L4925

Product Overview

Category: Integrated Circuit (IC)
Use: Voltage Regulator
Characteristics: High precision, low dropout voltage, adjustable output voltage
Package: TO-220
Essence: Linear voltage regulator
Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

Input Voltage: 4.5V to 26V
Output Voltage: Adjustable from 1.2V to 25V
Output Current: Up to 1.5A
Dropout Voltage: Typically 0.6V at 1A load current
Line Regulation: Typically 0.02%/V
Load Regulation: Typically 0.04%/A
Quiescent Current: Typically 10mA
Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L4925 IC has the following pin configuration:

VIN: Input voltage pin
GND: Ground pin
ADJ: Output voltage adjustment pin
VOUT: Output voltage pin

Functional Features

High precision voltage regulation
Low dropout voltage for efficient power conversion
Adjustable output voltage to meet specific requirements
Overcurrent and thermal protection
Short-circuit protection
Fast transient response

Advantages and Disadvantages

Advantages

High precision voltage regulation ensures stable output
Low dropout voltage minimizes power dissipation
Adjustable output voltage provides flexibility
Built-in protection features enhance reliability
Fast transient response for quick load changes

Disadvantages

Limited maximum output current of 1.5A
Requires external components for proper operation
Higher quiescent current compared to some other voltage regulators

Working Principles

The L4925 is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with a fraction of the output voltage, adjusting the pass transistor accordingly to maintain a stable output. The adjustable output voltage is set using an external resistor connected to the ADJ pin.

Detailed Application Field Plans

The L4925 is commonly used in various applications where precise voltage regulation is required. Some typical application fields include:

Power supplies for microcontrollers and digital circuits
Battery-powered devices
Automotive electronics
Industrial control systems
Audio amplifiers

Detailed and Complete Alternative Models

LM317: Adjustable positive voltage regulator with similar specifications
LM1117: Low dropout voltage regulator with fixed output voltage options
LT1086: High current, adjustable voltage regulator with low dropout voltage

These alternative models offer similar functionality and can be considered as alternatives to the L4925 based on specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L4925 v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L4925 in technical solutions:

Q: What is L4925? A: L4925 is a voltage regulator IC (integrated circuit) commonly used in technical solutions to regulate and stabilize voltage levels.
Q: What is the input voltage range for L4925? A: The input voltage range for L4925 is typically between 4.5V and 40V.
Q: What is the output voltage range for L4925? A: The output voltage range for L4925 can be adjusted from 1.25V to 37V using external resistors.
Q: What is the maximum output current that L4925 can handle? A: L4925 can handle a maximum output current of up to 1.5A.
Q: Is L4925 suitable for low-power applications? A: Yes, L4925 is suitable for low-power applications as it has a low quiescent current and standby current consumption.
Q: Can L4925 handle high-temperature environments? A: Yes, L4925 is designed to operate reliably in high-temperature environments, with a maximum junction temperature of 150°C.
Q: Does L4925 have built-in protection features? A: Yes, L4925 includes built-in protection features such as thermal shutdown, current limiting, and short-circuit protection.
Q: Can L4925 be used in battery-powered applications? A: Yes, L4925 can be used in battery-powered applications as it has a wide input voltage range and low power consumption.
Q: Is L4925 suitable for both step-up and step-down voltage regulation? A: Yes, L4925 can be used for both step-up and step-down voltage regulation by adjusting the external resistors.
Q: Are there any application notes or reference designs available for L4925? A: Yes, the manufacturer of L4925 provides application notes and reference designs that can help in implementing the IC effectively in various technical solutions.

Please note that the answers provided here are general and may vary depending on specific datasheet specifications and application requirements.