LD2985BM35R

Product Overview

Category

The LD2985BM35R 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
• Wide input voltage range

Package

The LD2985BM35R comes in a small SOT-23 package.

Essence

The essence of LD2985BM35R lies in its ability to regulate voltage efficiently and accurately.

Packaging/Quantity

The LD2985BM35R is typically packaged in reels, with 3000 units per reel.

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage: 3.5V
• Dropout Voltage: 400mV at 100mA
• Quiescent Current: 50µA
• Output Current: Up to 150mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD2985BM35R has three pins:

1. VIN (Input Voltage)
2. GND (Ground)
3. VOUT (Output Voltage)

Functional Features

• Low Dropout Voltage: The LD2985BM35R exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: With a low quiescent current, the LD2985BM35R minimizes power consumption when the load is light or inactive.
• High Output Voltage Accuracy: This voltage regulator provides high output voltage accuracy, ensuring precise voltage regulation for sensitive electronic components.
• Thermal Shutdown Protection: The LD2985BM35R incorporates thermal shutdown protection, preventing damage due to excessive heat.
• Short-Circuit Current Limit: It features a short-circuit current limit, protecting the regulator and the connected circuitry from excessive current flow.
• Wide Input Voltage Range: The LD2985BM35R can operate within a wide input voltage range, making it suitable for various applications.

Advantages and Disadvantages

Advantages

• Efficient voltage regulation
• Low power consumption
• Accurate output voltage
• Thermal protection
• Short-circuit protection
• Versatile application range

Disadvantages

• Limited output current capacity (up to 150mA)
• SOT-23 package may require additional space in compact designs

Working Principles

The LD2985BM35R 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 that the output voltage remains stable and within the desired range.

Detailed Application Field Plans

The LD2985BM35R finds applications in various fields, including but not limited to: - Battery-powered devices - Portable electronics - Automotive systems - Industrial control systems - Communication equipment

Detailed and Complete Alternative Models

Some alternative models to LD2985BM35R include: - LM1117-3.3: A popular 3.3V linear voltage regulator with similar characteristics. - LT1761-3.3: A low dropout 3.3V voltage regulator with high accuracy and low quiescent current. - MCP1700-3302E: A low dropout 3.3V regulator with a wide input voltage range and low quiescent current.

These alternative models offer similar functionality and can be considered as substitutes depending on specific requirements.

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