BQ24090DGQR

Product Overview

Category

BQ24090DGQR belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for battery charging applications in various electronic devices.

Characteristics

• Input voltage range: 4.35V to 6.45V
• Output voltage range: 3.5V to 4.44V
• Charging current: up to 1.5A
• Standby current: less than 100µA
• Thermal regulation and protection
• Overvoltage protection
• Short-circuit protection

Package

BQ24090DGQR is available in a small 10-pin VSSOP package.

Essence

The essence of BQ24090DGQR lies in its ability to efficiently charge batteries while providing necessary protection features.

Packaging/Quantity

This product is typically sold in reels, with 2500 units per reel.

Specifications

• Input voltage: 4.35V to 6.45V
• Output voltage: 3.5V to 4.44V
• Charging current: up to 1.5A
• Standby current: less than 100µA
• Operating temperature range: -40°C to 85°C
• Package type: VSSOP-10

Pin Configuration

The pin configuration of BQ24090DGQR is as follows:

```

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| | --| EN | --| STAT | --| PG | --| TS | --| VBUS | --| AC | --| GND | --| BAT | --| SYS | |___________| ```

Functional Features

1. Enable (EN) Pin: This pin controls the enable/disable state of the charger.
2. Status (STAT) Pin: Provides charging status information.
3. Power Good (PG) Pin: Indicates when the output voltage is within regulation limits.
4. Thermal Sense (TS) Pin: Monitors the temperature of the device.
5. VBUS Pin: Connects to the input power source.
6. AC Pin: Connects to an external AC adapter.
7. GND Pin: Ground reference for the IC.
8. BAT Pin: Connects to the battery being charged.
9. SYS Pin: Connects to the system load.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows compatibility with various power sources.
• High charging current capability enables faster charging times.
• Comprehensive protection features ensure safe charging.
• Small package size saves board space.

Disadvantages

• Limited output voltage range may not be suitable for all applications.
• Requires additional external components for complete charging circuitry.

Working Principles

BQ24090DGQR operates as a linear charger with thermal regulation. It utilizes a constant current/constant voltage charging algorithm to efficiently charge batteries. The device monitors the battery voltage, current, and temperature to ensure safe and optimal charging. It also provides various protection mechanisms to prevent overvoltage, short-circuits, and thermal issues.

Detailed Application Field Plans

BQ24090DGQR finds applications in a wide range of portable electronic devices, including: - Smartphones - Tablets - Portable media players - Wearable devices - Bluetooth headsets - GPS devices - Digital cameras

Detailed and Complete Alternative Models

1. BQ24092DGQR: Similar to BQ24090DGQR but with a different pin configuration.
2. BQ24094DGQR: Offers higher charging current capability (up to 2A).
3. BQ24095DGQR: Provides additional USB OTG functionality.

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

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