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參數(shù)資料
| 型號(hào)： | LT1470 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Single and Dual PCMCIA Protected 3.3V/5V VCC Switches |
| 中文描述： | 單路和雙路的PCMCIA保護(hù)3.3V/5V的虛擬通道連接開關(guān) |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大?。?/td> | 229K |
| 代理商： | LT1470 |
1
LTC1470/LTC1471
Single and Dual
PCMCIA Protected
3.3V/5V V
CC
Switches
DESCRIPTIO
N
U
FEATURES
I
Single 3.3V/5V Switch in 8-Pin SO Package
I
Dual 3.3V/5V Switch in 16-Pin SO Package
I
Built-In Current Limit and Thermal Shutdown
I
Built-In Charge Pumps (No 12V Required)
I
Extremely Low R
DS(ON)
MOSFET Switches
I
Output Current Capability: 1A
I
Inrush Current Limited (Drives 150
μ
F Loads)
I
Quiescent Current in Standby: 1
μ
A
I
No Parasitic Body Diodes
I
Built-In XOR Function Eliminates “Glue” Logic
I
Break-Before-Make Switching
I
Controlled Rise and Fall Times
TYPICAL APPLICATIO
N
U
LTC1471
AEN1
AEN0
BEN1
BEN0
5V
IN
3V
IN
BOUT
AOUT
PCMCIA
CARD SLOT
CONTROLLER
GND
0.1
μ
F
5V
3.3V
0.1
μ
F
1470/71 TA01
PCMCIA
CARD SLOT
+
V
CC
V
CC
1
μ
F
10k
(Hi-Z/3.3V/5V)
PCMCIA
CARD SLOT
+
V
CC
V
CC
1
μ
F
10k
(Hi-Z/3.3V/5V)
The LTC
1470 switches the V
CC
pins of a Personal Com-
puter Memory Card International Association (PCMCIA)
card slot between three operating states: OFF, 3.3V and
5V. Two low R
DS(ON)
N-channel power MOSFETs are
driven by a built-in charge pump which generates a
voltage higher than the supply voltage to fully enhance
each switch when selected by the input control logic.
The LTC1470 inputs are compatible with industry stan-
dard PCMCIA controllers. A built-in XOR ensures that both
switches are never on at the same time. This function also
makes the LTC1470 compatible with both active-low and
active-high controllers (see Applications Information sec-
tion). The switch rise times are controlled to eliminate
power supply glitching.
The LTC1470 features built-in SafeSlot
TM
current limit and
thermal shutdown. The output is limited to 1A during short
circuit to ground but 2A of peak operating current is
allowed.
The LTC1471 is a dual version of the LTC1470 and is
available in a 16-pin SO package.
SafeSlot is a trademark of Linear Technology Corporation.
Dual Slot PCMCIA 3.3V/5V V
CC
Switch
Linear Technology PCMCIA Product Family
, LTC and LT are registered trademarks of Linear Technology Corporation.
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
Single Protected V
CC
3.3V/5V Switch Matrix
Dual Protected V
CC
3.3V/5V 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*
APPLICATIO
S
U
I
Notebook Computers
I
Palmtop Computers
I
Pen-Based Computers
I
Handi-Terminals
I
PC Card Reader/Writers
I
3.3V/5V Power Supply Switch
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