LT1761IS5-BYP#TRPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, Low Noise, High PSRR
• Package: SOT-23-5
• Essence: Linear Regulator
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 20V
• Output Voltage Range: 1.21V to 20V
• Output Current: 100mA
• Dropout Voltage: 300mV at 100mA
• Quiescent Current: 40µA
• Line Regulation: ±0.02%
• Load Regulation: ±0.1%
• Ripple Rejection: 75dB at 1kHz
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT1761IS5-BYP#TRPBF is a 5-pin device with the following pin configuration:

1. GND (Ground)
2. BYP (Bypass Capacitor)
3. IN (Input Voltage)
4. NC (No Connection)
5. OUT (Output Voltage)

Functional Features

• Low dropout voltage enables operation with small input-output differentials.
• Low noise output suitable for sensitive applications.
• High power supply rejection ratio (PSRR) minimizes the impact of input voltage variations on the output.
• Internal current and thermal limiting protect the device from excessive current or temperature.

Advantages

• Wide input voltage range allows flexibility in various applications.
• Low quiescent current prolongs battery life in portable devices.
• Excellent line and load regulation ensures stable output voltage.
• Small package size makes it suitable for space-constrained designs.

Disadvantages

• Limited output current of 100mA may not be sufficient for high-power applications.
• Dropout voltage of 300mV may restrict usage in low voltage scenarios.

Working Principles

The LT1761IS5-BYP#TRPBF is a linear regulator that maintains a stable output voltage by adjusting the input voltage. It uses a pass transistor to regulate the voltage drop across it, ensuring a constant output voltage regardless of changes in the input voltage or load conditions. The device operates by comparing the output voltage with a reference voltage and adjusting the pass transistor accordingly.

Detailed Application Field Plans

The LT1761IS5-BYP#TRPBF is commonly used in various applications, including:

1. Battery-powered devices: Provides regulated voltage for microcontrollers, sensors, and other low-power components.
2. Portable audio devices: Ensures clean power supply for audio amplifiers and DACs, minimizing noise interference.
3. Automotive electronics: Stabilizes voltage for automotive sensors, control modules, and infotainment systems.
4. Industrial equipment: Used in instrumentation, control systems, and data acquisition devices.
5. Communication systems: Provides stable voltage for RF modules, transceivers, and wireless communication devices.

Detailed and Complete Alternative Models

1. LM1117-ADJ: Adjustable voltage regulator with similar specifications and package.
2. MCP1700-3302E/TO: Fixed output voltage regulator with low quiescent current.
3. MAX603CPA: Precision voltage reference with adjustable output voltage.

These alternative models offer similar functionality and can be considered as substitutes for the LT1761IS5-BYP#TRPBF in specific applications.

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