S-8254BCIFT-TB-U

Basic Information Overview

Category: Integrated Circuit (IC)

Use: Battery Protection IC for Lithium-ion Rechargeable Batteries

Characteristics: - Overcharge detection voltage: 4.25V ± 0.025V - Overcharge release voltage: 4.05V ± 0.05V - Overdischarge detection voltage: 2.55V ± 0.08V - Overdischarge release voltage: 3.00V ± 0.10V - Overcurrent detection voltage: 0.15V ± 0.02V - Overcurrent release voltage: 0.10V ± 0.02V - Operating temperature range: -40°C to +85°C

Package: Thin Small Outline Package (TSOP-6)

Essence: The S-8254BCIFT-TB-U is a battery protection IC designed specifically for lithium-ion rechargeable batteries. It provides overcharge, overdischarge, and overcurrent protection to ensure the safe and reliable operation of the battery.

Packaging/Quantity: The S-8254BCIFT-TB-U is typically packaged in reels with 3,000 units per reel.

Specifications

• Supply voltage range: 2.5V to 5.5V
• Standby current: 0.1µA (typical)
• Charge current: Up to 2A
• Discharge current: Up to 2A
• Low voltage operation mode: 2.0V (typical)
• Short-circuit protection delay time: 20ms (typical)
• Delay time for overcharge detection: 1s (typical)
• Delay time for overdischarge detection: 1s (typical)

Detailed Pin Configuration

The S-8254BCIFT-TB-U has a total of 6 pins:

1. VCC: Power supply input pin
2. GND: Ground pin
3. CHG: Charge control pin
4. DSG: Discharge control pin
5. OVP: Overvoltage protection output pin
6. OCP: Overcurrent protection output pin

Functional Features

1. Overcharge Protection: The IC monitors the battery voltage during charging and prevents overcharging by disconnecting the charging circuit when the voltage exceeds the specified threshold.
2. Overdischarge Protection: During discharge, the IC continuously monitors the battery voltage and cuts off the discharge circuit when the voltage drops below the specified threshold to prevent overdischarge.
3. Overcurrent Protection: The IC detects excessive current flow and interrupts the circuit to protect the battery from damage caused by high currents.
4. Short-Circuit Protection: In case of a short circuit, the IC quickly shuts down the discharge circuit to prevent further damage.
5. Low Voltage Operation Mode: The IC allows the battery to operate at low voltages, extending its usable capacity.

Advantages and Disadvantages

Advantages: - Provides comprehensive protection for lithium-ion batteries - Wide operating temperature range enables usage in various environments - Low standby current minimizes power consumption - High charge and discharge current capability - Short-circuit protection enhances safety

Disadvantages: - Limited to lithium-ion rechargeable batteries - Requires external components for complete battery protection system

Working Principles

The S-8254BCIFT-TB-U operates based on a combination of voltage monitoring and control circuits. It continuously measures the battery voltage and compares it with predefined thresholds for overcharge, overdischarge, and overcurrent conditions. When any of these conditions are detected, the corresponding protection mechanism is triggered, disconnecting the charging or discharging circuit to prevent damage to the battery.

Detailed Application Field Plans

The S-8254BCIFT-TB-U is widely used in various applications that require lithium-ion rechargeable batteries, such as: - Portable electronic devices (smartphones, tablets, laptops) - Power tools - Electric vehicles - Medical devices - Energy storage systems

Detailed and Complete Alternative Models

1. S-8254AAKFT-TB-G: Battery protection IC with similar specifications but different package (TSOP-8).
2. S-8254ABKFT-TB-G: Battery protection IC with enhanced overcurrent detection capabilities.
3. S-8254ADKFT-TB-G: Battery protection IC with extended operating temperature range (-40°C to +105°C).

These alternative models offer similar functionality and can be considered based on specific application requirements.

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