MIC2342R-2YTQ Micrel Inc, MIC2342R-2YTQ Datasheet - Page 29

• Manufacturer Part Number: MIC2342R-2YTQ
• Description: Dual -Slot PCI Express Hot-Plug Controller
• Manufacturer: Micrel Inc
• Type: Hot-Swap Controllerr

Specifications of MIC2342R-2YTQ

• Applications: General Purpose, PCI Express
• Internal Switch(s): No
• Current Limit: Adjustable
• Voltage - Supply: 3.3V, 12V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-2996

power ground) trace should be the same width as the
positive voltage power traces (input/load) and isolated
from any ground and signal planes so that the
controller’s power is common mode. Also, these traces
should be as short as possible in order to minimize the
IR drops between the input and the load. As indicated in
the Pin Description section, an external connection must
be made that ties together both channel inputs ((+)
Kelvin sense) of each Main power rail (i.e., 3VINA and
3VINB, 12VINA and 12VINB must be externally
connected). These connections should be implemented
directly at the chip. Insure that the voltage drop between
the two (+) Kelvin sense inputs for each rail is no greater
than 0.2mV by using a common power path for the two
inputs (e.g., 12VINA, 12VINB).
plated-through vias will be necessary to make circuit
connection to the power, ground, and signal planes on
multi-layer PCBs.
Micrel, Inc.
June 2008
Figure 12. 4-Wire Kelvin Sense Connections for R
Finally, the use of
SENSE
29
Figure 13. Current Limit Sense Filter for Noisy Systems
MIC2342/2342R
M9999-062008-B