S-8261AALMD-G2LT2G

Basic Information Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - Low voltage detection - Battery backup switching - Power supply monitoring - Voltage regulator

Package: SOT-23-5

Essence: The S-8261AALMD-G2LT2G is a power management IC designed for low voltage detection and battery backup switching in various electronic devices.

Packaging/Quantity: The S-8261AALMD-G2LT2G is available in a standard SOT-23-5 package. It is typically sold in reels of 3,000 units.

Specifications

• Input Voltage Range: 1.6V to 6.0V
• Detection Voltage Accuracy: ±1.0%
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 0.7µA (typical)
• Output Current: 50mA (maximum)
• Battery Backup Switching Threshold: 2.4V (typical)
• Delay Time: 200ms (typical)

Detailed Pin Configuration

The S-8261AALMD-G2LT2G has the following pin configuration:

1. VDD: Power supply input
2. GND: Ground reference
3. CE: Chip enable input
4. OUT: Output voltage
5. BAT: Battery backup input

Functional Features

1. Low Voltage Detection: The S-8261AALMD-G2LT2G can accurately detect low voltages within the specified range.
2. Battery Backup Switching: It provides seamless switching between the main power supply and a backup battery when the main power supply fails.
3. Power Supply Monitoring: The IC continuously monitors the input voltage and provides an output signal indicating the power supply status.
4. Voltage Regulator: It includes a built-in voltage regulator to ensure stable output voltage.

Advantages and Disadvantages

Advantages: - Accurate low voltage detection - Seamless battery backup switching - Compact SOT-23-5 package - Low quiescent current consumption

Disadvantages: - Limited maximum output current (50mA) - Narrow operating temperature range (-40°C to +85°C)

Working Principles

The S-8261AALMD-G2LT2G operates by continuously monitoring the input voltage using an internal voltage reference. When the input voltage drops below the specified threshold, it triggers a low voltage detection signal. This signal can be used to activate various functions such as battery backup switching or power supply monitoring.

The IC also incorporates a voltage regulator that ensures a stable output voltage even when the input voltage fluctuates. This feature is particularly useful in applications where a consistent power supply is critical for proper device operation.

Detailed Application Field Plans

The S-8261AALMD-G2LT2G finds application in various electronic devices that require low voltage detection, battery backup switching, and power supply monitoring. Some potential application fields include:

1. Portable Electronics: Smartphones, tablets, and portable media players often rely on battery backup systems to ensure uninterrupted operation during power outages or when the main power supply is disconnected.
2. Industrial Control Systems: The IC can be used in industrial control systems to monitor power supply status and trigger appropriate actions in case of power failures.
3. Automotive Electronics: In automotive applications, the S-8261AALMD-G2LT2G can be utilized to detect low battery voltage and switch to a backup power source to prevent system shutdowns.

Detailed and Complete Alternative Models

1. S-8261AALMD-G3JT2G: Similar to the S-8261AALMD-G2LT2G, but with a different detection voltage threshold.
2. S-8261AALMD-G4KT2G: A higher current variant of the S-8261AALMD-G2LT2G, capable of delivering up to 100mA output current.

These alternative models offer similar functionality and can be considered as suitable replacements for the S-8261AALMD-G2LT2G in specific applications.

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