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MAX20303_MAX20303DEWN MAXIM PMICs for Wearable Charge Management Solution
Wearable Devices
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The MAX20303 is a highly integrated and programmable power management solution designed for ultra-low-power wearable applications. It is optimized for size and efficiency to enhance the value of the end product by extending battery life and shrinking the overall solution size. A flexible set of power-optimized voltage regulators, including multiple bucks, boost, buck-boost, and linear regulators, provides a high level of integration and the ability to create a fully optimized power architecture. The quiescent current of each regulator is specifically suited for 1µA (typ) to extend battery life in always-on applications.
The MAX20303 includes a complete battery management solution with battery seal, charger, power path, and fuel gauge. Both thermal management and input protection are built into the charger.
The device also includes a factory programmable button controller with multiple inputs that are customizable to fit specific product UX requirements. Three integrated LED current sinks are included for indicator or backlighting functions, and an ERM/LRA driver with automatic resonance tracking is capable of providing sophisticated haptic feedback to the user.
The device is configurable through an I2C interface that allows for programming various functions and reading device status, including the ability to read temperature and supply voltages with the integrated ADC.
This device is available in a 56-bump, 0.5mm pitch 3.71mm x 4.21mm, wafer-level package (WLP) and operates over the -40°C to +85°C extended temperature range.
Key Features:
Extend Battery Use Time Between Battery Charging
2 x Micro-IQ Buck Regulators (<1µA IQ (typ) Each)
220mA Output
Buck1: 0.8V to 2.375V in 25mV Steps
Buck2: 0.8V to 3.95V in 50mV Steps
Micro-IQ LV LDO/Load Switch (1µA IQ (typ))
1.16V to 2.0V Input Voltage
50mA Output
0.5V to 1.95V Output, 25mV Steps
Micro-IQ LDO/Load Switch (1µA IQ (typ))
1.71V to 5.5V Input Voltage
100mA Output
0.9V to 4V, 100mV Steps
Micro-IQ Buck-Boost Regulator (1.3µA IQ (typ))
250mW Output
2.5V to 5V in 100mV Steps
Easy-to-Implement Li+ Battery Charging
Wide Fast Charge Current Range: 5mA to 500mA
Smart Power Selector
28V/-5.5V Tolerant Input
Programmable JEITA Current/Voltage Profiles
Minimize Solution Footprint Through High Integration
Safe Output LDO
15mA When CHGIN Present
5V or 3.3V
Haptic Driver
ERM/LRA Driver with Quick Start And Breaking
Automatic Resonance Tracking (LRA only)
Support Wide Variety of Display Options
Micro-IQ Boost Regulator (2.4µA IQ(typ))
300mW Output
5V to 20V in 250mV Step
3 Channel Current Sinks
20V Tolerant
Programmable from 0.6 to 30mA
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)
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