MIC2342R-2YTQ Micrel Inc, MIC2342R-2YTQ Datasheet - Page 22

• 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

In very cost-sensitive applications, the system design
engineer can save the cost of the (2) external
CFILTER[A/B] capacitors by using only the digital filter
and/or the Auto-retry delay counters. This mode is
automatically invoked by connecting the MIC2342 or the
MIC2342R’s CFILTER[A/B] pins directly to AGND. In this
configuration, the primary OC detectors’ response time
t
FLT
Micrel, Inc.
June 2008
is equal to t
DFLT
(or 40ms as above) In Figure 7,
Figure 6. MIC2342R Auto-Retry Timing Diagram and Operation
22
the gate drive circuits have taken control and regulate
the inrush current to charge the load capacitances in
current limit. Once the internal digital filter delay counter
terminates, the circuit breaker trips off. As in the
previous case, the MIC2342 latches off and the
MIC2342R initiates the auto-retry delay counter to count
up to 820ms before attempting another power-up cycle.
MIC2342/2342R
M9999-062008-B