Datasheet MAX77659 (Maxim) - 5

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. 61 Fast-Charge States . 61 Headroom Control . 61 Top-Off State . 62 Done State . 62 Prequalification Timer Fault State . 62 Fast-Charge Timer Fault State . 62 Battery Temperature Fault State . 62 JEITA-Modified States . 62 Typical Charge Profile . 63 Charger Applications Information . 63 CHGIN/SYS/BATT Capacitor Selection . 63 Detailed Description—Adjustable Thermistor Temperature Monitors . 64 Thermistor Bias . 65 Configurable Temperature Thresholds . 66 Applications Information . 67 Using Different Thermistor β . 67 NTC Thermistor Selection . 68 Detailed Description—Analog Multiplexer . 68 Measuring Battery Current . 69 Method for Measuring Discharge Current . 69 Method for Measuring Charge Current . 70 Detailed Description—Low-Dropout Linear Regulator (LDO)/Load Switch (LSW) . 70 Features and Benefits . 70 LDO/LSW Simplified Block Diagram . 70 LDO/LSW Active-Discharge Resistor . 71 LDO/LSW Soft-Start . 71 Load Switch Configuration . 71 Applications Information . 72 Input Capacitor Selection . 72 Output Capacitor Selection . 72 Detailed Description—I2C Serial Communication . 73 www.maximintegrated.com Maxim Integrated | 5 Document Outline General Description Applications Benefits and Features Simplified Block Diagram Absolute Maximum Ratings Package Information WLP Electrical Characteristics Electrical Characteristics—Global Resources Electrical Characteristics—Global Resources (continued) Electrical Characteristics—SIMO Buck-Boost Electrical Characteristics—SIMO Buck-Boost (continued) Electrical Characteristics—Smart Power Selector Charger Electrical Characteristics—Smart Power Selector Charger (continued) Electrical Characteristics—Adjustable Thermistor Temperature Monitors Electrical Characteristics—Adjustable Thermistor Temperature Monitors (continued) Electrical Characteristics—Analog Multiplexer Electrical Characteristics—Analog Multiplexer (continued) Electrical Characteristics—Low-Dropout Linear Regulator (LDO)/Load Switch (LSW) Electrical Characteristics—Low-Dropout Linear Regulator (LDO)/Load Switch (LSW) (continued) Electrical Characteristics—I2C Serial Communication Electrical Characteristics—I2C Serial Communication (continued) Typical Operating Characteristics Typical Operating Characteristics (continued) Pin Configuration MAX77659xENV Pin Description Pin Description (continued) Detailed Description Part Number Decoding Support Material Top-Level Interconnect Simplified Diagram Detailed Description—Global Resources Features and Benefits Voltage Monitors AVL POR Comparator AVL Undervoltage-Lockout Comparator SYS Overvoltage-Lockout Comparator Chip Identification nEN Enable Input nEN Manual Reset nEN Dual-Functionality: Push-Button vs. Slide-Switch nEN Internal Pullup Resistors to VCCINT Interrupts (nIRQ) Reset Output (nRST) General-Purpose Input Output (GPIO) Alternate Mode On/Off Controller Top Level On/Off Controller On/Off Controller Transition Table Internal Wake-Up Flags Reset and Off Sequences Power-Up/Down Sequence Flexible Power Sequencer (FPS) Startup Timing Diagram Due to nEN Startup Timing Diagram Due to Charge Source Insertion Force Enabled/Disabled Channels Factory-Ship Mode State Debounced Inputs (nEN, GPI, CHGIN) Watchdog Timer (WDT) Detailed Description—SIMO Buck-Boost SIMO Features and Benefits SIMO Detailed Block Diagram SIMO Control Scheme Drive Strength SIMO Soft-Start SIMO Registers SIMO Active Discharge Resistance SIMO Buck Mode Applications Information SIMO Available Output Current Inductor Selection Input Capacitor Selection Boost Capacitor Selection Output Capacitor Selection Example Component Selection Inductor, Peak Current Limit, and Input Capacitor Output Capacitors Summary SIMO Switching Frequency Unused Outputs PCB Layout Guide Capacitors Input Capacitor at IN_SBB Output Capacitors at SBBx Inductor Ground Connections Detailed Description—Smart Power Selector Charger Switching Charger Implementation with SIMO Architecture Charger Symbol Reference Guide Smart Power Selector Die Temperature Regulation Charger State Machine Charger-Off State Prequalification State Fast-Charge States Headroom Control Top-Off State Done State Prequalification Timer Fault State Fast-Charge Timer Fault State Battery Temperature Fault State JEITA-Modified States Typical Charge Profile Charger Applications Information CHGIN/SYS/BATT Capacitor Selection Detailed Description—Adjustable Thermistor Temperature Monitors Thermistor Bias Configurable Temperature Thresholds Applications Information Using Different Thermistor β NTC Thermistor Selection Detailed Description—Analog Multiplexer Measuring Battery Current Method for Measuring Discharge Current Method for Measuring Charge Current Detailed Description—Low-Dropout Linear Regulator (LDO)/Load Switch (LSW) Features and Benefits LDO/LSW Simplified Block Diagram LDO/LSW Active-Discharge Resistor LDO/LSW Soft-Start Load Switch Configuration Applications Information Input Capacitor Selection Output Capacitor Selection Detailed Description—I2C Serial Communication General Description Features I2C Simplified Block Diagram I2C System Configuration I2C Interface Power I2C Data Transfer I2C Start and Stop Conditions I2C Acknowledge Bit I2C Slave Address I2C Clock Stretching I2C General Call Address I2C Device ID I2C Communication Speed I2C Communication Protocols Writing to a Single Register Writing Multiple Bytes to Sequential Registers Reading from a Single Register Reading from Sequential Registers Engaging HS-Mode for Operation up to 3.4MHz Register Map MAX77659 Register Details INT_GLBL0 (0x00) INT_GLBL1 (0x04) ERCFLAG (0x05) STAT_GLBL (0x06) INTM_GLBL1 (0x08) INTM_GLBL0 (0x09) CNFG_GLBL (0x10) CNFG_GPIO0 (0x11) CNFG_GPIO1 (0x12) CID (0x14) CNFG_WDT (0x17) INT_CHG (0x01) STAT_CHG_A (0x02) STAT_CHG_B (0x03) INT_M_CHG (0x07) CNFG_CHG_A (0x20) CNFG_CHG_B (0x21) CNFG_CHG_C (0x22) CNFG_CHG_D (0x23) CNFG_CHG_E (0x24) CNFG_CHG_F (0x25) CNFG_CHG_G (0x26) CNFG_CHG_H (0x27) CNFG_CHG_I (0x28) CNFG_SBB0_A (0x29) CNFG_SBB0_B (0x2A) CNFG_SBB1_A (0x2B) CNFG_SBB1_B (0x2C) CNFG_SBB2_A (0x2D) CNFG_SBB2_B (0x2E) CNFG_SBB_TOP (0x2F) CNFG_SBB_TOP_B (0x30) CNFG_LDO0_A (0x38) CNFG_LDO0_B (0x39) Typical Application Circuits Typical Applications Circuit Ordering Information Revision History