BD99954MWV-E2

1. General Description

BD99954MWV-E2 is a Battery Management LSI for 1-4 cell Lithium-Ion secondary battery, and available in a 40pin 0.40 mm pitch 5.0 mm x 5.0 mm QFN package and small 41-ball 0.4mm pitch 2.6mm x 3.0mm Wafer-Level CSP package which is designed to meet high degree demands for space-constraint equipment such as Low profile Notebook PC, Tablets and other applications. BD99954MWV-E2 provides a Dual-source Battery Charger, two port BC1.2 detection and a Battery Monitor with several alarm(INT#, PROCHOT#) outputs

2. Pin Configuration

3. Features

   1. Dual-source Battery Charger

   2. High efficiency Step-Up/Down switching charger for 1-4 cell Li-Ion/Li-poly battery

   3. Two separate input sources for USB-VBUS and DC adapter.

   4. Two port BC1.2 detectors.

   5. JEITA compliant charging profile

   6. Programmable parameters for Preconditioning, Precharge current, and Fast-charge current

   7. Programmable charging voltage

   8. Programmable charge current

   9. Programmable Switching Frequency: 600kHz to 1.2MHz

 10. Support USB BCS 1.2, ACA, ID pin, OTG

 11. USB-VBUS Over Voltage Protection

 12. Over Voltage Battery Protection

 13. Battery Short Circuit Detection

 14. Power Path Management with charge pump gate driver

 15. Flexibility power path control

 16. Reverse Buck/Boost Option for USB/USB-PD

 17. Bias voltage output for the external thermistor

 18. PMON output

 19. PROCHOT# output

 20. Support Inhibit / Autonomous Charging

 21. Battery Learn Function

 22. Input Operating Range: 3.8V to 25V

 23. Voltage Measurement for Thermistor.

 24. Bias voltage output for the external thermistor.

 25. SMBus Interface (Clock up friendly I2C) for Host communication

 26. Embedded OTPROM for initial settings

4. Block Diagram

5. Applications

   1. Ultrabook

   2. Notebook PC

   3. Ultra-mobile PC

   4. Tablet PC