LD3985G27R

Product Overview

Category: Integrated Circuit (IC)
Use: Voltage Regulator
Characteristics: Low dropout, high accuracy, low quiescent current
Package: TO-252-3 (DPAK)
Essence: Regulates input voltage to a stable output voltage
Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

Input Voltage Range: 2.5V to 6.5V
Output Voltage: 2.7V
Dropout Voltage: 300mV at 150mA
Quiescent Current: 50µA
Load Regulation: ±0.1%
Line Regulation: ±0.05%
Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD3985G27R has three pins:

VIN (Pin 1): Input voltage pin
GND (Pin 2): Ground pin
VOUT (Pin 3): Output voltage pin

Functional Features

Low dropout voltage ensures efficient regulation even with small input-output voltage differentials.
High accuracy provides precise output voltage regulation.
Low quiescent current minimizes power consumption in standby mode.
Thermal shutdown protection prevents the IC from overheating.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows for versatile applications. - Excellent load and line regulation ensure stable output voltage. - Compact TO-252-3 package facilitates easy integration into various circuit designs.

Disadvantages: - Limited output voltage options restrict its use in certain applications. - Higher dropout voltage compared to some alternative models may result in higher power dissipation.

Working Principles

The LD3985G27R is a linear voltage regulator that uses a PNP 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 voltage.

Detailed Application Field Plans

The LD3985G27R is commonly used in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable audio players - Mobile phones - Wireless communication modules - Industrial control systems

Detailed and Complete Alternative Models

LM1117-2.7: Similar specifications and pin configuration, available in different package options.
LT1763-2.7: Lower dropout voltage, higher accuracy, and adjustable output voltage option.
MCP1702-2.7: Lower quiescent current, wider input voltage range, and smaller package size.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van LD3985G27R in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of LD3985G27R in technical solutions:

Q: What is LD3985G27R? A: LD3985G27R 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 supported by LD3985G27R? A: The LD3985G27R supports an input voltage range from 2.5V to 6V.
Q: What is the output voltage provided by LD3985G27R? A: The LD3985G27R provides a fixed output voltage of 2.7V.
Q: What is the maximum output current that LD3985G27R can handle? A: The LD3985G27R can handle a maximum output current of 150mA.
Q: Is LD3985G27R suitable for battery-powered applications? A: Yes, LD3985G27R is suitable for battery-powered applications as it has low quiescent current and operates efficiently with low dropout voltage.
Q: Can LD3985G27R be used in automotive applications? A: Yes, LD3985G27R is designed to meet automotive requirements and can be used in automotive applications.
Q: Does LD3985G27R have built-in thermal protection? A: Yes, LD3985G27R has built-in thermal shutdown protection to prevent overheating and damage.
Q: Can LD3985G27R operate in harsh environments? A: Yes, LD3985G27R has a wide operating temperature range and is capable of operating in harsh environments.
Q: What is the typical dropout voltage of LD3985G27R? A: The typical dropout voltage of LD3985G27R is around 300mV at 150mA load current.
Q: Are there any application notes or reference designs available for LD3985G27R? A: Yes, the manufacturer provides application notes and reference designs that can help in implementing LD3985G27R in various technical solutions.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's recommendations for LD3985G27R.