LTC1844ES5-SD#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - Low Dropout Voltage Regulator - Small package size (SOT-23-5) - High accuracy and low quiescent current - Wide input voltage range - Overcurrent and thermal protection

Package: SOT-23-5

Essence: The LTC1844ES5-SD#TRPBF is a low dropout voltage regulator designed for power management applications. It provides a stable output voltage with high accuracy and low quiescent current.

Packaging/Quantity: The LTC1844ES5-SD#TRPBF is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Input Voltage Range: 2.5V to 7V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 200mV at 100mA
• Quiescent Current: 30µA
• Load Regulation: ±0.5%
• Line Regulation: ±0.3%
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LTC1844ES5-SD#TRPBF has the following pin configuration:

1. GND (Ground)
2. VIN (Input Voltage)
3. VOUT (Output Voltage)
4. BYP (Bypass Capacitor)
5. SHDN (Shutdown Control)

Functional Features

• Low dropout voltage allows operation with small input-output differentials.
• High accuracy and low quiescent current make it suitable for battery-powered devices.
• Overcurrent and thermal protection ensure safe operation under abnormal conditions.
• Shutdown control feature allows for power-saving mode when not in use.

Advantages and Disadvantages

Advantages: - Small package size enables space-saving designs. - Wide input voltage range provides flexibility in various applications. - High accuracy ensures precise voltage regulation. - Low quiescent current prolongs battery life.

Disadvantages: - Limited output current capability compared to larger regulators. - Sensitive to input voltage fluctuations.

Working Principles

The LTC1844ES5-SD#TRPBF is a low dropout voltage regulator that uses a PNP pass transistor to regulate the output voltage. It operates by comparing the reference voltage with a feedback voltage derived from the output. The pass transistor adjusts its resistance to maintain a stable output voltage, even when the input voltage varies.

Detailed Application Field Plans

The LTC1844ES5-SD#TRPBF is commonly used in the following applications:

1. Battery-powered devices: Portable electronics, wireless sensors, and wearable devices benefit from the low quiescent current and high accuracy of the LTC1844ES5-SD#TRPBF.
2. Automotive systems: The wide input voltage range and thermal protection make it suitable for automotive applications such as infotainment systems and lighting control.
3. Industrial equipment: The small package size and overcurrent protection feature make it ideal for use in industrial automation, motor control, and power supply modules.

Detailed and Complete Alternative Models

1. LT1763: Low dropout voltage regulator with adjustable output voltage and higher output current capability.
2. LT3080: High current, adjustable linear regulator with low dropout voltage and remote sensing capability.
3. LM1117: Popular low dropout voltage regulator available in various fixed output voltages.

These alternative models offer different features and specifications, allowing designers to choose the most suitable option for their specific requirements.

Word count: 448 words