Max)	1.7V @ 40mA
Current - Output	100mA
PSRR	49dB (120Hz)
Protection Features	Over Current, Over Temperature, Reverse Polarity, Short Circuit
Operating Temperature	0°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	TO-243AA
Supplier Device Package	SOT-89-3
Base Product Number	UA78L05

概述

Description

The UA78L05CPK is a low-dropout (LDO) voltage regulator designed to provide a stable output voltage of 5V with a maximum output current of 100mA. It belongs to the UA78L series, which includes various fixed output voltages. This component is commonly used in power supply applications for microcontrollers, sensors, and other low-power devices.
Key features include:
- Input Voltage Range: Typically from 7V to 30V.
- Low Dropout Voltage: Ensures efficient performance even with minimal voltage difference between input and output.
- Thermal Protection: Prevents damage due to overheating.
- Compact Package: Available in a TO-92 or similar package, making it suitable for space-constrained applications.
The UA78L05CPK is popular in DIY electronics and commercial products due to its reliability, ease of use, and low cost. It requires minimal external components, usually just input and output capacitors to ensure stability.

Features

The UA78L05CPK is a low-dropout (LDO) voltage regulator designed to provide a stable output voltage of 5V. Key features include:
1. Output Current: Capable of supplying up to 100 mA of output current.
2. Input Voltage Range: Accepts input voltages from 7V to 35V.
3. Low Dropout Voltage: Typically around 40 mV at light loads, ensuring efficient operation with minimal voltage overhead.
4. Thermal Protection: Includes internal thermal shutdown to prevent overheating.
5. Short-Circuit Protection: Provides short-circuit protection to enhance reliability.
6. Compact Package: Available in a TO-220 package for easy mounting and heat dissipation.
7. Low Noise: Designed to minimize output noise, making it suitable for sensitive applications.
8. Temperature Range: Operates within a temperature range of -40°C to +125°C.
Overall, the UA78L05CPK is ideal for powering low-voltage devices in various electronic applications, including consumer electronics and industrial equipment.

Package

The UA78L05CPK is packaged in a TO-220 form factor, which is a type of plastic package commonly used for linear voltage regulators. This package provides efficient heat dissipation and is suitable for applications requiring moderate power levels.

Pinout

The UA78L05CPK is a low-dropout linear voltage regulator with a pin count of 3. Its pinout and functions are as follows:
1. Input (Vin): This is the first pin where the unregulated input voltage is supplied. It typically accepts voltage from 7V to 20V.

2. Ground (GND): The second pin serves as the ground reference for the regulator.
3. Output (Vout): The third pin provides a regulated output voltage of 5V.
The UA78L05CPK is designed for low current applications, typically up to 100mA. It is widely used in various electronic circuits to provide a stable 5V supply from higher voltage sources.

Manufacturer

The UA78L05CPK is manufactured by Texas Instruments, Inc. Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. Founded in 1930, TI designs and manufactures a wide range of electronics, including analog chips, embedded processors, and various other semiconductor devices. The company is well-known for its innovation in the field of integrated circuits and plays a significant role in the development of technologies used in consumer electronics, automotive systems, industrial applications, and more. TI is recognized for its commitment to quality and technological advancement, making it a key player in the semiconductor industry.

Application

The UA78L05CPK is a low-dropout voltage regulator primarily used in electronic circuits for providing a stable output voltage of 5V. Its application areas include powering microcontrollers, logic circuits, and sensors in embedded systems, automotive electronics, and battery-operated devices. It also finds use in communication equipment, consumer electronics, and small signal processing applications where a reliable power supply is crucial.

Equivalent

The UA78L05CPK is a low-dropout voltage regulator providing a fixed output of 5V. Equivalent products include:
1. LM7805 (standard version)
2. LM1117-5.0 (low dropout)
3. MCP1700-5002E (low dropout, higher efficiency)
4. LT1086-5 (adjustable, low dropout)
5. LM317 (adjustable, but requires external resistors)
Always check specifications for compatibility with your application.