LTC1555CGN#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: The LTC1555CGN#PBF is a versatile integrated circuit primarily used for power management and battery charging applications.

Characteristics: - High efficiency - Low quiescent current - Wide input voltage range - Programmable charge current - Overvoltage protection - Thermal shutdown protection

Package: The LTC1555CGN#PBF is available in a 16-pin SSOP (Shrink Small Outline Package) package.

Essence: This IC is designed to provide efficient and reliable power management solutions, specifically for battery charging applications.

Packaging/Quantity: The LTC1555CGN#PBF is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 2.7V to 6V
• Charge Current Range: 10mA to 500mA
• Operating Temperature Range: -40°C to 85°C
• Quiescent Current: 30µA (typical)
• Overvoltage Protection Threshold: 6.2V (typical)
• Thermal Shutdown Temperature: 150°C (typical)

Pin Configuration

The LTC1555CGN#PBF features the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. VCC: Supply voltage pin
4. PROG: Charge current programming pin
5. STAT: Status output pin
6. CE: Chip enable pin
7. TIMER: Timer capacitor pin
8. TIMER: Timer capacitor pin
9. TIMER: Timer capacitor pin
10. TIMER: Timer capacitor pin
11. TIMER: Timer capacitor pin
12. TIMER: Timer capacitor pin
13. TIMER: Timer capacitor pin
14. TIMER: Timer capacitor pin
15. TIMER: Timer capacitor pin
16. TIMER: Timer capacitor pin

Functional Features

• Programmable charge current allows flexibility in battery charging applications.
• Overvoltage protection prevents damage to the battery and other connected devices.
• Thermal shutdown protection ensures safe operation under high temperature conditions.
• Low quiescent current minimizes power consumption during standby or idle periods.

Advantages and Disadvantages

Advantages: - High efficiency results in faster charging times. - Wide input voltage range allows compatibility with various power sources. - Programmable charge current enables customization for different battery types. - Overvoltage protection safeguards against potential damage. - Thermal shutdown protection enhances safety and reliability.

Disadvantages: - Limited availability of alternative models may restrict sourcing options. - The 16-pin SSOP package may require specialized equipment for soldering and assembly.

Working Principles

The LTC1555CGN#PBF operates by regulating the charging current supplied to a battery. It utilizes programmable charge current control, which allows the user to set the desired charging rate based on the battery's specifications. The IC also incorporates overvoltage protection, which monitors the battery voltage and prevents it from exceeding a certain threshold. In case of excessive heat, the thermal shutdown feature activates, ensuring the IC's temperature remains within safe limits.

Application Field Plans

The LTC1555CGN#PBF finds extensive application in various fields, including: 1. Portable electronic devices (e.g., smartphones, tablets) 2. Wearable devices (e.g., smartwatches, fitness trackers) 3. Medical devices (e.g., portable medical monitors, insulin pumps) 4. Industrial equipment (e.g., handheld instruments, data loggers) 5. Automotive electronics (e.g., GPS devices, dash cameras)

Alternative Models

While the LTC1555CGN#PBF is a highly capable IC, alternative models with similar functionalities include: 1. MAX1555 2. MCP73831 3. BQ24075

These alternative models offer comparable features and can be considered as substitutes based on specific application requirements.

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