S-8254AARFT-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 - Overdischarge detection voltage: 2.5V ± 0.08V - Overcurrent detection voltage: 0.1V ± 0.02V - Low current consumption in standby mode: 0.1µA (typ.) - Small package size: 3.0mm x 3.0mm, 0.55mm thickness (TDFN10-P-3030-0.50-01)

Package: TDFN10-P-3030-0.50-01

Essence: The S-8254AARFT-TB-U is a battery protection IC designed to safeguard lithium-ion rechargeable batteries from overcharging, overdischarging, and overcurrent conditions.

Packaging/Quantity: The S-8254AARFT-TB-U is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Operating Voltage Range: 2.5V to 6.0V
• Operating Temperature Range: -40°C to +85°C
• Overcharge Detection Voltage Accuracy: ±25mV
• Overdischarge Detection Voltage Accuracy: ±80mV
• Overcurrent Detection Voltage Accuracy: ±20mV
• Overcharge Release Voltage: 4.05V ± 0.1V
• Overdischarge Release Voltage: 3.0V ± 0.1V
• Overcurrent Release Voltage: 0.15V ± 0.05V

Detailed Pin Configuration

The S-8254AARFT-TB-U has the following pin configuration:

1. VDD: Power supply input
2. GND: Ground
3. CHG: Charge control terminal
4. DSG: Discharge control terminal
5. OVC: Overcharge detection output
6. OVD: Overdischarge detection output
7. OCD: Overcurrent detection output
8. OVR: Overvoltage release control terminal
9. ODR: Overdischarge release control terminal
10. OCR: Overcurrent release control terminal

Functional Features

• Overcharge protection: The IC monitors the battery voltage and disconnects the charging circuit when it exceeds the overcharge detection voltage.
• Overdischarge protection: The IC cuts off the discharge circuit when the battery voltage drops below the overdischarge detection voltage.
• Overcurrent protection: The IC interrupts the discharge circuit if the discharge current exceeds the overcurrent detection voltage.
• Release control: The IC provides control signals to release the protection state after the fault condition is resolved.

Advantages and Disadvantages

Advantages: - Effective protection against overcharging, overdischarging, and overcurrent conditions - Low standby current consumption prolongs battery life - Small package size allows for space-saving designs - Accurate voltage detection ensures reliable protection

Disadvantages: - Limited operating temperature range (-40°C to +85°C) - Requires external components for complete battery protection system

Working Principles

The S-8254AARFT-TB-U operates by continuously monitoring the battery voltage during charging and discharging. It compares the voltage with predefined thresholds to detect overcharge, overdischarge, and overcurrent conditions. When a fault is detected, the IC triggers the corresponding protection mechanism to safeguard the battery. After the fault condition is resolved, the IC releases the protection state to allow normal battery operation.

Detailed Application Field Plans

The S-8254AARFT-TB-U is widely used in various portable electronic devices powered by lithium-ion rechargeable batteries. Some common application fields include: - Smartphones and tablets - Laptops and notebooks - Digital cameras and camcorders - Portable gaming consoles - Wearable devices

Detailed and Complete Alternative Models

1. S-8254AABFT-TB-G: Battery protection IC with similar specifications, but in a different package (TDFN10-P-3030-0.65-01).
2. S-8254AAEFT-TB-G: Battery protection IC with extended operating temperature range (-40°C to +105°C) for more demanding environments.
3. S-8254AACFT-TB-G: Battery protection IC with lower overcharge detection voltage (4.15V ± 0.05V) for specific battery requirements.

These alternative models offer flexibility in choosing the most suitable battery protection IC based on specific design constraints and application needs.

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