LD2985BM18R

Product Overview

Category

LD2985BM18R 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

LD2985BM18R comes in a small surface-mount package.

Essence

The essence of LD2985BM18R lies in its ability to provide stable and regulated voltage output.

Packaging/Quantity

LD2985BM18R is typically packaged in reels or tubes, with varying quantities depending on the supplier.

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage: 1.8V
• Dropout Voltage: 300mV (typical)
• Quiescent Current: 50µA (typical)
• Output Current: Up to 150mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

LD2985BM18R has three pins:

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

Functional Features

• Low Dropout Voltage: LD2985BM18R exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: The regulator consumes minimal current when there is no load, reducing power consumption and extending battery life.
• High Output Voltage Accuracy: LD2985BM18R provides precise and stable output voltage, ensuring reliable performance of connected devices.
• Thermal Shutdown Protection: In case of excessive temperature, the regulator automatically shuts down to prevent damage.
• Short-Circuit Current Limit: LD2985BM18R has built-in protection against short circuits, safeguarding the circuitry.

Advantages and Disadvantages

Advantages

• Low dropout voltage ensures efficient regulation.
• Low quiescent current reduces power consumption.
• High output voltage accuracy ensures reliable performance.
• Thermal shutdown protection prevents damage due to excessive temperature.
• Short-circuit current limit protects the circuitry.

Disadvantages

• Limited output current capacity (up to 150mA).
• Restricted input voltage range (2.5V to 16V).

Working Principles

LD2985BM18R 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 pins. The regulator compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

LD2985BM18R finds applications in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable consumer electronics - Industrial control systems - Automotive electronics - Medical equipment

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to LD2985BM18R are: - LM1117-1.8 - MCP1700-1802E/TO - NCP1117ST18T3G - TS2937CP-1.8

These models offer similar functionality and characteristics, providing options for different design requirements.

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