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AXP229

Advanced PMU for Multi-core Application Processors integrated High-Accuracy Gas Gauge and Flash Charger

FEATURES

· IPS
  - Input voltage range: 2.9V~6.3V (AMR: -0.3V~ 11V)
  - Configurable IPSsystem
  -  Adaptive USB/AC adaptor voltage/current limit (4.0V/900mA/500mA)

· Flash Charger

   - Integrated MOSFET charge current up to 2.2A
   - Battery temperature monitor
   - Fully supports USB charge
   - High charge accuracy, ±0.5% accurency
   - Supports 4.1V/4.2V/4.24V/4.35V battery
   - Automatic charge control
   - Supports LED to indicate charge status
   - Automatic charge current adjustment based on system load
· Buck DC-DC Converters (5-CH)
   - DC-DC1: 1.6V~3.4V adjustable, 100mV/step, load current up to 1.4A
   - DC-DC2: 0.6V~1.54V adjustable, 20mV/step, load current up to 3A, supports VRC (Voltage Ramp Control)
   - DC-DC3: 0.6V-1.86V adjustable, 20mV/step, load current up to 3A
   - DC-DC4: 0.6V-1.54V adjustable, 20mV/step, load current up to 0.6A
   - DC-DC5: 1.0V-2.55V adjustable, 50mV/step, load current up to 2A 

· LDOs (12-CH)
   - RTC_VCC: 100mA, always valid
   - ALDO1/2: low noise LDO, 0.7V~3.3V adjustable, 100mV/step, load current up to 300mA
   - ALDO3: low noise LDO, 0.7V~3.3V adjustable, 100mV/step, load current up to 200mA
   - LDOIO0/LDOIO1: low noise LDO, 0.7V~3.3V adjustable, 100mV/step, load current up to 100mA
   - DLDO1: 0.7~3.3V adjustable, 100mV/step, 3.4~4.2V adjustable, 200mV/step, load current up to 400mA
   - DLDO2 : 0.7~3.3V adjustable, 100mV/step, load current up to 100mA

   - ELDO1 : 0.7~3.3V adjustable, 100mV/step, load current up to 400mA

   - ELDO2/ ELDO3: 0.7~3.3V adjustable 100mV/step, load current up to200mA
   - DC5LDO: 0.7V~1.4V adjustable, 100mV/step, load current up to 200mA
· Switch (3-CH)
   - DC1SW: internal resistance 100mOhm, power sourced from DCDC1

   - SWOUT: internal resistance 100mOhm, power sourced from SWIN
  - CHGLED:100mA sink strength, can be used to drive the motor and charging LED

· Host Interface
   - P2WI (Push-Pull Two Wire Interface) for host communication
   - Configurable interrupt management
   - Flexible pin function configuration: 2 GPIOs can be set as IO or LDO, etc
   - Integrated timer
   - 12 groups of registers for system shutdown data storage

· E-GaugeSystem
   - Highly accurate gauge system with dual modes
   - Easy Mode: highly adaptive to different powers
   - Exact Mode: highly accurate data is provided for specific power(2%)
   - Provides rich power information, such as  instantaneous power consumption (mA or mW), remaining power (% or mA), charge   

     status (%), remaining power life, charge time, etc.
   - Low power warning and low power protection
   - Provides die temperature 

· System  Management
   - Supports soft reset and hard reset
   - Supports soft shutdown and hard shutdown
   - Supports external wakeup triggers
   - Supports PWROK for system rest or shutdown indication
   - External power detection(insert/remove/drive strength deficiency)
   - All output voltage support software boot
   - Over/Under-voltage protection (OVP/UVP)
   - Over-current protection (OCP)
   - Over-temperature protection (OTP)
· High Integration
   - Highly accurate (0.5%) reference voltage
   - Integrates MOSFET



Description

AXP229 is a highly integrated PMIC targeted at single cell Li-battery (Li-ion or Li-polymer) applications that require multi-channe power conversion outputs.It provides an easy and flexible power management solution for multi-core processors to meet the increasingly complex and accurate requirements of power control.


AXP229 comes with an adaptive USB3.0 compatible Flash Charger that supports up to 94% efficiency and 2.2A charge current. It also provides 21 power output channels (including 5-CH DCDC, with efficiency up to 95%). To ensure the security and stability of the power system, AXP229 provides multiple-channel 12-bit ADC for voltage/current temperature monitoring and integrates protection circuits such as OVP,UVP,OTP,and OCP. Moreover, AXP229 integrates a unique E-Gauge™ system which simplifies battery power measurement.


In addition, AXP229 contains a fast interface for the system to dynamically adjust output voltage and enable work mode switch in order to optimize battery life.


Importantly, AXP229 also features an IPS™ (Intelligent Power Select) circuit that transparently selects power path among USB, external adaptor, Li-battery, and system load, allowing the system to function normally when only running on external input power and not the battery.


 AXP229 is available in 8mm x 8mm x 0.75mm 68-pin QFN package.

APPLICATIONS

·     Tablets, smartphones, smart TVs, DVRs
·     UMPC and UMPC-like, student computers

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TYPICAL APPLICATION DIAGRAM
PIN CONFIGURATION