BQ24092DGQR

Product Overview

Category

BQ24092DGQR belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This product is primarily used for charging single-cell lithium-ion or lithium-polymer batteries in portable electronic devices such as smartphones, tablets, and wearable devices.

Characteristics

• Input voltage range: 4.35V to 6.45V
• Output voltage range: 3.5V to 4.44V
• Charging current up to 1.5A
• Integrated power FETs for efficient charging
• Thermal regulation and protection features
• Small form factor package for space-constrained designs

Package

BQ24092DGQR is available in a small 10-pin VSSOP (Very Small Outline Package) with exposed thermal pad for enhanced heat dissipation.

Essence

The essence of BQ24092DGQR lies in its ability to provide a compact and efficient solution for charging lithium-ion or lithium-polymer batteries in portable electronic devices.

Packaging/Quantity

This product is typically supplied in tape and reel packaging, with 2500 units per reel.

Specifications

• Input Voltage Range: 4.35V to 6.45V
• Output Voltage Range: 3.5V to 4.44V
• Charging Current: Up to 1.5A
• Operating Temperature Range: -40°C to +85°C
• Battery Regulation Accuracy: ±0.5%
• Charge Termination Accuracy: ±5%
• Standby Quiescent Current: <100µA

Detailed Pin Configuration

1. EN (Enable): Enable pin for controlling the charging process.
2. STAT (Status): Provides charging status information.
3. PG (Power Good): Indicates the presence of input power.
4. TS (Thermal Sense): Connects to an external thermistor for thermal regulation.
5. VSS (Ground): Ground reference for the IC.
6. BAT (Battery): Connection point for the battery being charged.
7. SRN (Sense Resistor Negative): Negative terminal of the sense resistor used for current sensing.
8. SRP (Sense Resistor Positive): Positive terminal of the sense resistor used for current sensing.
9. VBUS (Input Voltage): Connection point for the input power source.
10. SYS (System Output): Provides regulated output voltage for the system.

Functional Features

• Integrated power FETs for efficient charging.
• Thermal regulation to prevent overheating.
• Charge status indication through the STAT pin.
• Power Good (PG) pin for input power detection.
• Enable pin for controlling the charging process.
• Under-voltage lockout and overvoltage protection.

Advantages and Disadvantages

Advantages

• Compact form factor suitable for space-constrained designs.
• Efficient charging with integrated power FETs.
• Thermal regulation prevents overheating.
• Accurate battery regulation and charge termination.
• Wide input and output voltage ranges.

Disadvantages

• Limited charging current compared to some high-power applications.
• Requires an external thermistor for thermal regulation.

Working Principles

BQ24092DGQR utilizes a switching charger architecture to efficiently charge lithium-ion or lithium-polymer batteries. It regulates the charging process by monitoring the battery voltage, current, and temperature. The integrated power FETs ensure efficient power transfer from the input source to the battery. The device also incorporates thermal regulation to prevent excessive heating during charging.

Detailed Application Field Plans

BQ24092DGQR finds extensive application in various portable electronic devices, including: - Smartphones - Tablets - Wearable devices - Portable media players - Bluetooth headsets

Detailed and Complete Alternative Models

• BQ24092DRCR
• BQ24092DGQT
• BQ24092DGNR
• BQ24092DQCR
• BQ24092DQCT

These alternative models offer similar functionality and specifications, providing flexibility in design choices.

In conclusion, BQ24092DGQR is a compact and efficient integrated circuit designed for charging lithium-ion or lithium-polymer batteries in portable electronic devices. With its integrated power FETs, thermal regulation, and accurate battery regulation, it offers reliable charging performance. While it has limitations in terms of charging current and the need for an external thermistor, it remains a popular choice for various applications in the portable electronics industry.