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LTC1470CS8#TRPBF

P1-P3P4-P6P7-P9P10-P12
1
LTC1470/LTC1471
14701fa
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
Single and Dual
PCMCIA Protected
3.3V/5V V
CC
Switches
■
Single 3.3V/5V Switch in 8-Pin SO Package
■
Dual 3.3V/5V Switch in 16-Pin SO Package
■
Built-In Current Limit and Thermal Shutdown
■
Built-In Charge Pumps (No 12V Required)
■
Extremely Low R
DS(ON)
MOSFET Switches
■
Output Current Capability: 1A
■
Inrush Current Limited (Drives 150µF Loads)
■
Quiescent Current in Standby: 1µA
■
No Parasitic Body Diodes
■
Built-In XOR Function Eliminates “Glue” Logic
■
Break-Before-Make Switching
■
Controlled Rise and Fall Times
■
Available in 8-Pin and 16-Pin SO Packages
LTC1471
AEN1
AEN0
BEN1
BEN0
5V
IN
3V
IN
BOUT
AOUT
PCMCIA
CARD SLOT
CONTROLLER
GND
0.1µF
5V
3.3V
0.1µF
1470/71 TA01
PCMCIA
CARD SLOT
+
V
CC
V
CC
1µF
10k
(Hi-Z/3.3V/5V)
PCMCIA
CARD SLOT
+
V
CC
V
CC
1µF
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.
Dual Slot PCMCIA 3.3V/5V V
CC
Switch Linear Technology PCMCIA Product Family
DEVICE DESCRIPTION PACKAGE
LT
®
1312 Single PCMCIA VPP Driver/Regulator 8-Pin SO
LT1313 Dual PCMCIA VPP Driver/Regulator 16-Pin SO*
LTC1314 Single PCMCIA Switch Matrix 14-Pin SO
LTC1315 Dual PCMCIA Switch Matrix 24-Pin SSOP
LTC1470 Single Protected V
CC
3.3V/5V Switch Matrix 8-Pin SO
LTC1471 Dual Protected V
CC
3.3V/5V Switch Matrix 16-Pin SO*
LTC1472 Protected V
CC
and VPP Switch Matrix 16-Pin SO*
*Narrow Body
■
Set Top Box/Open Cable
■
Notebook Computers
■
Palmtop Computers
■
Pen-Based Computers
■
Handi-Terminals
■
3.3V/5V Power Supply Switch
, LTC and LT are registered trademarks of Linear Technology Corporation.
SafeSlot is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
2
LTC1470/LTC1471
14701fa
ABSOLUTE MAXIMUM RATINGS
W
WW
U
3.3V Supply Voltage (3V
IN
) (Note 2)........................ 7V
5V Supply Voltage (5V
IN
) (Note 2)............................ 7V
Enable Input Voltage ..................... 5V
IN
to (GND – 0.3V)
Output Voltage (OFF) (Note 2) ......... 7V to (GND – 0.3V)
Output Short-Circuit Duration .......................... Indefinite
Operating Temperature
LTC1470C .............................................. 0°C to 70°C
LTC1470E (Note 7) ............................. –40°C to 85°C
Junction Temperature.......................................... 100°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER INFORMATION
W
U
U
ORDER PART
NUMBER
LTC1471CS
1470
1470E
S8 PART MARKING
ORDER PART
NUMBER
T
JMAX
= 100°C, θ
JA
= 100°C/W
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
3V
IN
3.3V Supply Voltage Range 2.70 3.60 V
5V
IN
5V Supply Voltage Range 4.75 5.25 V
I
3VIN
3.3V Supply Current Program to Hi-Z (Note 4) ● 0.01 10 µA
Program to 3.3V, No Load (Note 4)
● 40 80 µA
Program to 5V, No Load (Note 4)
● 0.01 10 µA
I
5VIN
5V Supply Current Program to Hi-Z (Note 4) ● 0.01 10 µA
Program to 3.3V (Note 4)
● 100 160 µA
Program to 5V (Note 4)
● 140 200 µA
R
ON
3.3V Switch ON Resistance Program to 3.3V, I
OUT
= 500mA 0.12 0.16 Ω
5V Switch ON Resistance Program to 5V, I
OUT
= 500mA 0.14 0.18 Ω
I
LKG
Output Leakage Current OFF Program to Hi-Z, 0V ≤ V
OUT
≤ 5V (Note 4) ● ±10 µA
I
LIM3V
3.3V Current Limit Program to 3.3V, V
OUT
= 0V (Note 5) 1 A
I
LIM5V
5V Current Limit Program to 5V, V
OUT
= 0V (Note 5) 1 A
V
ENH
Enable Input High Voltage ● 2.0 V
V
ENL
Enable Input Low Voltage ● 0.8 V
