AXP209 an adaptive USB-Compatible PWM charger

توضیحات بیشتر AXP209

AXP209 is designed to be a highly-integrated power system management IC that is optimized for applications requiring single-cell Li-battery (Li-Ion/Polymer) and multiple output DC-DC converters.

AXP209 integrates

an adaptive USB-Compatible PWM charger
2-way step-down converter (Buck DC-DC converter)
5-channel linear regulator device (LDO) voltage / current / temperature multi-channel 12-Bit ADC
4 configurable GPIO. Sustaining Card power system security the stable
AXP209 integrated over / under voltage (OVP / UVP), over temperature (OTP), overcurrent protection (OCP) circuit.

Features

Automatic gapless power source change (IPS- Intelligent Power Select)
- Voltage range: 2.9 V - 6.3V (AMR:-0.3V-11V)
- Configurable high efficient IPS system
- Adjustable USB or AC-adapter current limit (4.4V/900mA/500mA/100mA)
- Battery Power Path resistance less than 75mΩ
Fully integrated PWM Charger
- Maximum charging current of up to 1.8A
- Full support USB charging
- Battary voltage range: 4.1V/4.15V/4.2V/4.36V
- Battery temperature monitoring
- Automatic charging process control
- Support charger LED
- Automatically adjust charge current according to system load
Backup battery
- Support backup battery (can be used for RTC module)
- Support for backup battery, charging current can be set
2 synchronous buck DC-DC converters
- DC-DC2: can be adjusted between 0.7-2.275V 25mV/step, drive capability 1.6A support VRC
- DC-DC3: can be adjusted between 0.7-3.5V, 25mV/step, drive capacity 1.2A
5 low drop-out linear regulators
- LDO1: Always-on 30mA
- LDO2: Low noise with voltage from 1.8V to 3.3V adjustable 100mV/step, drive capability 200mA
- LDO3: 0.7-3 .5 V adjustable, 25mV/step, Drive capacity 200mA
- LDO4: low noise LDO, 1.8V-3.3V adjustable 100mV/step, drive capability of 200mA
- LDO5: low-noise LDO, 1.8-3.3V adjustable 100mV/step, drive capability 50mA
Timer (Timer)
- 7bit Timer, Timing Range 1127 minutes
- Timer outputs interrupts
Signal acquisition system
- Built-in 12 Bit ADC, 12-way for current and voltage control with two additional external signal input
- Built-in Fuelgauge system
- Provides information, such as power consumption (mA or mW), the remaining battery capacity (% or mAh), the state of charge (%) and the remaining time for battery to charge
- Two-level low-power warning and protection
- Internal temperature sensor
Application Processor Interface (Host Interface)
- TWSI (I2C) interface for data exchange
- IRQs and Sleep Managment
- Built-in GPIO
- Built-in configurable timer
- Provide 12 registers for data storage during system power-off
System Management
- Soft reset and hard reset support
- Soft and hard power shutdown support
- Support for external wake source
- Support the output voltage monitoring, self-diagnostic function
- Output PWROK, indicating system reset or shutdown instructions
- External power detection (insert / remove / drive capacity)
- Supports soft power-on for input & output
- Over/Under-voltage protection (OVP / UVP)
- Overcurrent protection (OCP)
- Overtemperature protection (OTP)
- Support OTG VBUS power state setting / monitoring
Highly integrated
- Internal precision reference voltage (0.5%)
- Built-in MOSFET
- timing and the output voltage can be customized
Decryption module
- 128bit OTP password storage
- dynamic real-time decryption algorithm