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Dialog dials up multi-output power supply chip for mobiles

Steve Bush
Tuesday 10 February 2009 10:09

Dialog Semiconductor has introduced a multi-output power supply chip for mobile phones with a difference - it has peripherals including a touch screen controller and watchdog timer.

Aimed at smart phones and media players, the DA9052 has 300 configurable functions.

"There are software drivers under development for Windows CE and Linux, and Windows Mobile is a possibility," Dialog's marketing director Mark Jacob told EW.

Configuration is stored in a one-time programmable memory "closer to poly-fuse than EPROM", said Jacob.

This can be programmed on the bench using the GUI-based configuration software, or blown by Dialog to customer specification before it leaves the factory.

There are four DC-DC buck converters as well as 10 programmable LDOs. "The LDOs are low-input voltage," said Jacob. "Eight out of 10 of them are capable of running from 1.5V."

Power rail sequencing is included and also on-board are options to turn off some supplies in wake-up and sleep modes, 16 GPIOs, a temperature sensor, and a 10bit ADC.

A dual-input switching DC/USB battery charger allows up to 1.2A to be drawn from a lithium battery. USB power inputs are over-voltage protected and the embedded power path controller manages energy flow between an AC adapter, USB cable and battery, whilst maintaining USB power specification compliance via the D+/D- data lines - all without processor interaction.

The package is a 7x7mm QFN86.

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