LM5066 provides robust protection and precision monitoring for 10- to 80-V systems. Programmable UV, OV, ILIMIT, and fast-short circuit protection allow for customized protection for any application. Programmable FET SOA protection sets the maximum power the FET is allowed to dissipate under any condition. The programmable fault timer (tFAULT) is set to avoid nuisance trips, ensure start-up, and limit the duration of over load events.
In addition to circuit protection, the LM5066 supplies real-time power, voltage, current, temperature, and fault data to the system management host through the I2C / SMBus interface. PMBus compliant command structure makes it easy to program the device. Precision telemetry enables intelligent power management functions such as efficiency optimization and early fault detection. LM5066 also supports advanced features such as I/V/P averaging and peak power measurment to improve system diagnostics.
LM5066I is pin-to-pin compatible with the LM5066 and offers improved telemetry accuracy and supports the Read_Ein command to monitor energy. See Table 1 for a detailed comparison.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
LM5066 | PWP (28) | 9.70 × 4.40 mm2 |
SPACE
Changes from H Revision (July 2014) to I Revision
Changes from G Revision (February 2013) to H Revision
Changes from F Revision (February 2013) to G Revision
Changes from A Revision (May 2014) to B Revision
Table 1 summarizes the differences between the LM5066 and the LM5066I. Note that the current monitoring accuracy of the LM5066I is much better at the ILIM = 26 mV setting, but is comparable at the 50-mV setting. For many applications with lower power, using the LM5066 at the 50-mV setting is a great option. However, for higher power applications upgrading to LM5066I and using the ILIM = 26 mV setting will lead to significant power savings (approximately 24 mV × ILOAD). In addition, the higher accuracy and energy monitoring capability can enable further improvements in system efficiency, which is critical in high power applications.
KEY PARAMETERS | LM5066 | LM5066I |
---|---|---|
Voltage monitoring | ±2.7% | ±1.25% |
Current monitoring (ILIM = 26 mV) | ±4.25% | ±1.75% |
Power monitoring (ILIM = 26 mV) | ±4.5% | ±.2.5% |
Current monitoring (ILIM = 50 mV) | ±3% | ±3.5% |
Power monitoring (ILIM = 50 mV) | ±4.5% | ±4.5% |
Supports Energy Monitoring via Read_EIN command | No | Yes |