Power Controller Features Energy Management Unit

Sept. 20, 2006
National Semiconductor's second-generation, digitally programmable LP5552 PowerWise energy management unit and advanced power controller intellectual property package is designed for reducing power consumption in battery-powered handheld consumer products.

National Semiconductor’s second-generation, digitally programmable LP5552 PowerWise energy management unit (EMU) and advanced power controller (APC2) intellectual property (IP) package is designed for reducing power consumption in battery-powered handheld consumer products. The APC2 IP pairs with the LP5552 EMU to reduce the power consumption of high data-rate digital processors with frequency-scaling capability by up to 70%.

The APC2 IP is compatible with Intelligent Energy Manager (IEM) frequency-scaling technology from ARM. The LP5552 and APC2 are compliant with the PowerWise Interface (PWI) 2.0 open-industry standard introduced by National Semiconductor and ARM earlier this year.

The LP5552 supports the PWI 2.0 interface, a 2-pin, high-speed serial power management control interface for advanced processor power management. To enable adaptive voltage scaling, the LP5552 includes two digitally programmable, 600 mA, 0.6-V to 1.2-V buck regulators with up to 90% efficiency and excellent transient performance for rapidly varying digital loads. In addition, it has five programmable low dropout (LDO) regulators with output voltages ranging from 0.6 V to 3.3 V.

The linear regulators support output current ranges from 50 mA to 250 mA. Two of the linear regulators contain a low quiescent (lq) current-retention mode for minimizing system power consumption when SoC processors are inactive, but need fast recovery time.

Available in a lead-free, 36-bump micro SMD package, the LP5552 has excellent package thermal characteristics and operates over the full temperature range from –40°C to +85°C, with input voltages from 2.7 V to 4.8 V. The LP5552 is available now and is priced at $5.50 in 1000-unit quantities. Samples are also available. The APC2 is available for licensing from National and ARM.

Sponsored Recommendations

TTI Transportation Resource Center

April 8, 2024
From sensors to vehicle electrification, from design to production, on-board and off-board a TTI Transportation Specialist will help you keep moving into the future. TTI has been...

Cornell Dubilier: Push EV Charging to Higher Productivity and Lower Recharge Times

April 8, 2024
Optimized for high efficiency power inverter/converter level 3 EV charging systems, CDE capacitors offer high capacitance values, low inductance (< 5 nH), high ripple current ...

TTI Hybrid & Electric Vehicles Line Card

April 8, 2024
Components for Infrastructure, Connectivity and On-board Systems TTI stocks the premier electrical components that hybrid and electric vehicle manufacturers and suppliers need...

Bourns: Automotive-Grade Components for the Rough Road Ahead

April 8, 2024
The electronics needed for transportation today is getting increasingly more demanding and sophisticated, requiring not only high quality components but those that interface well...

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!