MCP73861/2/3/4 Advanced Single or Dual Cell, Fully Integrated Li-Ion / Li-Polymer Charge Management Controllers Features Description Linear Charge Management Controllers The MCP7386X family of devices are highly advanced linear charge management controllers for use in space- - Integrated Pass Transistor limited, cost-sensitive applications. The devices com- - Integrated Current Sense bine high-accuracy, constant voltage and current regu- - Reverse-Blocking Protection lation, cell preconditioning, cell temperature monitoring, High-Accuracy Preset Voltage Regulation: + 0.5% advanced safety timers, automatic charge termination, Four Selectable Voltage Regulation Options: internal current sensing, reverse-blocking protection, charge status and fault indication in either a space- - 4.1V, 4.2V MCP73861/3 saving 16-pin, 4 x 4 QFN or 16-pin SOIC package. The - 8.2V, 8.4V MCP73862/4 MCP7386X provides a complete, fully-functional, stand- Programmable Charge Current: 1.2A Maximum alone charge management solution with a minimum Programmable Safety Charge Timers number of external components. Preconditioning of Deeply Depleted Cells The MCP73861/3 is intended for applications utilizing Automatic End-of-Charge Control single-cell Lithium-Ion or Lithium-Polymer battery Optional Continuous Cell Temperature Monitoring packs, while the MCP73862/4 is intended for dual series cell Lithium-Ion or Lithium-Polymer battery Charge Status Output for Direct LED Drive packs. The MCP73861/3 have two selectable voltage- Fault Output for Direct LED Drive regulation options available (4.1V and 4.2V), for use Automatic Power-Down with either coke or graphite anodes and operate with an Thermal Regulation input voltage range of 4.5V to 12V. The MCP73862/4 Temperature Range: -40C to +85C have two selectable voltage-regulation options avail- Packaging: 16-Pin, 4 x 4 QFN able (8.2V and 8.4V), for use with coke or graphite 16-Pin SOIC anodes, and operate with an input voltage range of 8.7V to 12V. Applications The only difference between the MCP73861/2 and Lithium-Ion/Lithium-Polymer Battery Chargers MCP73863/4, respectively, is the function of the charge Personal Data Assistants (PDAs) status output (STAT1) when a charge cycle has been Cellular Telephones completed. The MCP73861/2 flash the output, while Hand-Held Instruments the MCP73863/4 turn the output off. Refer to Cradle Chargers Section5.2.1 Charge Status Outputs Digital Cameras (STAT1,STAT2). MP3 Players The MCP7386X family of devices are fully specified over the ambient temperature range of -40C to +85C. Package Types 16-Pin QFN 16-Pin SOIC STAT2 1 EN 16 V STAT1 2 15 SS2 16 15 14 13 V V 3 14 V 1 12 V SET BAT3 SET BAT3 MCP73861 V 4 V 13 DD1 BAT2 V 2 11 V DD1 BAT2 MCP73862 V V 5 12 DD2 BAT1 MCP73863 V 3 10 V DD2 BAT1 V MCP73864 V SS3 6 11 SS1 V V 9 SS1 4 SS3 PROG 10 TIMER 7 56 7 8 THREF THERM 89 2005 Microchip Technology Inc. DS21893C-page 1 STAT1 PROG THREF STAT2 EN THERM V TIMER SS2 MCP73861 MCP73862 MCP73863 MCP73864MCP73861/2/3/4 Typical Application 1.2A Lithium-Ion Battery Charger 2, 3 12 5V V V DD BAT3 4.7F 4.7 F 1 10, 11 V V SET BAT 14 6 THREF EN 6.19 k 16 7 THERM STAT1 Single + 7.32 k 15 8 Lithium-Ion TIMER STAT2 Cell 0.1 5 4, 9, 13 PROG V F SS MCP73861/3 Functional Block Diagram Direction Control V V DD1 BAT1 V V V BAT2 DD2 DD G = 0.001 4k V REF Charge Current 90 1k k Control Amplifier PROG + Voltage Control Amplifier 11 k Charge V REF 10 k V REF Termination V BAT3 Comparator 110 k + Precondition Charge OK 600 k I /12 Precondition REG Comp. Precon (1.65 M) Control 10 k U VLO COMPARATOR + 148.42 k Values in ( ) Constant-Voltage/ reflect the V Recharge Comp. UVLO MCP73862/4 devices 1.58 k EN Power-On V REF Delay 300.04 k V UVLO Bias and V (1.2V) REF V Reference SET Generator 10.3 k (8.58 k) V SS1 V THREF SS2 V SS3 Temperature 100 k STAT1 Comparators + THERM Drv Stat 1 50 k Charge Control, I /12 REG STAT2 + Charge Timers And Status Logic Drv Stat 2 Oscillator 50 k TIMER Charge OK DS21893C-page 2 2005 Microchip Technology Inc. + + +