RT9161-18GV

Product Overview

Category: Voltage Regulator
Use: To regulate voltage in electronic circuits
Characteristics: Stable output voltage, low dropout voltage, low quiescent current
Package: SOT-23-3
Essence: Linear regulator
Packaging/Quantity: Tape and Reel / 3000 pieces per reel

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage: 1.8V
• Dropout Voltage: 200mV at 100mA
• Quiescent Current: 50µA
• Line Regulation: ±0.2%
• Load Regulation: ±0.4%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The RT9161-18GV has three pins:

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

Functional Features

• Low dropout voltage ensures stable output even with low input voltage.
• Low quiescent current minimizes power consumption.
• Excellent line and load regulation for accurate voltage regulation.
• Thermal shutdown protection prevents overheating.

Advantages and Disadvantages

Advantages: - Stable output voltage - Low dropout voltage - Low quiescent current - Good line and load regulation - Thermal shutdown protection

Disadvantages: - Limited input voltage range (2.5V to 6.0V) - SOT-23-3 package may require additional space on the PCB

Working Principles

The RT9161-18GV is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage and adjusting the pass transistor accordingly. The dropout voltage is minimized by using a low dropout (LDO) design, allowing the regulator to maintain a stable output even when the input voltage is close to the desired output voltage.

Detailed Application Field Plans

The RT9161-18GV is commonly used in various electronic devices and circuits that require a stable and regulated power supply. Some typical applications include:

1. Battery-powered devices: Portable electronics, handheld instruments, etc.
2. Microcontroller systems: Arduino boards, development kits, etc.
3. Communication equipment: Wireless modules, routers, etc.
4. Automotive electronics: Infotainment systems, navigation devices, etc.
5. Industrial control systems: PLCs, motor drives, etc.

Detailed and Complete Alternative Models

1. LM1117-1.8V: Similar specifications and pin configuration
2. MCP1700-1802E/TO: Low quiescent current, SOT-23 package
3. TS2950CT-1.8: Low dropout voltage, TO-92 package
4. LP2985-18DBVR: Ultra-low quiescent current, SOT-23 package

These alternative models provide similar functionality and can be used as substitutes for the RT9161-18GV in various applications.

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