PCMCIA Host and Card
Power Solutions – InfoCard 17
Cards
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PCMCIA Power Switching Solutions
VCC: 3.3V or 5V
VPP: 0V, VCC, 12V, High-Z
On-Card DC/DC Conversion Solutions
(See pages 3 and 4)
PC Card Host Power Interface
PCMCIA
Linear Technology PCMCIA Product Family
DEVICE
DESCRIPTION
PACKAGE
LT 1312
Single PCMCIA VPP Driver/Regulator
8-Pin SOIC
LT1313
Dual PCMCIA VPP Driver/Regulator
16-Pin SOIC*
®
LTC®1314 Single PCMCIA Switch Matrix
Dual PCMCIA Switch Matrix
Protected VCC 5V/3.3V Switch Matrix
8-Pin SOIC
LTC1471
Dual Protected VCC 5V/3.3V Switch Matrix
16-Pin SOIC*
LTC1472
Protected VCC and VPP Switch Matrix
16-Pin SOIC*
8-Lead SOIC
24-Pin SSOP
LTC1470
16-Lead SOIC
(Narrow Body)
14-Pin SOIC
LTC1315
MEMBER COMPANY
14-Lead SOIC
24-Lead SSOP
*Narrow Body
(Packages Enlarged for Clarity)
LTC1472 Protected PCMCIA VCC and VPP Switching Matrix
s
s
s
s
s
s
s
s
s
s
s
Both VCC and VPP Switching in a
Single Package
TOP VIEW
Built-In SafeSlotTM Current Limit and
16
VCC(OUT) 1
Thermal Shutdown
15
5VIN 2
16-Pin (Narrow) SOIC Package
14
VCC EN1 3
Inrush Current Limited (Drives 150µF
13
VCC EN0 4
LTC1472CS
Loads)
12
VPPIN 5
Continuous 12V Power Not Required
11
SHDN 6
Extremely Low RDS(ON) NMOS
10
VPP EN0 7
9
VPP EN1 8
Switches
Guaranteed 1A VCC Current and 120mA
S PACKAGE
16-LEAD PLASTIC SOIC
VPP Current
1µA Quiescent Current in Standby
No External Components Required
Compatible with Industry Standard Controllers
Break-Before-Make Switching
Controlled Rise and Fall Times
Compatible with Cirrus Logic CL-PD6720, Intel 365-type and
Other PCMCIA Host Adaptor Chips
3.3V OR 5V
3.3V
(12V)
VCC(OUT)
3VIN
5V
3VIN
VPPIN
STEP-UP
REGULATOR
(LT1301)
VOUT SHDN
SHDN
5VIN
3VIN
VPPOUT
(OV,VCC, 12V, Hi-Z)
VPP2
LTC1472
GND
VCC(IN)
VDD
VPPOUT
VPP1
VPP EN0
GND
VDD
PCMCIA
CARD SLOT
CONTROLLER
PCMCIA
CARD SLOT
VPP EN1
VCC(IN)
VCC EN0
VCC
VCC(OUT)
(OFF, 3.3V, 5V)
VCC
VCC EN1
GND
LTC1472-TA01
VCC Switch Truth Table
VPP Switch Truth Table
s
, LTC and LT are registered trademarks of Linear Technology Corporation.
SafeSlot is a trademark of Linear Technology Corporation.
VCC EN1
VCC(OUT)
VPP ENO
VPP EN1
0
0
Off
0
0
0V
1
0
5V
0
1
VCC(IN)
0
1
3.3V
1
0
VPPIN
1
s
VCC ENO
VPP OUT
1
Off
1
1
Hi-Z
Rev B 0295
Linear Technology Corporation • 1630 McCarthy Blvd. • Milpitas, CA 95035-7417 • (408) 432-1900 • www.linear-tech.com • Literature Only: 1-800-4-LINEAR
