S-8254AAQFT-TB-U

Product Overview

Category

The S-8254AAQFT-TB-U belongs to the category of integrated circuits (ICs) and is specifically designed for power management applications.

Use

This IC is commonly used in battery protection circuits, particularly for lithium-ion rechargeable batteries. It ensures safe and efficient charging and discharging of the battery.

Characteristics

• High precision voltage detection
• Low current consumption
• Overcharge and over-discharge protection
• Short-circuit protection
• Temperature monitoring
• Small package size
• RoHS compliant

Package

The S-8254AAQFT-TB-U is available in a small surface-mount TSSOP-16 package, which allows for easy integration into various electronic devices.

Essence

The essence of the S-8254AAQFT-TB-U lies in its ability to protect lithium-ion batteries from potential damage caused by overcharging, over-discharging, and short-circuits. It ensures the longevity and safety of the battery.

Packaging/Quantity

The S-8254AAQFT-TB-U is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 2.5V - 6.0V
• Overcharge Detection Voltage: 3.9V ± 25mV
• Overcharge Release Voltage: 3.7V ± 75mV
• Overdischarge Detection Voltage: 2.3V ± 100mV
• Overdischarge Release Voltage: 2.9V ± 100mV
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-8254AAQFT-TB-U has a total of 16 pins, each serving a specific function. The pin configuration is as follows:

1. VCC: Power supply input
2. GND: Ground reference
3. CHG: Charging control input
4. DSG: Discharging control input
5. OVP: Overvoltage protection output
6. OCP: Overcurrent protection output
7. UVP: Undervoltage protection output
8. TS: Temperature sense input
9. BAT: Battery connection terminal
10. N/C: Not connected
11. N/C: Not connected
12. N/C: Not connected
13. N/C: Not connected
14. N/C: Not connected
15. N/C: Not connected
16. N/C: Not connected

Functional Features

• Overcharge protection: Prevents the battery from being charged beyond safe limits.
• Overdischarge protection: Safeguards the battery by preventing excessive discharge.
• Short-circuit protection: Detects and prevents short-circuits, ensuring the safety of the battery and the connected circuitry.
• Temperature monitoring: Monitors the battery temperature to prevent overheating.
• Low current consumption: Minimizes power consumption, enhancing overall battery efficiency.

Advantages and Disadvantages

Advantages

• Provides comprehensive protection for lithium-ion batteries.
• High precision voltage detection ensures accurate protection thresholds.
• Small package size allows for easy integration into various electronic devices.
• RoHS compliant, meeting environmental standards.

Disadvantages

• Limited compatibility with other battery chemistries.
• Requires additional external components for complete battery protection.

Working Principles

The S-8254AAQFT-TB-U operates based on a combination of voltage detection and control logic. It continuously monitors the battery voltage and compares it to predefined thresholds. If any of these thresholds are exceeded, the corresponding protection mechanism is triggered, such as disconnecting the charging source or cutting off the discharge path.

Detailed Application Field Plans

The S-8254AAQFT-TB-U is widely used in various portable electronic devices, including smartphones, tablets, digital cameras, and portable gaming consoles. It ensures the safe and efficient operation of the lithium-ion batteries in these devices, protecting them from potential damage caused by improper charging or discharging.

Detailed and Complete Alternative Models

1. S-8254ABQFT-TB-U: Similar to the S-8254AAQFT-TB-U, but with additional features such as reverse current protection.
2. S-8254ACQFT-TB-U: Designed for higher voltage applications, suitable for batteries with an input voltage range of 4.5V - 10.0V.
3. S-8254ADQFT-TB-U: Specifically designed for ultra-low power applications, with reduced current consumption for enhanced battery life.

These alternative models offer similar functionality to the S-8254AAQFT-TB-U, catering to different requirements and specifications.

In conclusion, the S-8254AAQFT-TB-U is a