AXP802

The AXP802 is the PMIC (Power Management IC) developed by X-Powers, a sister company of Allwinner.

Overview

AXP802 is A customized PMIC for multi-power rails required SOC platform.

AXP802 is a highly integrated PMIC targeting at Li-battery (Li-ion or Li-polymer) applications that require multi-channel power conversion outputs. It provides an easy and flexible power management solution for processors to meet the increasingly complex and accurate requirements on power control.

AXP802 comes with an adaptive USB3.0-compatible Flash Charger that supports up to 2.8A charge current. It also supports 22 channels power outputs (including 6-CH DCDCs). To ensure the security and stability of the power system, AXP802 provides multiple channels 12-bit ADC for voltage/current/temperature monitor and integrates protection circuits such as OVP, UVP, OTP, and OCP. Moreover, AXP802 features a unique E-Gauge™ (Fuel Gauge) system, making power gauge easy and exact.

In addition, AXP802 embraces a fast interface for the system to dynamically adjust output voltage and enable power outputs so that the battery life can be extended to the largest extent.

Besides, AXP802 features an IPS™ (Intelligent Power Select) circuit to transparently select power path among ACIN/USB and Li-battery to system load.

AXP802 is available in 8mm x 8mm 68-pin QFN package, and the package is Pb free.

Features

• 6 Frequency spread DCDCs

• DCDC1: PFM/PWM, 1.6-3.4V, 0.1V/step, 19 steps, IMAX=1.5A
• DCDC2: PFM/PWM, 0.5-1.20V, 10mV/step, 1.22-1.30V, 20mV/step, IMAX=3A, DVM
• DCDC3: PFM/PWM, 0.5-1.20V, 10mV/step, 1.22-1.30V, 20mV/step, IMAX=3A, DVM
• DCDC4: PFM/PWM, 0.5-1.20V, 10mV/step, 1.22-1.30V, 20mV/step, IMAX=3A, DVM
• DCDC5: PFM/PWM, 0.8-1.12V, 10mV/step, 1.14-1.84V, 20mV/step, IMAX=2.5A, DVM, default set by DC5SET
• DCDC6: PFM/PWM, 0.6-1.10V, 10mV/step, 1.12-1.52V, 20mV/step, IMAX=2.5A, DVM
• DCDC2/3/4: 71+5 steps; DCDC5:33+37 steps; DCDC6: 51+21steps
• DVM (Dynamic Voltage scaling Management) ramp rate: 2.5mV/us at DCDC frequency 3MHz
• Dual-Phase: DCDC2/3 can be set as Dual-phase, and DCDC5/6 can be set as another Dual-phase

• 16 LDOs & Switch

• RTCLDO: fixed 3.0V or 1.8V, IMAX=100mA, always enable
• ALDO1: Analog LDO, 0.7-3.3V, 100mV/step, 27 steps, IMAX=500mA, input is ALDOIN
• ALDO2: Analog LDO, 0.7-3.3V, 100mV/step, 27 steps, IMAX=300mA, input is ALDOIN
• ALDO3: Analog LDO, 0.7-3.3V, 100mV/step, 27 steps, IMAX=200mA, input is ALDOIN
• DLDO1: Analog LDO, 0.7-3.3V, 100mV/step, 27 steps; IMAX=500mA, input is DLDOIN
• DLDO2: Analog LDO, 0.7-3.4V, 100mV/step; 28 steps; 3.4-4.2V, 200mV/step, 4 steps. IMAX=400mA, input is DLDOIN
• DLDO3: Analog LDO, 0.7-3.3V, 100mV/step; 27 steps, IMAX=300mA, input is DLDOIN
• DLDO4: Analog LDO, 0.7-3.3V, 100mV/step; 27 steps, IMAX=500mA, input is DLDOIN
• ELDO1: Digital LDO, 0.7-1.9V, 50mV/step; 25 steps, IMAX=400mA, input is ELDOIN
• ELDO2: Digital LDO, 0.7-1.9V, 50mV/step; 25 steps, IMAX=200mA, input is ELDOIN
• ELDO3: Digital LDO, 0.7-1.9V, 50mV/step; 25 steps, IMAX=200mA, input is ELDOIN
• FLDO1: Digital LDO, 0.7-1.45V, 50mV/step, 16 steps, IMAX=300mA, input is FLDOIN
• FLDO2: Digital LDO, 0.7-1.45V, 50mV/step, 16 steps, IMAX=100mA, input is FLDOIN
• GPIO0LDO: Analog LDO, 0.7-3.3V, 100mV/step, 27 steps, IMAX=100mA, input is ALDOIN
• GPIO1LDO: Analog LDO, 0.7-3.3V, 100mV/step, 27 steps, IMAX=150mA, input is ALDOIN
• CHGLED: GND switch for motor or LED, IMAX=100mA

• TWI (Two wire serial interface) supporting standard and quick slave mode, slave Address is 0x68/0x69 or 0x6A/6B by customer
• RSB (Reduced Serial Bus) supporting for Allwinner platform, slave Address is 0x01D1 or 0x0273 by customer
• Intelligent Power Select (IPS), VBUS-IPSOUT is 125mΩ typically, and ACIN-IPSOUT is 80mΩ typically.
• Adaptive Li battery PWM charger with current total up to 2.8A --Battery Fuel Gauge and coulomb counter
• Power output on/off press key
• Internal Temperature sensor and protection
• Safe and Soft start up

Spec Sheets

• AXP802 Datasheet V1.0 (PDF, 2.03 MB, 83 pages, 2017-07-05)