EMC2112 RPM-Based Linear Fan
Controller with Hardware
Thermal Shutdown PRODUCT FEATURES Datasheet General Description Applications The EMC2112 is an SMBus, closed-loop, RPM-based
fan driver with hardware (HW) thermal shutdown and
reset controller. The EMC2112 offers a single High Side
fan driver capable of sourcing up to 600mA from a 5V
supply. В„ The EMC2112 utilizes Beta Compensation (an
implementation of the BJT or transistor model for
thermal diodes) and Resistance Error Correction (REC)
to accurately monitor up to three (3) external
temperature zones. These features allow great accuracy
for CPU substrate thermal diodes on multiple process
geometries as well as with discrete diode-connected
transistors. Both Beta Compensation and REC can be
disabled on the EMC2112 to maintain accuracy when
monitoring AMD thermal diodes. В„ В„
„ Features The EMC2112 also provides 5V supply �power good’
function with a threshold of 4.5V. This function is
provided on the RESET pin. 1% accuracy with external clock input
3% accuracy with internal clock
Internal clock can be used as a source
Aging fan detection „ Integrated Linear Fan Driver „ HW Thermal Shutdown (SYS_SHDN) — 600mA drive capability
— 1В°C incremental set points for thermal shutdown …