Description
The MCP73833/4 is a highly advanced linear chargemanagement controller for use in space-limited, costsensitive applications. The MCP73833/4 is available ina 10-Lead, 3 mm x 3 mm DFN package or a 10-Lead,MSOP package. Along with its small physical size, thelow number of external components required makesthe MCP73833/4 ideally suited for portableapplications. For applications charging from a USBport, the MCP73833/4 can adhere to all thespecifications governing the USB power bus.The MCP73833/4 employs a constant current/constantvoltage charge algorithm with selectable preconditioning and charge termination. The constant voltageregulation is fixed with four available options: 4.20V,4.35V, 4.40V, or 4.50V, to accomodate new, emergingbattery charging requirements. The constant currentvalue is set with one external resistor. The MCP73833/4 limits the charge current based on die temperatureduring high power or high ambient conditions. Thisthermal regulation optimizes the charge cycle timewhile maintaining device reliability.Several options are available for the preconditioningthreshold, preconditioning current value, chargetermination value, and automatic recharge threshold.The preconditioning value and charge terminationvalue are set as a ratio, or percentage, of theprogrammed constant current value. Preconditioningcan be set to 100%. Refer to Section 1.0 “ElectricalCharacteristics” for available options and the“Product Indentification System” for standardoptions.The MCP73833/4 is fully specified over the ambienttemperature range of -40°C to +85°C.
Features
• Complete Linear Charge Management Controller- Integrated Pass Transistor- Integrated Current Sense- Integrated Reverse Discharge Protection
• Constant Current / Constant Voltage Operationwith 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 PowerRemoved
• Under Voltage Lockout
• Numerous Selectable Options Available for aVariety of Applications:
- Refer to Section 1.0 “ElectricalCharacteristics” for Selectable Options
- Refer to the Product Identification System forStandard Options
• Available Packages:
- DFN-10 (3 mm x 3 mm)
- MSOP-10Applications
• Lithium
-Ion / Lithium
-Polymer Battery Chargers
• Personal Data Assistants
• Cellular Telephones
• Digital Cameras
• MP3 Players
• Bluetooth Headsets
• USB Chargers
The product is in the warehouse and can be shipped immediately
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