BQ24273YFFR - English Editing Encyclopedia Entry

Product Overview

Category

BQ24273YFFR belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

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

Characteristics

• Input voltage range: 3.9V to 6.45V
• Output voltage range: 3.9V to 6.2V
• Charging current: Up to 2A
• Programmable charge current limit
• Integrated power path management
• Thermal regulation and protection
• Battery temperature monitoring
• USB On-The-Go (OTG) support

Package

The BQ24273YFFR is available in a small 20-pin, 2.5mm x 2.5mm wafer chip scale package (WCSP).

Essence

The essence of BQ24273YFFR lies in its ability to efficiently and safely charge lithium-ion or lithium-polymer batteries while providing additional features like power path management and thermal protection.

Packaging/Quantity

This product is typically sold in reels containing a quantity of 3000 units per reel.

Specifications

• Input voltage range: 3.9V to 6.45V
• Output voltage range: 3.9V to 6.2V
• Charging current: Up to 2A
• Programmable charge current limit: 50mA to 2000mA
• Pre-charge current: 10% of programmed charge current
• Termination current: 5% of programmed charge current
• Battery regulation voltage accuracy: ±1%
• Operating temperature range: -40°C to +85°C

Detailed Pin Configuration

The BQ24273YFFR has a total of 20 pins. The pin configuration is as follows:

1. VBUS: Input voltage from USB or adapter
2. AC/DPDM: Adapter detection input
3. AC/DPDP: Adapter detection input
4. TS: Battery temperature sense input
5. STAT: Status output
6. PG: Power good output
7. INT: Interrupt output
8. ISET: Charge current programming input
9. ILIM: Input current limit programming input
10. EN2: Enable input for OTG function
11. EN1: Enable input for charger function
12. BAT: Battery terminal
13. SYS: System power output
14. GND: Ground
15. TS/NTC: Battery temperature sense input or NTC thermistor input
16. SRN/SCL: Serial interface clock input
17. SDA: Serial interface data input/output
18. VDD: Supply voltage input
19. TS/NTC: Battery temperature sense input or NTC thermistor input
20. SRP/SCL: Serial interface clock input

Functional Features

• Integrated battery charging and power management solution
• Programmable charge current limit for flexible charging options
• Power path management enables simultaneous charging and discharging
• Thermal regulation and protection to prevent overheating
• Battery temperature monitoring ensures safe charging
• USB On-The-Go (OTG) support for powering external devices

Advantages and Disadvantages

Advantages

• Compact package size allows for space-saving designs
• Wide input and output voltage range for compatibility with various devices
• Programmable charge current limit offers flexibility in charging requirements
• Integrated power path management enables uninterrupted device usage during charging
• Comprehensive thermal regulation and protection features ensure safe operation

Disadvantages

• Limited availability in smaller quantities for hobbyist or individual use
• Requires technical expertise for proper integration into electronic devices

Working Principles

The BQ24273YFFR operates by regulating the charging current and voltage to safely charge lithium-ion or lithium-polymer batteries. It utilizes a power path management system that allows the battery to be charged while simultaneously powering the device. The integrated thermal regulation and protection features prevent overheating, ensuring safe operation. Battery temperature monitoring ensures that the charging process remains within safe limits.

Detailed Application Field Plans

The BQ24273YFFR is widely used in various portable electronic devices such as smartphones, tablets, smartwatches, and wireless earphones. Its compact size, programmable charging options, and power path management make it suitable for applications where space is limited, and uninterrupted device usage during charging is desired.

Detailed and Complete Alternative Models

1. BQ24272YFFR: Similar to BQ24273YFFR but with a lower charging current limit of 1.5A.
2. BQ24274YFFR: Similar to BQ24273YFFR but with additional USB OTG support