BQ24001PWPG4

Product Overview

Category

BQ24001PWPG4 belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This product is primarily used for battery charging applications in various electronic devices, such as smartphones, tablets, portable media players, and other portable electronic devices.

Characteristics

• The BQ24001PWPG4 is a highly efficient single-cell Li-Ion battery charger.
• It supports fast charging with constant current and constant voltage modes.
• The device incorporates a thermal regulation loop that ensures safe operation during charging.
• It offers a wide input voltage range, making it suitable for various power sources.
• The charger is designed to protect the battery from overvoltage, overcurrent, and short circuit conditions.

Package and Quantity

The BQ24001PWPG4 is available in a small-footprint 20-pin HTSSOP package. It is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 4.35V to 6.45V
• Charging Current Range: Up to 1.5A
• Charge Voltage: 4.2V
• Operating Temperature Range: -40°C to +85°C
• Efficiency: Up to 94%

Pin Configuration

The BQ24001PWPG4 features a 20-pin HTSSOP package with the following pin configuration:

1. VBUS: Input voltage from the USB port
2. PGND: Power ground
3. STAT: Status output pin
4. TS: Thermal sense input
5. ISET: Charging current setting pin
6. EN/UVLO: Enable/Undervoltage lockout control pin
7. CE: Charge enable control pin
8. SRN: Sense resistor negative terminal
9. SRP: Sense resistor positive terminal
10. VSS: Negative power supply pin
11. VBAT: Battery voltage output
12. VDD: Positive power supply pin
13. TS/NTC: Thermal sense input or NTC thermistor input
14. BATFET: Battery FET control pin
15. SDA: I2C data input/output pin
16. SCL: I2C clock input pin
17. INT: Interrupt output pin
18. TMR: Timer input pin
19. VBUS_STAT: USB bus voltage status input pin
20. VBUSSTATEN: USB bus voltage status enable pin

Functional Features

The BQ24001PWPG4 offers the following functional features:

1. Fast Charging: The charger supports fast charging by providing a constant current during the initial phase and then switching to a constant voltage mode.
2. Thermal Regulation: The device incorporates a thermal regulation loop that monitors the temperature and adjusts the charging current accordingly, ensuring safe operation.
3. Input Voltage Protection: It protects the battery and the charging circuit from overvoltage conditions by automatically regulating the input voltage.
4. Safety Features: The charger includes various safety features like overcurrent protection, short circuit protection, and overvoltage protection to safeguard the battery and the device being charged.

Advantages and Disadvantages

Advantages

• High charging efficiency ensures faster charging times.
• Wide input voltage range allows compatibility with different power sources.
• Integrated thermal regulation ensures safe charging even under varying temperature conditions.
• Multiple safety features protect the battery and the charging circuit from potential damage.

Disadvantages

• Limited to single-cell Li-Ion battery charging applications.
• Requires additional external components for complete functionality.

Working Principles

The BQ24001PWPG4 operates based on the principle of constant current and constant voltage charging. During the initial phase, it provides a constant current to the battery until a predefined voltage threshold is reached. It then switches to a constant voltage mode, maintaining the battery voltage at the desired level while reducing the charging current. The charger continuously monitors the battery temperature and adjusts the charging current accordingly to prevent overheating.

Application Field Plans

The BQ24001PWPG4 finds applications in various portable electronic devices that require single-cell Li-Ion battery charging. Some potential application fields include:

1. Smartphones
2. Tablets
3. Portable media players
4. Bluetooth headsets
5. Wearable devices
6. GPS navigation systems
7. Portable gaming consoles

Alternative Models

For those seeking alternative models with similar functionality, the following options are available:

1. BQ24002PWPR
2. BQ24003PWPR
3. BQ24004PWPR
4. BQ24005PWPR

These alternatives offer comparable features and can be considered as substitutes for the BQ24001PWPG4.

In conclusion, the BQ24001PWPG4 is a highly