Datasheet Microchip MIC2342

MIC2342/2342R
Dual-Slot PCI ExpressВ® Hot-Plug
Controller General Description Features The MIC2342 is a dual-slot power controller supporting the
power distribution requirements for Peripheral Component
Interconnect Express (PCI ExpressВ®) Hot-Plug compliant
systems. The MIC2342 provides complete power control
support for two PCI Express slots, including the 3.3VAUX
defined by the PCI Express standards. Support for the
12V, 3.3V, and 3.3VAUX supplies includes programmable
gate voltage slew-rate control, voltage supervision,
programmable current limit, and circuit breaker functions.
These features provide comprehensive system protection
and fault isolation. Additionally, in the event of an
overcurrent fault on 3.3VAUX that “trips” the circuit breaker
to cause the 3.3VAUX output to shut down, the MAIN
outputs (3.3V and 12V) for the affected 3.3VAUX slot, A or
B, will also be shut down. The MIC2341 controller
provides truly independent output operation for MAIN and
AUX.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com. Supports two independent PCI Express slots MAIN & AUX outputs are inter-dependent during AUX
overcurrent conditions 12V, 3.3V, and 3.3VAUX supplies supported per PCI
Express Specification v1.0a, v.2.0 Integrated Power MOSFETS for 3.3VAUX rails Standby Operation for Wake-on-LAN applications with …