EVALUATION KIT AVAILABLE Click here to ask about the production status of specific part numbers. MAX20353 PMIC with Ultra-Low Iq Regulators, Charger, Fuel Gauge, and Haptic Driver for Small Li+ Systems General Description Benefits and Features The MAX20353 is a highly integrated and programmable Extend Battery Use Time Between Battery Charging power management solution designed for ultra-low-power 2 x Micro-I Buck Regulators (<1A I (typ) Each) Q Q wearable applications. It is optimized for size and efficiency 350mA Output Buck1: 0.7V to 2.275V in 25mV Steps to enhance the value of the end product by extending battery life and shrinking the overall solution size. A flexible set Buck2: 0.7V to 3.85V in 50mV Steps Micro-I LV LDO/Load Switch (1A I (typ)) of power-optimized voltage regulators, including multiple Q Q bucks, boost, buck-boost, and linear regulators, provides 1.16V to 2.0V Input Voltage 50mA Output a high level of integration and the ability to create a fully 0.5V to 1.95V Output, 25mV Steps optimized power architecture. The quiescent current of Micro-I LDO/Load Switch (1A I (typ)) each regulator is specifically suited for 1A (typ) to extend Q Q 1.71V to 5.5V Input Voltage battery life in always-on applications. 100mA Output The MAX20353 includes a complete battery management 0.9V to 4V, 100mV Steps solution with battery seal, charger, power path, and fuel Micro-I Buck-Boost Regulator (1.3A I (typ)) Q Q gauge. Both thermal management and input protection 250mW Output are built into the charger. 2.5V to 5V in 100mV Steps The device also includes a factory programmable button Easy-to-Implement Li+ Battery Charging controller with multiple inputs that are customizable to fit Wide Fast Charge Current Range: 5mA to 500mA specific product UX requirements. Smart Power Selector 28V/-5.5V Tolerant Input Three integrated LED current sinks are included for indicator Programmable JEITA Current/Voltage Profiles or backlighting functions, and an ERM/LRA driver with Minimize Solution Footprint Through High Integration automatic resonance tracking is capable of providing Safe Output LDO sophisticated haptic feedback to the user. 15mA When CHGIN Present 2 The device is configurable through an I C interface that 5V or 3.3V allows for programming various functions and reading Haptic Driver device status, including the ability to read temperature ERM/LRA Driver with Quick Start And Stored and supply voltages with the integrated ADC. Pattern RAM This device is available in a 56-bump, 0.5mm pitch Automatic Resonance Tracking (LRA only) 3.71mm x 4.21mm, wafer-level package (WLP) and Closed Loop Automatic Braking (LRA only) operates over the -40C to +85C extended temperature Support Wide Variety of Display Options range. Micro-I Boost Regulator (2.4A I (typ)) Q Q 300mW Output Applications 5V to 20V in 250mV Step Wearable Devices 3 Channel Current Sinks IoT 20V Tolerant Programmable from 0.6 to 30mA Ordering Information appears at end of data sheet. Optimize System Control Power-On/Reset Controller Programmable Push-Button Controller Programmable Supply Sequencing Factory Shelf Mode On-Chip Voltage Monitor Multiplexer and Analog- to-Digital Converter (ADC) 19-100568 Rev 2 2/21MAX20353 PMIC with Ultra-Low Iq Regulators, Charger, Fuel Gauge, and Haptic Driver for Small Li+ Systems TABLE OF CONTENTS General Description ............................................................................ 1 Applications .................................................................................. 1 Benefits and Features .......................................................................... 1 Absolute Maximum Ratings ..................................................................... 12 Package Information .......................................................................... 12 Electrical Characteristics ....................................................................... 13 Typical Operating Characteristics ................................................................ 34 Bump Configuration ........................................................................... 40 Bump Description..............................................................................41 Typical Application Diagram..................................................................... 43 Detailed Description........................................................................... 44 Power Regulation . 44 Dynamic Voltage Scaling (DVS) 44 Power Switch and Reset Control . 44 Power Sequencing 53 Current Sink . 54 System Load Switch . 54 Smart Power Selector 54 Input Limiter . 54 SAR ADC/Monitor MUX 55 JEITA Monitoring with Charger Control 55 Haptic Driver . 55 ERM . 57 LRA . 57 LRA Braking . 57 Driver Amplitude . 57 Automatic Level Compensation 57 Haptic UVLO 57 Vibration Timeout 58 Overcurrent/Thermal Protection . 58 Haptic Driver Lock 58 Interface Modes 58 Pure-PWM (PPWM) . 58 2 2 Real-Time I C (RTI C) . 58 External Triggered Stored Pattern (ETRG) . 58 RAM Stored Haptic Pattern (RAMHP) 59 Fuel Gauge 61 ModelGauge Theory of Operation 61 Maxim Integrated 2 www.maximintegrated.com