I2C Controlled 500mA Battery Charger From MPS
With Power Path Management for Single Cell Li-ion Battery
Wearable devices are increasingly integrated into our lives. In addition to being used in the field of fitness, they have also penetrated into other fields, including medical care, entertainment, security, finance, etc. In this application, battery life and component size are two of key concerns.
The 1.55x1.55mm 9 balls CSP package allows MP2661 family by MPS to be an ideal candidate for wearable application.The power-path power structure makes system instant on when battery is weak by using MP2661 family. All the charging parameters can be flexibly programmed via the I2C Bus.
The MP2661 family also has shipping mode to minimize the battery quiescent current to 5.5µA when the device is in storage or during shipping.
MP2661 Can Handle All Battery Protection Needs
MP2661 has robust protections as shown in below bullets. Particularly, the MP2661 can handle all of the battery protection needs during both charging and discharging.
In charging, MP2661 has battery over voltage protection besides the precise battery voltage loop. In discharging, MP2661 has battery under voltage protection and discharge over current protection. MP2661 has another derivative called MP2664 with same features except QFN2x2 package, which provides better thermal and easier PCB SMT manufacture.
Product Features:
- 12V Sustainable Voltage for the Input Source
- Up to 500mA Input Current Limit
- Up to 500mA Charge Current
- Fully Autonomous Charger for Single-Cell Lithium ion Battery
- 0.5% Charging Voltage Accuracy
- I2C Control Interface
- Fully Integrated Power Switches and No External Blocking FET Required
- Integrated Input Current Limit and Input Voltage Limit Power-path Management
- Battery Disconnection Function
- <13µA Battery Quiescent Current in Standby Mode and <5.5µA in Shipping Mode
Robust Protections:
- Battery Hot and Cold Protection
- Programmable Back-up Safety Timer for Charging Cycle
- Optional PCB Over-temperature Protection
- Up to 500mA Charge Current
- Thermal Regulation Loop
- Battery Over Voltage and Under Voltage Protection
- System Short-circuit Protection for both LDO FET and Battery FET
- Battery UVLO
With the above features, the MP2661 is suitable for various wearable applications due to:
- Versatile Configuration to accommodate different system requirements
- Few external components needed to provide overall BOM cost savings
- Optimizes performance in a very compact solution size
Your Contact Person
For more information, please contact Thomas Berner.
