LD2985BM28R

Product Overview

Category

LD2985BM28R 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

LD2985BM28R comes in a small package, typically a SOT-23-5 or similar.

Essence

The essence of LD2985BM28R lies in its ability to provide stable and regulated voltage output for various electronic applications.

Packaging/Quantity

LD2985BM28R is commonly available in reels or tubes, with quantities varying depending on the supplier.

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage: 2.8V
• Dropout Voltage: 300mV (typical)
• Quiescent Current: 50µA (typical)
• Output Current: Up to 150mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

LD2985BM28R has five pins arranged as follows:

```

---

| | --| V IN|-- Pin 1: Input Voltage --|____| | | --| GND|-- Pin 2: Ground --|____| | | --| V O |-- Pin 3: Output Voltage --|____| | | --| NC |-- Pin 4: No Connection --|____| | | --| EN |-- Pin 5: Enable (Shutdown) Control --|____| ```

Functional Features

• Low Dropout Voltage: LD2985BM28R exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: The device consumes minimal current in standby mode, reducing power consumption and extending battery life.
• High Output Voltage Accuracy: LD2985BM28R provides precise output voltage regulation, ensuring stable performance of connected electronic components.
• Thermal Shutdown Protection: The regulator incorporates a thermal shutdown mechanism that protects it from overheating, preventing damage to the device.
• Short-Circuit Current Limit: LD2985BM28R has built-in protection against excessive current flow during a short circuit, safeguarding the circuitry.

Advantages and Disadvantages

Advantages

• Efficient voltage regulation with low dropout voltage
• Low quiescent current for reduced power consumption
• Accurate output voltage for stable performance
• Thermal shutdown protection prevents overheating
• Short-circuit current limit protects the circuit

Disadvantages

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

Working Principles

LD2985BM28R operates based on the principle of linear voltage regulation. It utilizes a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. The internal circuitry compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

LD2985BM28R finds applications in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable consumer electronics - Embedded systems - Industrial control systems - Automotive electronics - Communication equipment

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to LD2985BM28R include: - LM1117-2.8: A popular voltage regulator with similar specifications and features. - MCP1702-2802: Another voltage regulator offering stable 2.8V output. - AMS1117-2.8: A low dropout voltage regulator suitable for various applications.

These alternative models provide similar functionality and can be used as substitutes depending on specific requirements.

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