Datasheet MAX77659 (Maxim)

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MAX77659 SIMO PMIC with 300mA Switching Charger General Description Benefits and Features
The MAX77659 provides highly-efficient integrated battery ● Highly Integrated charging and power supply solutions for low-power ap- • 3x Output, Single-Inductor Multiple-Output (SIMO) plications where size and efficiency are critical. The IC Buck-Boost Regulator features a dual-input SIMO buck-boost regulator that pro- • Supports Wide Output Voltage Range from 0.5V vides one charging rail and three independently program- to 5.5V for all SIMO Channels mable power rails from a single inductor to minimize total • 1x 100mA LDO/LSW solution size. A 100mA LDO provides ripple rejection for • Smart Power Selector™ Li+/Li-Poly Switching audio and other noise-sensitive applications. The LDO Charger can also be configured as a load switch to manage power • 2x GPIO Resources consumption by disconnecting external blocks when not • Analog MUX Output for Power Monitoring required. A highly-configurable switching charger supports • Factory-Ship Mode (< 200nA IQ) a wide range of Li+ battery capacities and includes battery • Watchdog Timer temperature monitoring for additional safety (JEITA). ● Low Power This device includes two GPIOs and an analog multiplexer • 0.3μA Shutdown Current that switches several internal voltages and current signals • 5μA Operating Current (3 SIMO Channels + 1 LDO) to an external node for monitoring with an external ADC. A ● Charger Optimized for Small Battery Size bidirectional I2C serial interface allows for configuring and • Input Operating Voltage from 3.4V to 5.5V checking the status of the devices. An internal on/off con- • Programmable Fast-Charge Current from 7.5mA to troller provides a controlled startup sequence for the regu- 300mA lators and provides supervisory functionality while they are • Programmable Battery Regulation Voltage from on. Numerous factory programmable options allow the de- 3.6V to 4.6V vice to be tailored for many applications, enabling faster • Programmable Termination Current from 0.375mA time to market. to 45mA • Thermal Regulation and JEITA Compliance
Applications
● Flexible and Configurable ● TWS Earbuds • I2C-Compatible Interface and GPIO ● Bluetooth Headphones, Hearables • Factory OTP Options Available ● Smart Wearables, Fitness Bands, and Medical Wearables ● Small Size ● Hearing Aids • 6.04mm2 Wafer-Level Package (WLP) • 30-Bump, 0.4mm Pitch, 6x5 Array
Ordering Information appears at end of data sheet.
Smart Power Selector is a trademark of Maxim Integrated Products, Inc. 19-101209; Rev 0; 8/21 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