MIC2580A Datasheet, PDF (17/21 Pages) Micrel Semiconductor – Hot-Swap PCI Power Controller

MIC2580A
Functional Diagram
12VIN
5VIN
3VIN
CSLEW
C_SLEW
Slew
Control
Current
Limit
/ON
Control Logic
and
Power Good
/PCIRST
M12VIN
MIC2580A
Micrel, Inc.
GND
12V
Switch
5V
Switch
Control
3.3V
Switch
Control
Precharge
Supply
Reset
Thermal
Shutdown
t_D = 20µs
(delay)
t_D = 20µs
(delay)
–12V
Switch
12VOUT
5VSENSE
5VGATE
5VOUT
R_5SNS
Q_5OUT
3VSENSE
3VGATE
3VOUT
R_3SNS
Q_3OUT
VPCHG
/POR
CRST
C_RST
/FAULT
CSTART
C_START
/EPWRGD
/PWRGD
/LPCIRST
M12VOUT
February 2005
17
MIC2580A