Active-Semi ACT8840
The ACT8840 is a complete, cost effective, and highly-efficient ActivePMUTM power management solution optimized for the power, voltage sequencing and control requirements of general Single-core application processor. The ACT8840 features four fixed-frequency, current-mode, 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.| Part No. | ACT8840 |
|---|---|
| Datasheet | ACT8840 Download |
| Manufacturer |  Active-Semi |
| Description | Advanced PMU |
| Buy | Stock & Price |
FEATURES
INTEGRATED POWER SUPPLIES● Four DC/DC Step-Down (Buck) Regulators 2 x 1.8A, 2 x 1.3A
● 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
● Six 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)
● Ebooks
● Personal Navigation Devices
GENERAL DESCRIPTION
These buck regulators supply up to 1.8A of output current and can fully satisfy the power and control requirements of the single-core application processor. Dynamic Voltage Scaling (DVS) is supported either by dedicated control pins, or through I2C interface to optimize the energy-pertask performance for the processor. Thi...
