MIC2562A
Micrel
5V
System
Power
Supply
12V
(opt)
VPP IN VCC3 IN VCC5 IN
(opt)
VPP1
VPP2
PCMCIA
Card Slot
EN0
EN1
MIC2562
VCC
PCMCIA
Card Slot
Controller
VCC5_EN
VCC3_EN
Figure 5. PC Card Slot Power Control Application Without an Available 3.3V V
CC
Note: V
CC3
IN and V
CC5
IN are driven together. The MIC2562A is powered by the V
CC3
IN line. In this configuration,
V
CC
OUT will be 5V when either V
CC3
or V
CC5
is enabled from the logic table. Take advantage of the lower switch resistance
of the V
CC5
switch by using the V
CC5_EN
control as your main V
CC
switch.
June 2004
10
M9999-062204