LD3985G28R

Product Overview

Category

LD3985G28R belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

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

Package

LD3985G28R is available in a small package, typically SOT-23 or similar.

Essence

The essence of LD3985G28R lies in its ability to provide stable and regulated voltage output.

Packaging/Quantity

LD3985G28R is commonly packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Input Voltage Range: 2.5V to 6V
• Output Voltage: 2.8V
• Dropout Voltage: 200mV (typical)
• Quiescent Current: 50µA (typical)
• Maximum Output Current: 150mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

LD3985G28R 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 with low input voltages.
• High output voltage accuracy provides precise voltage regulation.
• Low quiescent current minimizes power consumption when the regulator is idle.
• Thermal shutdown protection prevents damage due to excessive temperature.
• Short-circuit current limit protects the regulator and connected components from damage during a short circuit.

Advantages and Disadvantages

Advantages

• Reliable voltage regulation
• Compact size
• Wide operating temperature range
• Low power consumption

Disadvantages

• Limited maximum output current
• Requires external components for stability

Working Principles

LD3985G28R operates based on the principle of a linear voltage regulator. It uses a pass transistor to regulate the output voltage by adjusting the current flow through it. 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

LD3985G28R finds applications in various electronic devices, including but not limited to: - Battery-powered devices - Portable audio players - Mobile phones - Wearable devices - IoT modules

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to LD3985G28R are: - LM1117-2.8 - MCP1700-2802E/TO - TS5205-2.8

These models offer similar voltage regulation capabilities and can be used as substitutes depending on specific requirements.

In conclusion, LD3985G28R is a voltage regulator known for its low dropout voltage, high output voltage accuracy, and low quiescent current. It is commonly used in battery-powered devices, portable audio players, mobile phones, wearable devices, and IoT modules. While it has limitations in terms of maximum output current and external component requirements, it offers reliable voltage regulation in a compact package.