LD1117DT18CTR

Product Overview

Category: Voltage Regulator
Use: Provides a stable output voltage for electronic circuits
Characteristics:
- Low dropout voltage
- High output current capability
- Thermal overload protection
- Short circuit protection
Package: TO-252 (DPAK)
Essence: Linear voltage regulator
Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

Output Voltage: 1.8V
Dropout Voltage: 1.2V (typical)
Output Current: Up to 800mA
Input Voltage Range: 4.75V to 15V
Line Regulation: ±0.2% (typical)
Load Regulation: ±0.4% (typical)
Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LD1117DT18CTR has three pins:

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

Functional Features

Low dropout voltage ensures efficient regulation even with small input-output voltage differentials.
High output current capability allows it to power a wide range of electronic devices.
Thermal overload protection prevents the regulator from overheating.
Short circuit protection safeguards the regulator and connected components from damage.

Advantages

Stable output voltage: The LD1117DT18CTR provides a constant and reliable output voltage, ensuring proper functioning of electronic circuits.
Easy to use: With its simple three-pin configuration, the regulator can be easily integrated into various circuit designs.
Wide input voltage range: The regulator accepts a broad range of input voltages, making it suitable for diverse applications.
Compact package: The TO-252 package offers a compact form factor, saving space on PCBs.

Disadvantages

Limited output current: The LD1117DT18CTR has a maximum output current of 800mA, which may not be sufficient for high-power applications.
Dropout voltage: The regulator requires a minimum input-output voltage differential of 1.2V, which can limit its usability in low voltage scenarios.

Working Principles

The LD1117DT18CTR 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 and adjusting the pass transistor accordingly. This ensures a stable output voltage despite variations in the input voltage or load conditions.

Application Field Plans

The LD1117DT18CTR is commonly used in various electronic devices and systems, including:

Battery-powered devices: Provides a stable voltage supply for portable electronics such as smartphones, tablets, and digital cameras.
Industrial control systems: Ensures reliable power for sensors, actuators, and microcontrollers in industrial automation applications.
Automotive electronics: Used in automotive modules, infotainment systems, and engine control units to maintain stable voltage levels.
Communication equipment: Powers routers, switches, and other network devices, ensuring uninterrupted connectivity.

Alternative Models

LM1117-1.8
LT1117-1.8
MCP1825S-1802E/DB

These alternative models offer similar functionality and specifications to the LD1117DT18CTR and can be considered as replacements depending on specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací LD1117DT18CTR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of LD1117DT18CTR in technical solutions:

Q: What is LD1117DT18CTR? A: LD1117DT18CTR is a low dropout voltage regulator that provides a fixed output voltage of 1.8V.
Q: What is the maximum input voltage for LD1117DT18CTR? A: The maximum input voltage for LD1117DT18CTR is typically 15V, but it can handle up to 20V in some cases.
Q: What is the dropout voltage of LD1117DT18CTR? A: The dropout voltage of LD1117DT18CTR is typically around 1.2V at a load current of 800mA.
Q: Can LD1117DT18CTR be used to regulate higher voltages? A: No, LD1117DT18CTR is specifically designed to regulate voltages down to 1.8V. It cannot be used to regulate higher voltages.
Q: What is the maximum output current of LD1117DT18CTR? A: LD1117DT18CTR can provide a maximum output current of 800mA.
Q: Is LD1117DT18CTR suitable for battery-powered applications? A: Yes, LD1117DT18CTR is suitable for battery-powered applications as it has a low quiescent current and low dropout voltage.
Q: Does LD1117DT18CTR require any external components for operation? A: Yes, LD1117DT18CTR requires an input capacitor and an output capacitor for stability and proper operation.
Q: Can LD1117DT18CTR handle short-circuit conditions? A: Yes, LD1117DT18CTR has built-in short-circuit protection that prevents damage to the device under short-circuit conditions.
Q: Can LD1117DT18CTR operate in high-temperature environments? A: Yes, LD1117DT18CTR can operate in a wide temperature range, typically from -40°C to 125°C.
Q: Is LD1117DT18CTR available in different package options? A: Yes, LD1117DT18CTR is available in various package options, such as SOT-223, TO-252, and DPAK, to suit different application requirements.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's specifications for LD1117DT18CTR.