ltc1555l-1.8 Linear Technology Corporation, ltc1555l-1.8 Datasheet - Page 4

• Manufacturer Part Number: ltc1555l-1.8
• Description: Sim Power Supply And Level Translator
• Manufacturer: Linear Technology Corporation

LTC1555L-1.8
PIN
4
CIN (Pin 1): Clock Input Pin from Controller.
RIN (Pin 2): Reset Input Pin from Controller.
DATA (Pin 3): Controller Side Data Input/Output Pin. Can
be used for single pin bidirectional data transfer between
the controller and the SIM card as long as the controller
data pin is open drain. The controller output must be able
to sink 1mA max when driving the DATA pin low due to the
internal pull-up resistors on the DATA and I/O pins. If the
controller data output is not open drain, then the DDRV pin
should be used for sending data to the SIM card and the
DATA pin used for receiving data from the SIM card.
TYPICAL PERFOR A CE CHARACTERISTICS
6.0
5.5
5.0
4.5
4.0
U
50
40
30
20
10
2
2
I
V
I
T
VIN
V
I
VCC
FUNCTIONS
CC
A
VCC
CC
= 25 C
vs V
= 0mA
vs V
= 5V
= 10mA
U
3
IN
IN
3
V
CC
T
A
= 5V
= 25 C
V
V
T
IN
IN
A
4
4
V
= 85 C
U
(V)
(V)
CC
= 3V
V
CC
T
= 1.8V
W
5
A
5
= –40 C
1555L • G01
1555L • G04
U
6
6
3.6
3.0
2.7
2.4
3.3
50
40
30
20
10
–40
2
I
V
V
I
VIN
VCC
V
I
CC
IN
VCC
CC
= 3.6V
= 0mA
vs Temperature
vs V
= 3V
= 10mA
0
3
IN
TEMPERATURE ( C)
V
T
IN
A
40
DDRV (Pin 4): Optional Data Input Pin for Sending Data to
the SIM Card. When not needed, the DDRV pin should
either be left floating or tied to DV
current source will pull the DDRV pin up to DV
floating).
DV
Input/Output Pins (typically 3V). May be between 1.425V
and 4.4V. The DV
shutdown for further reduction in battery current. When
DV
the LTC1555L-1.8 goes into shutdown mode regardless
of the signals on the M0-M2 pins.
4
= 25 C
(V)
T
A
CC
CC
= 85 C
drops below 1.2V, the charge pump is disabled and
(Pin 5): Supply Voltage for Controller Side Digital
T
80
5
A
V
V
V
= –40 C
CC
CC
CC
1555L • G02
1555L • G05
= 1.8V
= 5V
= 3V
120
6
CC
supply may be powered-down in
2.2
2.0
1.8
1.6
1.4
20
15
10
5
0
1
2
I
V
DVCC
F
CC
V
I
CLK
VCC
CC
vs V
= 1MHz
= 1.8V
= 10mA
vs V
2
3
IN
T
A
DVCC
= 85 C
CC
V
T
DVCC
A
V
IN
(an internal 1 A
= 85 C
3
4
(V)
T
T
(V)
A
T
A
A
= 25 C
= 25 C
= –40 C
T
A
= –40 C
4
5
CC
1555L • G03
1555L • G06
if left
5
6