Date: 24/02/2010

Protection and control IC with on-chip PM bus from National Semiconductor

National Semiconductor has introduced the LM25066, a new system monitoring, protection and control integrated circuit (IC) with on-chip power management bus (PMBus) support. The LM25066 IC provides a solution to improve system reliability and reduces operating expenses in data centers, and suitable for blade servers, storage networking systems, routers/switches and modular subsystems applications.

The LM25066 continuously supplies the system management host with real-time power, voltage, current, temperature and fault data for each blade subsystem. The LM25066's system management bus (SMBus) communications interface delivers this data using the PMBus protocol. The host's system diagnostic and optimization routines use the data to increase system reliability and minimize the data center's total power consumption.


The key features of LM25066 IC are,

Operating input voltage ranges from +2.9V to +17V
Current limit threshold of 25 mV or 50 mV
I 2C/SMBus interface and PMBus compliant command structure
Real time system telemetry monitoring
Current measurement accuracy of ±3%, 25 mV threshold
True Input Power from simultaneous sampling of VIN and IIN
Power limited control of hotswap insertions, inrush current, circuit breaker functions
Multi-level configuration and monitoring of system fault conditions via PMBus
Full featured application design and development software

The LM25066 also provides accurate monitoring of critical system power consumption and fault conditions.

Operating temperature range: -40°C to 125°C

Package: 4 mm by 5 mm, 24-lead LLP package
Price: Each $5.95 for 1k pieces
Availability: Now in samples, full production volumes expected in Q2 of 2010

For more details visit www.national.com