XC6805 Series ETR25007-004 One Cell Li-ion/Li-polymer Linear Charger IC with Battery Temperature Detection GENERAL DESCRIPTION The XC6805 is a Constant-Voltage (CV) and Constant-Current (CC) type charging IC for linear charging of single-cell Li-ion batteries and Li-polymer batteries. The basic charging cycle consists of trickle charge mode followed by main charge mode. This IC supports temperature control based on JEITA, making it possible to safely charge Li-ion batteries and Li-polymer batteries by controlling the CV charge voltage and CC charge current according to the temperature. By connecting a resistor to the charge status output pin, it is possible to check the charge condition via the charge status output (CSO) pin voltage. The IC is housed in the small USP-6EL, USP-6B07 package with high heat dissipation, and a charge circuit can be configured using a minimum of external components. APPLICATIONS FEATURES Small Battery JEITA conforming Thermistor Detect Function Built-in Wearable Device Operating Voltage Range : 4.5V ~ 6.0V Fitness Tracker Supply Current : 100A (VIN=5V, VBAT=3.5V) Hearing Aid CC Charge Current : 5mA ~ 40mA (Can be set by external resistance) Smart Meter CV Charge Voltage : 4.2V, 4.05V (at high temperature) Internally fixed Protection Circuit : Thermistor detection function (Except for the XC6805xN) Safety timer function UVLO (Under Voltage Lock Out) Thermal shutdown (Latch Stop) Dropout voltage monitor function Charging over-voltage monitor function Charging over-current monitor function Recharge function Operating Ambient Temperature : - 40C ~ 85C Package : USP-6EL, USP-6B07 Environmentally Friendly : EU RoHS Compliant, Pb Free TYPICAL APPLICATION CIRCUIT CSO R ISET V IN I SET Li-ion Battery BAT C L C XC6805xN IN Protection 1F 1F NF 4.5 6 V IC V SS 1/25 XC6805 Series BLOCK DIAGRAM V IN - VREF VIN-BAT CV disconnect controller + UVLO + + - VREF CC Standby - VREF I SET Voltage Reference BAT VREF VREF Oscillator Timer + Detect I FIN - VREF RTHIN - Battery Detect THIN + + Detect V TRK / NF VREF - - Detect Temperature at 0. (*1) + Control & - Detect Temperature at 10. + Detect V Delay COV + - VREF - Detect Temperature at 45. + + Detect VRCH - Detect Temperature at 60. - VREF + CSO Thermal Shutdown V SS (*1) On the XC6805xN, a resistor to the GND is built-in to invalidate the temperature monitor function. PRODUCT CLASSIFICATION (*1) XC6805 - DESIGNATOR DESCRIPTION SYMBOL DESCRIPTION A 1kHz ON-OFF Charge Status Output on Abnormal Mode B OFF 2 2 Temperature Monitor 3 3 Temperature Monitor Battery Temperature Monitor Function 4 4 Temperature Monitor N No Temperature Monitor E Enable Trickle Charge Function D Disable CV Charge Voltage 1 4.2V (Fixed) 4R-G USP-6EL (3,000pcs/Reel) (*1) - Packages (Order Unit) 8R-G USP-6B07 (5,000pcs/Reel) (*1) The -G suffix denotes Halogen and Antimony free as well as being fully EU RoHS compliant. 2/25