I
EN
Enable Input Current 0V ≤ V
EN
≤ 5V ±1 µA
ELECTRICAL CHARACTERISTICS
LTC1470CS8
LTC1470ES8
T
JMAX
= 100°C, θ
JA
= 150°C/W
1
2
3
4
8
7
6
5
TOP VIEW
OUT
3V
IN
3V
IN
GND
OUT
5V
IN
EN1
EN0
S8 PACKAGE
8-LEAD PLASTIC SO
TOP VIEW
S PACKAGE
16-LEAD PLASTIC SO
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
AOUT
A5V
IN
AEN1
AEN0
GND
B3V
IN
B3V
IN
BOUT
AOUT
A3V
IN
A3V
IN
GND
BEN0
BEN1
B5V
IN
BOUT
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. 3V
IN
= 3.3V, 5V
IN
= 5V (Note 3), unless otherwise noted.
(Note 1)
Consult LTC Marketing for parts specified with wider operating temperature ranges.
3
LTC1470/LTC1471
14701fa
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
t
0
to
t
3
Delay and Rise Time (Note 6) Transition from 0V to 3.3V, R
OUT
= 100Ω, C
OUT
= 1µF 0.2 0.32 1.0 ms
t
3
to
t
5
Delay and Rise Time (Note 6) Transition from 3.3V to 5V, R
OUT
= 100Ω, C
OUT
= 1µF 0.2 0.52 1.0 ms
t
0
to
t
5
Delay and Rise Time (Note 6) Transition from 0V to 5V, R
OUT
= 100Ω, C
OUT
= 1µF 0.2 0.38 1.0 ms
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: For the LTC1470, the two output pins (1, 8) must be connected
together and the two 3.3V supply input pins (6 , 7) must be connected
together. For the LTC1471, the two AOUT pins (1, 16) must be connected
together, the two BOUT pins (8, 9) must be connected together, the two
A3V
IN
supply input pins (14, 15) must be connected together, the two
B3V
IN
supply pins (6, 7) must be connected together and the two GND
pins (5, 13) must be connected together.
Note 3: Power for the input logic and charge pump circuitry is derived
from the 5V
IN
supply pin(s) which must be continuously powered.
Note 4: Measured current is per channel with the other channel
programmed off for the LTC1471.
Note 5: The output is protected with foldback current limit which reduces
the short-circuit (0V) currents below peak permissible current levels at
higher output voltages.
Note 6: To 90% of final value.
Note 7: The LTC1470 is guaranteed to meet performance specifications
from 0°C to 70°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
3V
IN
= 3.3V, 5V
IN
= 5V (Note 3), T
A
= 25°C, unless otherwise noted.
(LTC1470 or 1/2 LTC1471)
3V
IN
SUPPLY VOLTAGE (V)
0
0
3V
IN
SUPPLY CURRENT (µA)
20
40
60
80
12
3
4
1470/71 G05
100
120
T
A
= 25°C
PROGRAMMED TO
3.3V, NO LOAD
3V
IN
SUPPLY VOLTAGE (V)
0
–1
3V
IN
SUPPLY CURRENT (µA)
0
1
2
3
12
3
4
1470/71 G04
4
5
T
A
= 25°C
PROGRAMMED TO OFF
3V
IN
Supply Current (3.3V ON)3V
IN
Supply Current (OFF)
5V
IN
SUPPLY VOLTAGE (V)
0
–1
5V
IN
SUPPLY CURRENT (µA)
0
1
2
3
5
1
234
1470/71 G01
56
4
T
A
= 25°C
PROGRAMMED TO OFF
5V
IN
Supply Current (OFF)
JUNCTION TEMPERATURE (°C)
0
0
3.3V SWITCH RESISTANCE (Ω)
0.05
0.10
0.15
0.20
0.25
0.30
25 50 75 100
1470/71 G07
125
PROGRAMMED
TO 3.3V
3.3V Switch Resistance
5V
IN
SUPPLY VOLTAGE (V)
0
0
5V
IN
SUPPLY CURRENT (µA)
50
100
150
200
300
1
234
1470/71 G03
56
250
T
A
= 25°C
PROGRAMMED
TO 3.3V, NO LOAD
5V
IN
Supply Current (3.3V ON)
5V
IN
Supply Current (5V ON)
5V
IN
SUPPLY VOLTAGE (V)
0
0
5V
IN
SUPPLY CURRENT (µA)
50
100
150
200
300
1
234
1470/71 G02
56
250
T
A
= 25°C
PROGRAMMED
TO 5V, NO LOAD
P1-P3P4-P6P7-P9P10-P12

LTC1470CS8#TRPBF

Mfr. #:
Buy LTC1470CS8#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switch ICs - Various Single PCMCIA Protected Vcc Sw
Lifecycle:
New from this manufacturer.
Delivery:
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