Product category: Power Supply ICs and Controllers
News Release from: Dialog Semiconductor | Subject: DA9031
Edited by the Electronicstalk Editorial Team on 30 September 2003
Power manager looks
to next-generation multimedia
The DA9031 is an advanced power management controller IC designed to support high-performance multimedia in high-end PDAs and wireless handsets based on the upcoming Intel Bulverde processor
The DA9031 is an advanced power management controller IC designed to support high-performance multimedia applications in high-end PDAs and wireless handsets based on the upcoming Intel Bulverde processor for portable computing platforms. The new DA9031 is a highly integrated, complete, single-chip power management controller IC connecting directly to the battery and designed for the growing market of PDAs and wireless handsets capable of capturing and transmitting high quality digital still pictures and video clips.
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Based on Dialog's proven mixed signal, low power CMOS technology, key features that make the new controller ideal for such applications are: a high-efficiency DC/DC buck convertor supporting Intel Dynamic Voltage Management - this is important in adjusting the supply voltage according to processor operating frequency, enabling power consumption to be optimised according to the application being run; programmable white LED drivers with 20V boost converter to drive two channels of four LEDs very efficiently - this is an important feature for screen and keyboard backlights in the PDA and wireless handset; and a 500mW 8ohm loudspeaker driver with volume and anti-pop control, for driving multimedia and other audio applications.
The chip provides stable, low noise power supplies for all the core circuits within the PDA or handset, with its additional features including: 13 high-performance low-dropout programmable voltage regulators using Dialog's patented Smart Mirror technology; real-time clock supply; and boost convertors for SIM card, USB interface and vibrator drivers.
The DA9031 includes a programmable multimode battery charger for single cell, 4.2V lithium chemistry battery packs, and supports charging currents up to 1.4A.
Automatic charger detection and battery pack temperature monitoring are also included within this section of the device.
Smart Mirror is a technique allowing the bias of a regulator to be reduced automatically as demand falls and gives dynamic quiescent current control - enabling high power supply rejection ratio and dynamic performance over a wide range of operating currents, without being constrained by the usual design compromise of being overbiased under all conditions except when under maximum load.
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Overall, this means that designers can extend standby and operating times without requiring additional software to control low-power modes or needing complex PCB design with hard wired low power select lines.
Samples of the DA9031 will be available in the fourth quarter of 2003, with the device incorporated in a 196-pin BGA, 0.5mm pitch package.
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