MIC5060_10 Datasheet, PDF (9/12 Pages) Micrel Semiconductor – Ultra Small High-Side MOSFET Driver

Micrel, Inc.
shifted and sent to an I/O port of a microcontroller for
intelligent control.
Current Shunts (RS). Low valued resistors are necessary
for use at RS. Resistors are available with values ranging
from 1 mΩ to 50mΩ, at 2 to 10W. If a precise overcurrent
trip point is not necessary, then a non-precision resistor or
even a measured PCB trace can serve as RS. The major
cause of drift in resistor values with such resistors is
temperature coefficient; the designer should be aware that
a linear, 500ppm/°C change will contribute as much as
10% shift in the overcurrent trip point. If this is not
acceptable, a power resistor designed for current shunt
service (drifts less than 100ppm/°C), or a Kelvin-sensed
resistor may be used.†
MIC5060
Figure 4. High Side Driver with Overcurrent Shutdown
̈ Suppliers of Precision Power Resistors:
Dale Electronics, Inc., 2064 12th Ave., Columbus, NE 68601
[phone]
International Resistive Co., P.O. Box 1860, Boone,NC 28607-1860
[phone]
Isotek Corp., 566 Wilbur Ave., Swansea, MA 02777
[phone]
Kelvin, 14724 Ventura Blvd., Ste. 1003, Sherman Oaks, CA 91403-3501
[phone]
RCD Components, Inc., 520 E. Industrial Pk. Dr., Manchester, NH 03103
[phone]
Ultronix, Inc., P.O. Box 1090, Grand Junction, CO 81502
[phone]
February 2010
9
M9999-021610-C