描述 Description

The MCP73833/4 is a highly advanced linear charge management controller for use in space-limited, cost sensitive applications. The MCP73833/4 is available in a 10-Lead, 3 mm x 3 mm DFN package or a 10-Lead, MSOP package. Along with its small physical size, the low number of external components required makes the MCP73833/4 ideally suited for portable applications. For applications charging from a USB port, the MCP73833/4 can adhere to all the specifications governing the USB power bus.

特性 Features

? Complete Linear Charge Management Controller

- Integrated Pass Transistor

- Integrated Current Sense

- Integrated Reverse Discharge Protection

? Constant Current / Constant Voltage Operation with Thermal Regulation

? High Accuracy Preset Voltage Regulation:

- 4.2V, 4.35V, 4.4V, or 4.5V, +0.75%

? Programmable Charge Current: 1A Maximum

? Preconditioning of Deeply Depleted Cells

- Selectable Current Ratio

- Selectable Voltage Threshold

? Automatic End-of-Charge Control

- Selectable Current Threshold

- Selectable Safety Time Period

? Automatic Recharge

- Selectable Voltage Threshold

? Two Charge Status Outputs

? Cell Temperature Monitor

? Low-Dropout Linear Regulator Mode

? Automatic Power-Down when Input Power Removed

? Under Voltage Lockout

? 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

? Available Packages:

- DFN-10 (3 mm x 3 mm)

- MSOP-10

Applications

? Lithium-Ion / Lithium-Polymer Battery Chargers

? Personal Data Assistants

? Cellular Telephones

? Digital Cameras

? MP3 Players

? Bluetooth Headsets

? USB Chargers