LT1121IN8-5#PBF
Product Overview
Category
The LT1121IN8-5#PBF belongs to the category of voltage regulators.
Use
It is primarily used for regulating voltage in electronic circuits.
Characteristics
- Input Voltage Range: 2.7V to 20V
- Output Voltage: 5V
- Maximum Output Current: 500mA
- Dropout Voltage: 300mV
- Low Quiescent Current: 75µA
- Package Type: TO-220-8
- Operating Temperature Range: -40°C to 125°C
Package and Quantity
The LT1121IN8-5#PBF comes in a TO-220-8 package. It is typically sold in quantities of one unit per package.
Specifications
- Input Voltage Range: 2.7V to 20V
- Output Voltage: 5V ±2%
- Maximum Output Current: 500mA
- Dropout Voltage: 300mV (at 500mA)
- Line Regulation: 0.02% (typical)
- Load Regulation: 0.04% (typical)
- Quiescent Current: 75µA (typical)
- Ripple Rejection: 70dB (typical)
- Shutdown Current: 1µA (maximum)
Detailed Pin Configuration
The LT1121IN8-5#PBF has eight pins arranged as follows:
Pin 1: Input Voltage (VIN)
Pin 2: Ground (GND)
Pin 3: Output Voltage (VOUT)
Pin 4: Not Connected (NC)
Pin 5: Not Connected (NC)
Pin 6: Not Connected (NC)
Pin 7: Not Connected (NC)
Pin 8: Not Connected (NC)
Functional Features
- Low dropout voltage for efficient regulation.
- Low quiescent current for power-saving applications.
- Wide input voltage range for versatility.
- Excellent line and load regulation for stable output voltage.
- Thermal shutdown and current limit protection.
Advantages
- Compact TO-220-8 package for easy integration into circuits.
- Wide input voltage range allows for various power sources.
- Low dropout voltage ensures efficient power conversion.
- Low quiescent current minimizes power consumption.
- Excellent line and load regulation provides stable output voltage.
Disadvantages
- Maximum output current limited to 500mA.
- Dropout voltage of 300mV may not be suitable for ultra-low power applications.
Working Principles
The LT1121IN8-5#PBF is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage, adjusting the pass transistor's resistance to maintain a constant output voltage. The device also incorporates thermal shutdown and current limit protection to ensure safe operation.
Detailed Application Field Plans
The LT1121IN8-5#PBF can be used in various applications, including: - Battery-powered devices - Portable electronics - Automotive systems - Industrial control systems - Embedded systems
Detailed and Complete Alternative Models
Some alternative models that offer similar functionality to the LT1121IN8-5#PBF include: - LM1117-5.0 - ADP3339AKCZ-5.0 - MAX6035AAUR50-T
These alternatives provide comparable voltage regulation capabilities and are available in different package options to suit specific design requirements.
In conclusion, the LT1121IN8-5#PBF is a voltage regulator with a wide input voltage range, low dropout voltage, and low quiescent current. It offers excellent line and load regulation, making it suitable for various applications. However, its maximum output current is limited to 500mA, and the dropout voltage may not be ideal for ultra-low power applications. Alternative models such as LM1117-5.0, ADP3339AKCZ-5.0, and MAX6035AAUR50-T can be considered based on specific design needs.
技術ソリューションにおける LT1121IN8-5#PBF の適用に関連する 10 件の一般的な質問と回答をリストします。
Sure! Here are 10 common questions and answers related to the application of LT1121IN8-5#PBF in technical solutions:
Q1: What is the LT1121IN8-5#PBF? A1: The LT1121IN8-5#PBF is a low dropout linear regulator IC that provides a fixed output voltage of 5V.
Q2: What is the input voltage range for the LT1121IN8-5#PBF? A2: The input voltage range for the LT1121IN8-5#PBF is typically between 2.5V and 20V.
Q3: What is the maximum output current of the LT1121IN8-5#PBF? A3: The LT1121IN8-5#PBF can provide a maximum output current of 500mA.
Q4: Can the LT1121IN8-5#PBF be used in battery-powered applications? A4: Yes, the LT1121IN8-5#PBF is suitable for battery-powered applications due to its low dropout voltage and low quiescent current.
Q5: Is the LT1121IN8-5#PBF short-circuit protected? A5: Yes, the LT1121IN8-5#PBF has built-in short-circuit protection to prevent damage in case of a short circuit at the output.
Q6: Can the LT1121IN8-5#PBF handle high temperatures? A6: Yes, the LT1121IN8-5#PBF is designed to operate over a wide temperature range, typically from -40°C to 125°C.
Q7: Does the LT1121IN8-5#PBF require any external components for operation? A7: Yes, the LT1121IN8-5#PBF requires a few external components such as input and output capacitors for stability.
Q8: Can the LT1121IN8-5#PBF be used in automotive applications? A8: Yes, the LT1121IN8-5#PBF is suitable for automotive applications as it meets the necessary automotive standards.
Q9: What is the dropout voltage of the LT1121IN8-5#PBF? A9: The dropout voltage of the LT1121IN8-5#PBF is typically around 300mV at full load.
Q10: Can the LT1121IN8-5#PBF be used to power sensitive analog circuits? A10: Yes, the LT1121IN8-5#PBF is designed to provide low noise and high PSRR (Power Supply Rejection Ratio), making it suitable for powering sensitive analog circuits.
Please note that these answers are general and may vary depending on specific application requirements.