LD2985AM30R

Product Overview

• Category: Voltage Regulator
• Use: Provides a stable output voltage for electronic devices
• Characteristics: Low dropout, low quiescent current, high accuracy
• Package: SOT-23
• Essence: Regulates input voltage to a fixed output voltage
• Packaging/Quantity: Tape and reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V - 16V
• Output Voltage: 3.0V
• Output Current: 150mA
• Dropout Voltage: 300mV
• Quiescent Current: 50µA
• Line Regulation: ±0.1%
• Load Regulation: ±0.4%
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LD2985AM30R 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 small input-output voltage differentials.
• Low quiescent current minimizes power consumption in standby mode.
• High accuracy provides a precise and stable output voltage.
• Thermal shutdown protection prevents damage due to excessive temperature.

Advantages

• Compact SOT-23 package allows for space-saving integration into various electronic devices.
• Wide input voltage range enables compatibility with a wide range of power sources.
• Excellent line and load regulation ensure a stable output voltage under varying conditions.
• Low dropout voltage reduces power dissipation and extends battery life.

Disadvantages

• Limited output current may not be suitable for high-power applications.
• Requires external capacitors for stability, increasing component count and cost.

Working Principles

The LD2985AM30R is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a constant output voltage.

Detailed Application Field Plans

• Battery-powered devices: Provides stable power supply for portable electronics such as smartphones, tablets, and wearable devices.
• Industrial automation: Suitable for powering sensors, actuators, and control circuits in industrial applications.
• Automotive electronics: Used in automotive systems like infotainment systems, lighting controls, and engine management units.

Alternative Models

• LD2981AM30R: 3.0V output voltage, 100mA output current
• LD2983AM30R: 3.0V output voltage, 500mA output current
• LD2987AM30R: 3.0V output voltage, 800mA output current

Note: The above alternative models are similar voltage regulators with varying output currents.

In conclusion, the LD2985AM30R is a voltage regulator that provides a stable output voltage of 3.0V. It offers low dropout, low quiescent current, and high accuracy. With its compact package and wide input voltage range, it is suitable for various applications in battery-powered devices, industrial automation, and automotive electronics. However, it has limitations in terms of output current and requires external capacitors for stability.