NXP Semiconductors PCA9422

PCA9422 is a highly-integrated power management IC (PMIC), targeted to provide a full power management solution for low-power microcontroller applications or applications with small batteries. The PCA9422 consists of a JEITA (Japan Electronics and Information Technology Industries Association) compliant linear battery charger capable of charging up to 640 mA current.

PCA9422 has I²C programmable values for flexible configuration. Various built-in protection features such as input overvoltage protection, overcurrent protection and thermal protection are also provided for safe operation.

PCA9422 also introduces FLEXGAUGE™ which allows for zero incremental cost battery gauging when combined with i.MX RT MCU family.

• Maximize processor efficiency and extend battery life through intelligent DVS and mode selection.
• Enable seamless MODE CONTROL and RESET via hardware pins for faster, more reliable system management.
• 10 year-Longevity program
• Battery charger with programmable constant voltage regulation, automatic recharge voltage and termination current threshold.

Key features

• FLEXGAUGE™ Software Solution
  • Host software-based battery fuel gauging with zero BOM Increase battery fuel gauging
  • Lightweight Code Footprint
  • Fully Verified & Scalable
  • Accelerate time-to-market with a proven solution that scales effortlessly across i.MX RT500/600/700 and MCX-L families.
• Linear Battery Charger for Charging Single Cell Li-Ion Battery
  • Programmable constant current, constant voltage regulation, automatic recharge voltage and termination current threshold
  • Built-in protection features such as input over voltage protection (OVP), battery over current protection (OCP), thermal protection
  • JEITA compliant
  • Battery attached detection
  • 26 V tolerance on VIN pin
• Programmable constant current (up to 640 mA) and pre-charge low voltage current threshold
• Comprehensive Rail Coverage
  • Power all critical rails with one PMIC, simplifying your design and reducing component count.
• Three step-down DC/DC converters
  • Very low quiescent current
  • Programmable output voltage:
  • SW1: core buck converter, 0.4 V~1.975 V output, 6.25 mV/step, up to 500 mA
  • SW2: system buck converter, 0.4 V~3.4 V output, 25 mV/step, up to 500 mA
  • SW3: core buck converter, 0.4 V~1.975 V output, 6.25 mV/step, up to 500 mA
  • Low power mode for extra power saving
• One Buck-Boost converter
  • Ultra-low quiescent current
  • High-efficient boost mode
  • Seamlessly transition between Buck, Boost and Buck-Boost modes
  • 2.5 V~5.5 V input and 1.8 V~5.0 V output, 25 mV/step, up to 500 mA
• Four LDOs
  • LDO1: always-on LDO, 0.8 V~3.0 V output, 25 mV/step, up to 10 mA
  • LDO2: system LDO/Load switch, 0.5 V~1.95 V output, 25 mV/step, up to 200 mA
  • LDO3: system LDO/Load switch, 0.5 V~1.95 V output, 25 mV/step, up to 200 mA
  • LDO4: LDO, 0.8 V~3.3 V output, 25 mV/step, up to 200 mA
• Optimized for Ultra-Low IQ
  • Meet stringent regulatory standards and extend battery standby time, ensuring compliance and superior performance.
• Advanced Diagnostics & Maintenance
  • Allows MCU to use HW pins for MODE CONTROL and RESE
• Flexible Integration, Simplified Design
  • Build sleek, space-saving, compact power solution designs for Medical and Personal Health applications with full support for i.MX RT500/600/700 platforms.
• Dynamic Voltage Scaling (DVS) Control / Enhanced Battery Gauge Management
  • Maximize processor efficiency and extend battery life through intelligent DVS and mode selection.
  • Enable seamless MODE CONTROL and RESET via hardware pins for faster, more reliable system management.
  • Offered in 2.9 mm x 3.0 mm, 7 x 7 bump-array, 0.4 mm pitch WLCSP package
  • 1 MHz I²C-bus target interface
  • Ambient temperature range -40°C to +85°C

Applications

• AR/VR headset and AI smart glasses
• Hearable smartphone
• Smart home (consumer)
  • Smart watch and wristband
  • Major home appliances
  • Smart appliances
• Healthcare
  • Continuous Glucose Monitoring (CGM)
  • Continuous Glucose Monitoring (CGM) reader
  • Hearing aids
  • Insulin pen
  • Personal Diabetes Manager (PDM)
  • Smart inhaler