S-8254ABFFT-TB-G

Product Overview

Category

S-8254ABFFT-TB-G belongs to the category of integrated circuits (ICs) and specifically falls under the battery protection ICs.

Use

This product is primarily used for protecting rechargeable lithium-ion batteries from overcharging, over-discharging, and short-circuiting. It ensures the safe and efficient operation of lithium-ion batteries in various electronic devices.

Characteristics

• Overcharge protection: Prevents the battery from being charged beyond its safe voltage limit.
• Over-discharge protection: Safeguards the battery by preventing it from discharging below a critical voltage level.
• Short-circuit protection: Detects and prevents excessive current flow during a short circuit event.
• Temperature protection: Monitors the battery temperature and triggers protective measures if it exceeds the specified threshold.
• Low power consumption: The IC itself consumes minimal power, ensuring efficient battery usage.
• Compact package: The S-8254ABFFT-TB-G comes in a small form factor, making it suitable for space-constrained applications.
• RoHS compliant: This product adheres to the Restriction of Hazardous Substances directive, ensuring environmental friendliness.

Package and Quantity

The S-8254ABFFT-TB-G is available in a thin small outline package (TSOP) with 16 pins. It is typically sold in reels, with each reel containing 3,000 units.

Specifications

• Input voltage range: 2.5V - 6.0V
• Overcharge detection voltage: 3.9V ± 25mV
• Overcharge release voltage: 3.7V ± 50mV
• Overdischarge detection voltage: 2.3V ± 100mV
• Overdischarge release voltage: 2.9V ± 80mV
• Short-circuit detection delay time: 5ms - 20ms
• Operating temperature range: -40°C to +85°C

Pin Configuration

The S-8254ABFFT-TB-G has the following pin configuration:

1. VDD: 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. ODT: Overdischarge protection output
8. TSD: Thermal shutdown output
9. VSS: Negative terminal of the battery
10. VCC: Positive terminal of the battery
11. BAT: Battery voltage monitoring input
12. TS: Temperature sensing input
13. N/C: Not connected
14. N/C: Not connected
15. N/C: Not connected
16. N/C: Not connected

Functional Features

• Overcharge protection: Monitors the battery voltage during charging and disconnects the charging circuit when the voltage exceeds the safe limit.
• Over-discharge protection: Prevents excessive discharge by disconnecting the load when the battery voltage drops below the specified threshold.
• Short-circuit protection: Detects abnormal current flow and quickly shuts down the circuit to prevent damage to the battery and other components.
• Temperature protection: Monitors the battery temperature and activates protective measures if it exceeds the predefined temperature range.
• Charging control: Regulates the charging process to ensure optimal charging efficiency and battery lifespan.

Advantages and Disadvantages

Advantages

• Reliable battery protection against overcharging, over-discharging, and short-circuiting.
• Compact size allows for easy integration into various electronic devices.
• Low power consumption ensures efficient battery usage.
• RoHS compliant, environmentally friendly product.

Disadvantages

• Limited to lithium-ion battery protection, not suitable for other battery chemistries.
• Requires proper circuit design and integration for optimal performance.

Working Principles

The S-8254ABFFT-TB-G operates by continuously monitoring the battery voltage, current, and temperature. It compares these parameters with predefined thresholds to determine if any protective action is required. When an abnormal condition is detected, such as overcharging or over-discharging, the IC triggers the appropriate protection mechanism. This can involve disconnecting the charging or discharging circuit, activating short-circuit protection, or initiating thermal shutdown.

Application Field Plans

The S-8254ABFFT-TB-G finds applications in various electronic devices that utilize rechargeable lithium-ion batteries. Some potential application fields include:

1. Mobile phones and smartphones
2. Tablets and laptops
3. Portable gaming consoles
4. Digital cameras and camcorders
5. Power banks and portable chargers
6. Electric vehicles and hybrid cars

Alternative Models

For users seeking alternative options, the following battery protection ICs can be considered:

1. S-8254AAFT-TB-G: