MAX20353
PMIC with Ultra-Low IQ Regulators, Charger, Fuel Gauge, and Haptic Driver for Small Li+ Systems
Optimized Power Management with Fuel Gauge for 24/7 Monitoring Systems such as Wearables and IoT
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Key Features
Applications/Uses
| VIN (V) (min) | 2.7 |
| VIN (V) (max) | 28 |
| # Step-Down Outputs | 2 |
| # Step-Up Outputs | 2 |
| # LDO Outputs | 2 |
| Battery Charger Features | Battery Charger Charge Timer Input Current Limit Smart Pwr. Selector Thermal Die Regulation Thermistor Input USB Input |
| VOUT (V) (min) | 0.8 |
| VOUT (V) (max) | 3.95 |
| Package/Pins | WLP/56 |
| Budgetary Price (See Notes) | 5.59 |
Simplified Block Diagram
Technical Docs
| Data Sheet | PMIC with Ultra-Low IQ Regulators, Charger, Fuel Gauge, and Haptic Driver for Small Li+ Systems | Mar 03, 2021 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
| VIN (V) (min) | 2.7 |
| VIN (V) (max) | 28 |
| # Step-Down Outputs | 2 |
| # Step-Up Outputs | 2 |
| # LDO Outputs | 2 |
| Battery Charger Features | Battery Charger Charge Timer Input Current Limit Smart Pwr. Selector Thermal Die Regulation Thermistor Input USB Input |
| VOUT (V) (min) | 0.8 |
| VOUT (V) (max) | 3.95 |
| Package/Pins | WLP/56 |
| Budgetary Price (See Notes) | 5.59 |
Key Features
- Extend Battery Use Time Between Battery Charging
- 2 x Micro-IQ Buck Regulators (<1μA IQ (typ) Each)
- 350mA Output
- Buck1: 0.7V to 2.275V in 25mV Steps
- Buck2: 0.7V to 3.85V 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
- 2 x Micro-IQ Buck Regulators (<1μA IQ (typ) Each)
- 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 Stored Pattern RAM
- Automatic Resonance Tracking (LRA only)
- Closed Loop Automatic Braking (LRA only)
- Safe Output LDO
- 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
- Micro-IQ Boost Regulator (2.4μA IQ (typ))
- 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)
Applications/Uses
- Wearable Devices
- IoT
Description
The MAX20353 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 MAX20353 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.
Technical Docs
| Data Sheet | PMIC with Ultra-Low IQ Regulators, Charger, Fuel Gauge, and Haptic Driver for Small Li+ Systems | Mar 03, 2021 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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