MCP73833

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:
- 3mm x 3mm DFN-10
- MSOP-10

Application

• Lithium-Ion / Lithium-Polymer Battery Chargers
• Personal Data Assistants
• Cellular Telephones
• Digital Cameras
• MP3 Players
• Bluetooth Headsets
• USB Chargers




Pinout






Specifications

Parameter NameValueMax Voltage Regulation (%)±0.75Linear ModeYes# of Cells1Int/Ext FETIntVcc Range (V)3.75 to 6.0Voltage Regulation Accuracy (%)0.75Temperature MonitorYesCharge Safety TimersYesMax Thermal RegulationYes

Parameter Name	Value
Max Voltage Regulation (%)	±0.75
Linear Mode	Yes
# of Cells	1
Int/Ext FET	Int
Vcc Range (V)	3.75 to 6.0
Voltage Regulation Accuracy (%)	0.75
Temperature Monitor	Yes
Charge Safety Timers	Yes
Max Thermal Regulation	Yes

V_DD........................................................................7.0V
All Inputs and Outputs w.r.t. V_SS ...-0.3 to (V_DD+0.3)V
Maximum Junction Temperature, T_J . Internally Limited
Storage temperature ..................... -65°C to +150°C
ESD protection on all pins:
Human Body Model (HBM)
(1.5 k in Series with 100 pF).......................... 4 kV
Machine Model (MM)
(200 pF, No Series Resistance) ...........................300V
*Notice: Stresses above those listed under "Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

Description

1A output current linear charge management controller. Includes integrated pass transistor, integrated current sensing, and reverse discharge protection. Also includes safety features such as cell temperature monitoring, on-chip thermal regulation and safety timers. Available in 10-pin 3mm x 3mm DFN package and 10-pin MSOP package

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, 3mm x 3mm 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, theMCP73833/4 can adhere to all the specifications governing the USB power bus.

The MCP73833/4 employs a constant current/constant voltage charge algorithm with selectable preconditioning 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.