FEATURES
INTEGRATED POWER SUPPLIES • Four DC/DC Step-Down (Buck) Regulators
2 x 2.8A, 2 x 1.5A • Five Low-Noise LDOs
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FEATURES
INTEGRATED POWER SUPPLIES Four DC/DC Step-Down (Buck)
Regulators
2 x 2.8A, 2 x 1.5A Five Low-Noise LDOs
2 x 150mA, 3 x 350mA Three Low-Input Voltage LDOs
1 x 150mA, 2 x 350mA One Low IQ Keep-Alive LDO Backup Battery Charger
SYSTEM CONTROL AND INTERFACE Four General Purpose I/O with PWM Drivers I2C Serial Interface Interrupt Controller
SYSTEM MANAGEMENT Reset Interface and Sequencing Controller
Power on Reset Soft / Hard Reset Watchdog Supervision Multiple Sleep Modes Thermal Management Subsystem
APPLICATIONS
Tablet PC Mobile Internet Devices (MID) E-books Personal Navigation Devices Smart Phones
ACT8846
Advanced PMU for Multi-core Application Processors
GENERAL DESCRIPTION
The ACT8846 is a complete, cost effective, and highly-efficient ActivePMUTM power management solution optimized for the power, voltage sequencing and control requirements of Rockchip RK31x8 application processor family.
The ACT8846 features four fixed-frequency, currentmode, synchronous PWM step-down converters that achieve peak efficiencies of up to 97%. These
regulators operate with a fixed frequency of 2.25MHz, minimizing noise in sensitive applications and allowing the use of small external components. These buck
regulators supply up to 2.8A of output current and can fully satisfy the power and control requirements of the multi-core application processor. Dynamic Voltage Scaling (DVS) is supported either by dedicated control pins, or through I2C inte...
