C BATT CSYS EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX77734 Ultra-Low Power Tiny PMIC with Power Path Charger for Small Li+ and 150mA LDO General Description Benefits and Features The MAX77734 is a tiny PMIC for applications where size Extends Battery Life and simplicity are critical. The IC integrates a linear-mode 200nA Factory-Ship Mode for Long Shelf Life Li+ battery charger, low-dropout linear regulator (LDO), 500nA Shutdown Current analog multiplexer, and dual-channel current sink driver. 4.5A Quiescent Current with LDO Enabled Charger Allows Battery to Relax after Charging The charger is designed for small-battery systems that require accurate termination as low as 0.375mA. Linear Charger Optimized for Small Battery Size The circuit can instantly regulate the system voltage 7.5mA to 300mA Fast-Charge Current when an input source is connected even if the battery is Battery Regulation Voltage from 3.6V to 4.6V depleted. Accurate Termination Current as low as 0.375mA Instant-On Functionality provided by Maxim s The 150mA LDO s output is programmable between 0.8V Smart Power Selector 2 and 3.975V with I C. The analog MUX enables an exter- JEITA Battery Temperature Monitors for Safe nal ADC to perform conversions on battery V&I signals Charging for power monitoring. The current sinks are capable of sinking 12.8mA each and can be programmed for LEDs Highly Integrated to blink in custom patterns. 150mA LDO with Power-OK Output The MAX77734 is available in a 20-bump, 0.4mm pitch Dual-Channel Current Sink for LEDs wafer-level package (WLP). For a similar product with Analog Multiplexer for Power Monitoring additional regulators, see the MAX77650. Watchdog Timer On-Key Input for LDO Enable and Manual Reset Applications Small Size Hearables: Headsets, Headphones, Earbuds 2.23mm x 1.97mm (0.5mm max height) WLP Fitness Bands and other Bluetooth Wearables 20-Bump, 0.4mm Pitch, 4 x 5 Array Action Cameras, Wearable/Body Cameras Low-Power Internet of Things (IoT) Gadgets Ordering Information appears at end of data sheet. Simplified Application Circuit 5V DC INPUT CHGIN 4.5V 2 12.25mm SOLUTION SIZE SYS SYSTEM VL 4.7F 1F MAX77734 22F 3.43mm INLDO GND nENLDO LDO 1.8V/3.3V CCHGIN CVL OUTPUT 2.2F ON-KEY V IO BATT POKLDO POWER-OK 4.7F Li+ THM SDA TBIAS SCL SERIAL HOST NTC C LDO SYS nIRQ SNK1 PMLDO LDO MODE CONTROL 0.2mm COMPONENT PITCH SNK2 PULLUP RESISTORS NOT DRAWN AMUX TO SYSTEM ADC BLANK SPACE NOT EXCLUDED POWER PATH LINEAR CHARGER WITH 0.375mA TERMINATION AND DUAL-CHANNEL CURRENT SINKS Smart Power Selector is a trademark of Maxim Integrated Products, Inc. 19-100062 Rev 5 7/20 3.57mmMAX77734 Ultra-Low Power Tiny PMIC with Power Path Charger for Small Li+ and 150mA LDO TABLE OF CONTENTS General Description ............................................................................ 1 Applications .................................................................................. 1 Benefits and Features .......................................................................... 1 Simplified Application Circuit ..................................................................... 1 Absolute Maximum Ratings ...................................................................... 6 Package Information ........................................................................... 6 Electrical Characteristics ........................................................................ 7 Electrical CharacteristicsSmart Power Selector Charger ............................................. 9 Electrical CharacteristicsAdjustable Thermistor Temperature Monitors ................................. 13 Electrical CharacteristicsLinear Regulator........................................................ 15 Electrical CharacteristicsDual-Channel Current Sink Driver .......................................... 17 2 Electrical CharacteristicsI C Serial Interface...................................................... 18 Typical Operating Characteristics ................................................................ 20 Bump Configuration ........................................................................... 22 Bump Description............................................................................. 22 Simplified Block Diagram....................................................................... 24 Detailed Description........................................................................... 25 On/Off Controller 25 Factory-Ship Mode State . 29 Shutdown (Bias Off) State 29 Standby (Bias On) State . 29 Resource On State . 29 Hardware Enable (nENLDO) . 29 Manual Reset 30 Push-Button vs. Slide-Switch Functionality . 30 nENLDO Pullup Resistors to V (V Internal) 30 CCINT CC Interrupts (nIRQ) 31 Watchdog Timer 31 Thermal Alarms and Protection 32 Register Reset Conditions 32 Factory Options . 32 Detailed DescriptionSmart Power Selector Charger 33 Charger Symbol Reference Guide 33 Smart Power Selector 33 Input Current Limiter . 35 Minimum Input Voltage Regulation 35 Maxim Integrated 2 www.maximintegrated.com