LP3905SD-A3/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power management
• Characteristics: High efficiency, low power consumption
• Package: Small outline package (SOP)
• Essence: Regulator and charger IC for portable devices
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.8V to 4.8V
• Maximum Output Current: 1.5A
• Quiescent Current: 40µA
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LP3905SD-A3/NOPB has the following pin configuration:

1. EN (Enable)
2. VIN (Input voltage)
3. VBAT (Battery voltage)
4. GND (Ground)
5. VOUT (Output voltage)
6. PG (Power good)
7. ISET (Current limit setting)
8. TS (Thermal shutdown)

Functional Features

• Integrated regulator and charger functions
• Low quiescent current for improved battery life
• Wide input voltage range for compatibility with various power sources
• Adjustable output voltage for flexibility in different applications
• Power good indicator for system status monitoring
• Thermal shutdown protection for safe operation

Advantages and Disadvantages

Advantages

• High efficiency helps conserve battery power
• Small package size saves board space
• Wide input voltage range allows for versatile use
• Integrated functions reduce component count and simplify design
• Power good indicator enhances system reliability

Disadvantages

• Maximum output current may not be sufficient for high-power applications
• Limited output voltage range may not meet all application requirements

Working Principles

The LP3905SD-A3/NOPB is designed to regulate and charge batteries in portable devices. It operates by converting the input voltage from a power source, such as a battery or USB port, into a regulated output voltage suitable for powering the device and charging the battery simultaneously. The IC incorporates various protection features, such as thermal shutdown and current limit, to ensure safe operation.

Detailed Application Field Plans

The LP3905SD-A3/NOPB is commonly used in the following applications:

1. Smartphones and tablets
2. Portable media players
3. Wearable devices
4. Bluetooth headsets
5. Portable gaming consoles

Detailed and Complete Alternative Models

• LP3906SD-A3/NOPB
• LP3907SD-A3/NOPB
• LP3908SD-A3/NOPB
• LP3909SD-A3/NOPB
• LP3910SD-A3/NOPB

These alternative models offer similar functionality and can be considered as replacements for the LP3905SD-A3/NOPB.

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