BQ25871YFFT

What is BQ25871YFFT?

BQ25871YFFT is an integrated circuit (IC) device manufactured by Texas Instruments. This device is a secondary-side, synchronous, buck-boost, fully integrated Li-ion battery charger. It is designed to charge a Li-ion battery from either a USB port or an adapter. The BQ25871YFFT features high efficiency, low quiescent current, and integrated MOSFETs, allowing for a compact solution. It is capable of charging a battery up to 4A with its wide input voltage range of 4.5V to 28V. The integrated safety features include over-voltage protection (OVP), over-temperature protection (OTP), and reverse current protection (RCP). The BQ25871YFFT is ideal for applications such as wearable devices, smart meters, and energy harvesting applications.

How to use BQ25871YFFT?

Using the BQ25871YFFT is easy and straightforward. First, the user must connect the input voltage source, either a USB port or an adapter, to the VIN pin on the IC. The user must then connect the battery to the BAT pin on the IC. The user must then connect the CP/PG pins to the system microcontroller. Finally, the user must program the IC with the appropriate settings and enable the IC. Once the IC is enabled, it will start charging the battery. The IC features a STAT pin that can be used to monitor the charging status of the battery.

Features and Specifications

The main features of the BQ25871YFFT include:

• Wide input voltage range (4.5V-28V)
• Up to 4A charging current
• Low quiescent current
• Integrated MOSFETs
• Over-voltage protection (OVP)
• Over-temperature protection (OTP)
• Reverse current protection (RCP)
• Charge status monitoring

The specifications of the BQ25871YFFT include:

• Operating temperature range: -40°C to +85°C
• Maximum junction temperature: +150°C
• Output voltage: 4.2V ±1%
• Input voltage range: 4.5V-28V
• Maximum charging current: 4A
• Quiescent current: ≤2.2mA
• Package: WSON-10 (3mm x 3mm)
• ESD protection: ±8kV HBM

Customer Reviews and Scores

The BQ25871YFFT has received generally positive reviews from customers, who have praised its wide input voltage range, high efficiency, and safety features. The BQ25871YFFT has earned a rating of 4.7/5 stars on Digi-Key, 4.6/5 stars on Amazon, and 4.8/5 stars on Mouser.

Pros and Cons

Pros

• Wide input voltage range
• High efficiency
• Low quiescent current
• Integrated safety features

Cons

• Expensive
• Limited number of reviews

FAQ

Q: What is the maximum charging current of the BQ25871YFFT?

A: The BQ25871YFFT has a maximum charging current of 4A.

Q: What is the quiescent current of the BQ25871YFFT?

A: The quiescent current of the BQ25871YFFT is ≤2.2mA.

Q: Does the BQ25871YFFT feature over-voltage protection (OVP)?

A: Yes, the BQ25871YFFT features over-voltage protection (OVP).

Q: What is the package of the BQ25871YFFT?

A: The package of the BQ25871YFFT is WSON-10 (3mm x 3mm).

Conclusion

The BQ25871YFFT is an integrated circuit (IC) device manufactured by Texas Instruments. It is designed to charge a Li-ion battery from either a USB port or an adapter. The BQ25871YFFT features high efficiency, low quiescent current, and integrated MOSFETs, allowing for a compact solution. It is capable of charging a battery up to 4A with its wide input voltage range of 4.5V to 28V. The integrated safety features include over-voltage protection (OVP), over-temperature protection (OTP), and reverse current protection (RCP). The BQ25871YFFT has generally received positive reviews and has earned a rating of 4.7/5 stars on Digi-Key, 4.6/5 stars on Amazon, and 4.8/5 stars on Mouser.