Data SheetTable of Contents1.0 Electrical Characteristics32.0 Typical Performance Curves7FIGURE 2-1: Battery Regulation Voltage (VBAT) vs. Supply Voltage (VDD).7FIGURE 2-2: Battery Regulation Voltage (VBAT) vs. Ambient Temperature (TA).7FIGURE 2-3: Output Leakage Current (IDISCHARGE) vs. Battery Regulation Voltage (VBAT).7FIGURE 2-4: Charge Current (IOUT) vs. Programming Resistor (RPROG).7FIGURE 2-5: Charge Current (IOUT) vs. Supply Voltage (VDD).7FIGURE 2-6: Charge Current (IOUT) vs. Supply Voltage (VDD).7FIGURE 2-7: Charge Current (IOUT) vs. Junction Temperature (TJ).8FIGURE 2-8: Charge Current (IOUT) vs. Junction Temperature (TJ).8FIGURE 2-9: Thermistor Bias Current (ITHRERM) vs. Supply Voltage (VDD).8FIGURE 2-10: Thermistor Bias Current (ITHRERM) vs. Ambient Temperature (TA).8FIGURE 2-11: Power Supply Ripple Rejection (PSRR).8FIGURE 2-12: Power Supply Ripple Rejection (PSRR).8FIGURE 2-13: Line Transient Response.9FIGURE 2-14: Line Transient Response.9FIGURE 2-15: Load Transient Response.9FIGURE 2-16: Load Transient Response.9FIGURE 2-17: Complete Charge Cycle (180 mA Li-Ion Battery).9FIGURE 2-18: Charge Cycle Start - Preconditioning (180 mAh Li-Ion Battery).93.0 Pin Descriptions11TABLE 3-1: Pin Function Table113.1 Battery Management Input Supply (VDD)113.2 Charge Status Outputs (STAT1, STAT2)113.3 Battery Management 0V Reference (VSS)113.4 Current Regulation Set (PROG)113.5 Power Good Indication (PG) MCP73833 Only113.6 Timer Enable Input (TE) MCP73834 Only113.7 Thermistor Input (THERM)113.8 Battery Charge Control Output (VBAT)113.9 Exposed Thermal Pad (EP)114.0 Functional Description13FIGURE 4-1: Flow Chart.134.1 Under Voltage Lockout (UVLO)144.2 Charge Qualification144.3 Preconditioning144.4 Constant Current - Fast Charge Mode144.5 Constant Voltage Mode144.6 Charge Termination144.7 Automatic Recharge154.8 Thermal Regulation15FIGURE 4-2: Thermal Regulation.154.9 Thermal Shutdown155.0 Detailed Description175.1 Analog Circuitry175.2 Digital Circuitry17TABLE 5-1: Status Outputs176.0 Applications19FIGURE 6-1: Typical Application Circuit.19FIGURE 6-2: Typical Charge Profile with Thermal Regulation (1700 mAh Li-Ion Battery).19FIGURE 6-3: Typical Charge Cycle Start with Thermal Regulation (1700 mAh Li-Ion Battery).196.1 Application Circuit Design196.2 PCB Layout Issues21FIGURE 6-4: Typical Layout (Top).21FIGURE 6-5: Typical Layout (Bottom).217.0 Packaging Information237.1 Package Marking Information23Size: 1.31 MBPages: 32Language: EnglishOpen manual
Data SheetTable of ContentsPreface5Introduction5Document Layout5Conventions Used in this Guide6Recommended Reading7The Microchip Web Site7Customer Support7Document Revision History7Chapter 1. Product Overview91.1 Introduction91.2 What is the Li-Ion Battery Charger System Power Path Management Reference Design?101.3 What the Li-Ion Battery Charger System Power Path Management Reference Design kit Includes10Chapter 2. Installation and Operation112.1 Introduction112.2 Features112.3 Getting Started12Appendix A. Schematic and Layouts15A.1 Introduction15A.2 Board - Schematic16A.3 Board - Top Layer17A.4 Board - Top Metal Layer17A.5 Board - Bottom Layer18Appendix B. Bill Of Materials (BOM)19Worldwide Sales and Service20Size: 602 KBPages: 20Language: EnglishOpen manual
Data SheetTable of ContentsMiniature Single-Cell, Fully Integrated Li-Ion, Li-Polymer Charge Management Controllers11.0 Electrical Characteristics32.0 Typical Performance Curves73.0 Pin Description113.1 Battery Management Input Supply (VDD)113.2 Battery Charge Control Output (VBAT)113.3 Charge Status Output (STAT)113.4 Battery Management 0V Reference (VSS)113.5 Current Regulation Set (PROG)113.6 Exposed Thermal Pad (EP)114.0 Device Overview134.1 Undervoltage Lockout (UVLO)134.2 Battery Detection134.3 Charge Qualification134.4 Preconditioning134.5 Fast Charge Constant-Current Mode144.6 Constant-Voltage Mode144.7 Charge Termination144.8 Automatic Recharge144.9 Thermal Regulation144.10 Thermal Shutdown145.0 Detailed Description155.1 Analog Circuitry155.2 Digital Circuitry156.0 Applications176.1 Application Circuit Design176.2 PCB Layout Issues187.0 Packaging Information197.1 Package Marking Information19Appendix A: Revision History25Worldwide Sales and Service30Size: 929 KBPages: 30Language: EnglishOpen manual
