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

MCP73837属于集成电路（IC） > 电池充电器。微芯科技股份有限公司制造生产的MCP73837电池充电器电池充电器 PMIC（电源管理集成电路）是元器件级产品系列，用于在电子设备中实现电池充电控制和充电管理功能。这些器件主要根据电池化学及其设计用于的电池数量来分类，可提供电化学电池和超级电容器安全充电所必需的电流或电压调节和监视功能。