●Description
●The MCP73837 and MCP73838 devices are fully integrated linear Li-Ion / Li-Polymer battery chargers with autonomous power source selection. Along with its small physical size, the low number of external components required makes the MCP73837/8 ideally suitable for portable applications.
●Features
●• High Accuracy Preset Voltage Regulation: +0.5%
●• Available Voltage Regulation Options:
●\- 4.20V, 4.35V, 4.4V, or 4.5V
●• Complete Linear Charge Management Controller:
●\- Autonomous Power Source Selection
●\- Integrated Pass Transistors
●\- Integrated Current Sense
●\- Integrated Reverse Discharge Protection
●• Constant Current (CC) / Constant Voltage (CV) Operation with Thermal Regulation
●• Selectable USB-Port Charge Current:
●\- Low: 1 Unit Load / High: 5 Unit Loads
●• Programmable AC-Adapter Charge Current:
●\- 15mA - 1000mA
●• Two Charge Status Outputs
●• Power-Good Monitor: MCP73837
●• Timer Enable: MCP73838
●• Automatic Recharge:
●\- Selectable Voltage Threshold
●• Automatic End-of-Charge Control:
●\- Selectable Charge Termination Current Ratio
●\- Selectable Safety Timer Period
●• Preconditioning of Deeply Depleted Cells - can be disabled
●• Battery Cell Temperature Monitor
●• UVLO (Undervoltage Lockout)
●• Automatic Power-Down when Input Power is Removed
●• Low-Dropout (LDO) Linear Regulator Mode
●• Numerous Selectable Options Available for a Variety of Applications:
●\- Refer to Section 1.0 “Electrical Characteristics”for Selectable Options”
●\- Refer to the “Product Identification System”for Standard Options
●• Temperature Range: -40°C to 85°C
●• Packaging:
●\- 10-Lead 3 mm x 3 mm DFN
●\- 10-Lead MSOP
● Consult Factory for MSOP Package Availability.
●Applications
●• Smart Phones and Personal Data Assistants(PDA)
●• Portable Media Players(PMP)
●• Ultra Mobile Devices(UMD)
●• Digital Cameras
●• MP3 Players
●• Bluetooth Headsets
●• Handheld Medical Devices
●• AC/USB Dual Source Li-Ion Battery Chargers
