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參數(shù)資料
| 型號： | LTC1472 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Dual General Purpose LinCMOS(TM) Differential Comparator 8-PDIP -40 to 85 |
| 中文描述： | 受保護(hù)的PCMCIA虛擬通道連接和VPP開關(guān)矩陣 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 300K |
| 代理商： | LTC1472 |
1
LTC1472
Protected PCMCIA V
CC
and
VPP Switching Matrix
The LTC
1472 switching matrix routes power to both the
V
CC
and VPP power supply pins of the PCMCIA compatible
card socket. The V
CC
output of the LTC1472 is switched
between three operating states: OFF, 3.3V, and 5V. The
VPP output is switched between four operating states: 0V,
V
CC
, 12V, and Hi-Z. The output voltages are selected by
two sets of digital inputs which are compatible with
industry standard PC Card controllers (see Truth Tables).
The V
CC
output of the LTC1472 can supply up to 1A of
current and the VPP output up to 120mA. Both switches
have built-in SafeSlot
TM
current limiting and thermal shut-
down to protect the card, socket and power supply against
accidental short-circuit conditions.
The LTC1472 is designed to conserve power by automati-
cally dropping to 1
μ
A standby current when the two
outputs are switched OFF. A shutdown pin is provided
which holds the external 12V regulator in standby mode
except when required for VPP power.
The LTC1472 is available in 16-pin SO.
DESCRIPTIO
N
U
FEATURES
I
Both V
CC
and VPP Switching in a Single Package
I
Built-In Current Limit and Thermal Shutdown
I
16-Pin (Narrow) SOIC Package
I
Inrush Current Limited (Drives 150
μ
F Loads)
I
Continuous 12V Power Not Required
I
Extremely Low R
DS(ON)
NMOS Switches
I
Guaranteed 1A V
CC
Current and 120mA VPP Current
I
1
μ
A Quiescent Current in Standby
I
No External Components Required
I
Compatible with Industry Standard Controllers
I
Break-Before-Make Switching
I
Controlled Rise and Fall Times
APPLICATIO
S
U
I
Notebook Computers
I
Palmtop Computers
I
Pen-Based Computers
I
Handi-Terminals
I
Bar-Code Readers
TYPICAL APPLICATIO
N
U
3V
IN
VPP
IN
SHDN
5V
IN
V
DD
VPP EN0
VPP EN1
V
CC
EN0
V
CC
EN1
VPP
OUT
V
CC(IN)
V
CC(OUT)
LTC1472
GND
12V
3.3V
5V
OV, V
CC
, 12V, Hi-Z
VPP1
VPP2
PCMCIA
CARD SLOT
V
CC
V
CC
PCMCIA
CARD SLOT
CONTROLLER
OFF, 3.3V, 5V
LTC1472-TA01
1
μ
F
0.1
μ
F
0.1
μ
F
10k
0.1
μ
F
0.1
μ
F
TO 12V REGULATOR
+
DEVICE
LT
1312
LT1313
LTC1314
LTC1315
LTC1470
LTC1471
LTC1472
*Narrow Body
DESCRIPTION
Single PCMCIA VPP Driver/Regulator
Dual PCMCIA VPP Driver/Regulator
Single PCMCIA Switch Matrix
Dual PCMCIA Switch Matrix
Protected V
CC
5V/3.3V Switch Matrix
Dual Protected V
CC
5V/3.3V Switch Matrix
Protected V
CC
and VPP Switch Matrix
PACKAGE
8-Pin SO
16-Pin SO*
14-Pin SO
24-Pin SSOP
8-Pin SO
16-Pin SO*
16-Pin SO*
Protected PCMCIA V
CC
and VPP Card Driver
Linear Technology PCMCIA Product Family
, LTC and LT are registered trademarks of Linear Technology Corporation.
SafeSlot is a trademark of Linear Technology Corporation.
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