Datasheet LT8491 (Analog Devices) - 4

LT8491
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
V TOP VIEW CSP – VCSN, VCSPIN – VCSNIN, VCSPOUT – VCSNOUT ... –0.3V to 0.3V DD SS, CLKOUT, CSP, CSN Voltage ... –0.3V to 3V 64 IOR 63 SCL 62 GND 61 SDA 60 NC 59 GND 58 AV 57 FBOR 56 CLKDET 55 GND 54 VINR 53 IIR VC Voltage (Note 2) ... –0.3V to 2.2V LDO33, VDD, AVDD, Voltage.. –0.3V to 5V FBIR 1 52 NC RT, FBOUT Voltage ... –0.3V to 5V CA 2 51 STATUS IMON_IN, IMON_OUT Voltage ... –0.3V to 5V TEMPSENSE 3 50 IOW VDD 4 49 SWENO SYNC Voltage .. –0.3V to 5.5V FBOW 5 48 ECON INTV FBIW 6 CC, GATEVCC Voltage .. –0.3V to 7V INTVCC 7 46 VIN VBOOST1 – VSW1, VBOOST2 – VSW2 .. –0.3V to 7V SWEN 8 45 CSPIN SWEN, MODE Voltage .. –0.3V to 7V MODE 9 44 CSNIN IMON_IN 10 SRVO_FBIN, SRVO_FBOUT Voltage ... –0.3V to 30V 65 SHDN 11 GND 42 CSPOUT SRVO_I N, SRVO_IOUT Voltage ... –0.3V to 30V CSN 12 41 CSNOUT FBIN, SHDN Voltage ... –0.3V to 30V CSP 13 40 EXTVCC LDO33 14 CSNIN, CSPIN, CSPOUT, FBIN 15 38 SRVO_FBOUT CSNOUT Voltage .. –0.3V to 80V FBOUT 16 37 SRVO_IOUT IMON_OUT 17 36 SRVO_IIN VIN, EXTVCC Voltage .. –0.3V to 80V VC 18 35 SRVO_FBIN SW1, SW2 Voltage ..81V (Note 5) SS 19 CLKOUT 20 33 BOOST1 BOOST1, BOOST2 Voltage ... –0.3V to 87V BG1, BG2, TG1, TG2 ... (Note 4) IOW, ECON, CLKDET Voltage .. –0.3V to V 24 DD + 0.5V RT 22 CC TG2 28 SWENO, STATUS Voltage .. –0.3V to V SYNC 21 BG1 23 BG2 25 SW2 29 SW1 31 TG1 32 DD + 0.5V GATEV BOOST2 27 FBOW, FBIW, Voltage .. –0.3V to VDD + 0.5V UKJ PACKAGE VINR, FBOR, IIR, IOR Voltage ... –0.3V to VDD + 0.5V 64-LEAD (7mm × 11mm) PLASTIC QFN TEMPSENSE Voltage... –0.3V to V TJMAX = 125°C, θJA = 34°C/W DD + 0.5V EXPOSED PAD (PIN 65) IS GND, MUST BE SOLDERED TO PCB SDA, SCL, CA Voltage ... –0.3V to VDD + 0.5V Operating Junction Temperature Range LT8491E (Notes 1, 3) ... –40°C to 125°C LT8491I (Notes 1, 3) .. –40°C to 125°C Storage Temperature Range .. –65°C to 150°C
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT8491EUKJ#PBF LT8491EUKJ#TRPBF LT8491UKJ 64-Lead (7mm × 11mm) Plastic QFN –40°C to 125°C LT8491IUKJ#PBF LT8491IUKJ#TRPBF LT8491UKJ 64-Lead (7mm × 11mm) Plastic QFN –40°C to 125°C Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix. Rev. 0 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Overview I2C Serial Interface I2C: START and STOP Conditions I2C: ACKnowledge I2C: Chip Addressing I2C: Clock Stretching I2C: Data Transfer Transactions I2C: Powering the Interface I2C Data Data: Memory Regions Data: Bytes, Words and Long Words Data: Min/Max Register Values Data: Access Permissions Startup Sequence Battery Charging Algorithm Stage 0: Trickle Charging Stage 1: Full Constant Current Stage 2: Constant Voltage Stage 3: (Optional) Reduced Constant Voltage Done Charging Charging Faults Maximum Power Point Tracking Telemetry Operation Telemetry: Configuration Settings Telemetry: Acquisition CRC Operation EEPROM Operation EEPROM: Startup EEPROM: Reading EEPROM: Writing I2C Register Map I2C Register Descriptions Telemetry Registers TELE_TBAT TELE_POUT TELE_PIN TELE_EFF TELE_IOUT TELE_IIN TELE_VBAT TELE_VIN TELE_VINR Status Registers STAT_CHARGER STAT_SYSTEM STAT_SUPPLY STAT_TSx_REMAIN STAT_CHRG_FAULTS STAT_VERSION STAT_BOOT_CRC STAT_CFG_CRC Control The EEPROM CTRL_WRT_TO_BOOT CTRL_EE_WRT_EN Control Other Functions CTRL_HALT_STARTUP CTRL_CHRG_EN CTRL_RESTART_CHIP CTRL_RESET_FLAG CTRL_UPDATE_TELEM Configure The Telemetry CFG_RSENSE1 CFG_RIMON_OUT CFG_RSENSE2 CFG_RDACO CFG_RFBOUT1 CFG_RFBOUT2 CFG_RDACI CFG_RFBIN2 CFG_RFBIN1 Configure Initial Charger Enable CFG_INIT_CHRG_EN Configure VBAT for Stages 0, 1 and 3 CFG_VS3_25C CFG_UV_S0 CFG_S0_UV CFG_S0_S1 CFG_S1_S0 Configure Temperature Fault Limits CFG_TBAT_MIN CFG_TBAT_MAX Configure Stage Timeout Limits CFG_TMR_S0 CFG_TMR_S1 CFG_TMR_S2 CFG_TMR_S3 Configure Automatic Restart CFG_RSTRT_IN_FLT CFG_RSTRT_IN_DONEA CFG_RSTRT_IN_DONEB CFG_RSTRT_IN_S3 Configure Charge Termination CFG_TERMINATE Configure Misc. CFG_SCAN_RATE_LP CFG_SCAN_RATE CFG_CHRG_MISC Configure Temperature Compensation CFG_TC3, CFG_TC2, CFG_TC1 Configure User Code CFG_USER_CODE Manufacturer Data MFR_DATA1 MFR_DATA2 MFR_DATA3 Applications Information Hardware Configuration HW Config: Input Voltage Sensing and Modulation HW Config: VINR Pin Connections HW Config: Solar Panel Powered Charging HW Config: DC Supply Powered Charging HW Config: VBAT in Stage 2 (VS2) HW Config: Input Current Sense and Limit HW Config: Output Current Sense and Limit HW Config: Current Sense Filtering HW Config: Battery Temperature and Disconnect Sensing HW Config: SHDN Pin Connections HW Config: MODE Pin – Current Conduction Mode HW Config: Driving an LED with the STATUS Pin HW Config: I2C Chip Address Pin In-Situ Battery Charging Hot-Plugging Considerations STATUS Indicator Pin Lithium-Ion Battery Charging Lead-Acid Battery Charging Optional Features Optional: Low Power Mode Optional: Output Feedback Resistor Disconnect Optional: EXTVCC Disconnect Optional: Remote Battery Voltage Sensing Optional: DC Supply Detection Circuit Board Layout Considerations Design Example Typical Applications Package Description Typical Application Related Parts