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전자부품 데이터시트 검색엔진 |
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MCP73833-AMI/MF 데이터시트(PDF) 1 Page - Microchip Technology |
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MCP73833-AMI/MF 데이터시트(HTML) 1 Page - Microchip Technology |
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1 / 32 page  © 2009 Microchip Technology Inc. DS22005B-page 1 MCP73833/4 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 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. The MCP73833/4 employs a constant current/constant voltage charge algorithm with selectable precondition- ing and charge termination. The constant voltage regulation is fixed with four available options: 4.20V, 4.35V, 4.40V, or 4.50V, to accomodate new, emerging battery charging requirements. The constant current value is set with one external resistor. The MCP73833/ 4 limits the charge current based on die temperature during high power or high ambient conditions. This thermal regulation optimizes the charge cycle time while maintaining device reliability. Several options are available for the preconditioning threshold, preconditioning current value, charge termination value, and automatic recharge threshold. The preconditioning value and charge termination value are set as a ratio, or percentage, of the programmed constant current value. Preconditioning can be set to 100%. Refer to Section 1.0 “Electrical Characteristics” for available options and the “Product Indentification System” for standard options. The MCP73833/4 is fully specified over the ambient temperature range of -40°C to +85°C. Package Types DFN-10 MSOP-10 VDD STAT1 STAT2 VSS VBAT THERM PG(TE) PROG 2 3 4 5 9 8 7 6 VDD VBAT 110 STAT1 VDD STAT2 VBAT THERM 1 2 3 4 10 9 8 7 PG(TE) VBAT VDD EP 11 5 6 PROG VSS Stand-Alone Linear Li-Ion / Li-Polymer Charge Management Controller |
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