Freescale expands QUICCsupply portfolio to address PowerQUICC(tm) processor family and communications industry needs

Proven power IC family shrinks board area and speeds development time for telecom, data and networking designers

(PresseBox) ( Dallas / Texas, )
Freescale Semiconductor (NYSE: FSL, FSL.B) is introducing the third edition of QUICCsupply power management integrated circuits (ICs) to support its industry-leading PowerQUICC(tm) communications processors.

The MC34703 integrates system power functions into a single small package, making it an all-in-one plug-and-play product for PowerQUICC III and other communications processors for telecom and networking applications.

"Freescale's QUICCsupply devices present a very interesting and significant new addition to the processor power market," said Chris Ambarian, senior analyst in power management with iSuppli Corporation. "They are flexible enough to provide many control and sequencing options when used with many other processors, while being custom-tailored to make powering Freescale's latest processor line quick and simple. It's a great product strategy."

Manufactured with Freescale's proprietary SMARTMOS(tm) process, QUICCsupply ICs include key features such as power sequencing, voltage margining, system protection, programmable output, reset and watchdog functions. The MC34703 dual output power supply IC has a 10A synchronous buck converter with integrated high-current low- Rds(on), and a low dropout (LDO) controller that works with a choice of external MOSFETs.

For applications ranging from telecom and network cards to industrial controllers, the MC34703's innovative integration of logic and power minimizes the need for external components, which reduces the board space required by up to 50 percent and supports switching speeds up to 400kHz.

MC34703 technical features

- Wide input voltage range - 2.8V to 13.5V
- Synchronous Buck Regulator output to 10A (nominal) - for Core
- Integrated power MOSFETs
- LDO controller output up to 2A - for I/O and bus
- Adjustable switching frequency (200kHz to 400kHz)
- Selectable power sequencing - normal and reverse order selectable
- Inter-IC bus voltage margining and programmable watchdog timer
- Adjustable slew rate
- Power-ON reset with adjustable delay timer
- Soft start - both outputs
- Built-in under-voltage, over-current and thermal protection circuitry
- Advanced packaging - low-height, small footprint 33-lead PQFN
- Restriction of hazardous substances (RoHS) compliant

For more information about the MC34703 and the entire QUICCsupply family, visit

Price and availability

The MC34703 QUICCsupply 3 power IC is currently available in production quantities at a suggested resale price of $3.75 (USD) in 10,000-piece quantities.

Adjustable output MC34703 evaluation boards are available now for a suggested resale price of $100.30 (USD). The KIT34703PNBEVBE development tool incorporates 10-turn precision trimmer potentiometers that enable individual adjustment of V-OUT and V-LDO to the desired voltages. The KIT34703PNBEVBE board also includes LED indicators for both regulator outputs, and jumper positions to easily select the desired voltage power-up/power-down sequencing. Board dimensions measure 38mm x 21mm.
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