STMicroelectronics
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LD3985M33R
বিস্তারিত দেখুন ডেটাশিট

LD3985M33R

Product Overview

Category

The LD3985M33R belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

  • Low dropout voltage
  • Low quiescent current
  • High output voltage accuracy
  • Thermal shutdown protection
  • Short-circuit current limit

Package

The LD3985M33R comes in a small SOT-23 package.

Essence

The essence of LD3985M33R lies in its ability to provide stable and regulated voltage output in various electronic applications.

Packaging/Quantity

The LD3985M33R is typically packaged in reels, with each reel containing a specific quantity of units.

Specifications

  • Input Voltage Range: 2.5V to 6V
  • Output Voltage: 3.3V
  • Dropout Voltage: 300mV (typical)
  • Quiescent Current: 50µA (typical)
  • Maximum Output Current: 150mA
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD3985M33R has three pins:

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. VOUT: Output voltage pin

Functional Features

  • Low dropout voltage ensures efficient regulation even when the input voltage is close to the desired output voltage.
  • Low quiescent current minimizes power consumption during standby or idle modes.
  • High output voltage accuracy provides precise voltage regulation for sensitive electronic components.
  • Thermal shutdown protection prevents damage due to excessive temperature.
  • Short-circuit current limit protects the regulator and connected devices from excessive current flow.

Advantages and Disadvantages

Advantages

  • Small package size allows for space-efficient integration into electronic circuits.
  • Wide input voltage range enables compatibility with various power sources.
  • Low dropout voltage ensures efficient operation even with low input voltages.
  • Thermal shutdown protection enhances reliability and safety.

Disadvantages

  • Limited maximum output current may restrict its use in high-power applications.
  • Requires external components for stability and filtering.

Working Principles

The LD3985M33R operates based on the principle of linear voltage regulation. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. This allows it to maintain a stable output voltage despite variations in the input voltage or load conditions.

Detailed Application Field Plans

The LD3985M33R finds application in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable consumer electronics - IoT (Internet of Things) devices - Embedded systems - Automotive electronics - Industrial control systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to LD3985M33R include: - LM1117-3.3 - MCP1700-3302E/TO - TS2950CT-3.3 - LP2985-33DBVR

These alternatives can be considered based on specific requirements and availability.

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প্রযুক্তিগত সমাধানে LD3985M33R এর প্রয়োগ সম্পর্কিত 10টি সাধারণ প্রশ্ন ও উত্তর তালিকাভুক্ত করুন

Sure! Here are 10 common questions and answers related to the application of LD3985M33R in technical solutions:

  1. Q: What is LD3985M33R? A: LD3985M33R is a low dropout (LDO) voltage regulator IC that provides a fixed output voltage of 3.3V.

  2. Q: What is the input voltage range for LD3985M33R? A: The input voltage range for LD3985M33R is typically between 2.5V and 6V.

  3. Q: What is the maximum output current of LD3985M33R? A: LD3985M33R can provide a maximum output current of 150mA.

  4. Q: Can LD3985M33R handle higher input voltages than 6V? A: No, LD3985M33R is not designed to handle input voltages higher than 6V. It may get damaged if the input voltage exceeds this limit.

  5. Q: Is LD3985M33R suitable for battery-powered applications? A: Yes, LD3985M33R is well-suited for battery-powered applications due to its low dropout voltage and low quiescent current.

  6. Q: Does LD3985M33R require any external components for operation? A: Yes, LD3985M33R requires a minimum of two external capacitors - an input capacitor and an output capacitor - for stable operation.

  7. Q: Can LD3985M33R be used in both analog and digital circuits? A: Yes, LD3985M33R can be used in both analog and digital circuits as long as the input and output voltage requirements are within its specifications.

  8. Q: What is the thermal shutdown feature of LD3985M33R? A: The thermal shutdown feature of LD3985M33R protects the IC from overheating by shutting down the output when the junction temperature exceeds a certain threshold.

  9. Q: Can LD3985M33R be used in automotive applications? A: Yes, LD3985M33R can be used in automotive applications as it meets the necessary requirements for automotive electronics.

  10. Q: Are there any alternative voltage regulator options to LD3985M33R? A: Yes, there are several alternative LDO voltage regulators available in the market. Some popular alternatives include LM1117, MCP1700, and LP2985.

Please note that these answers are general and may vary depending on specific application requirements.