Datasheet

16
LTC1755/LTC1756
 LINEAR TECHNOLOGY CORPORATION 1999
sn17556a 17556fs LT/LCG 0800 4K • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear-tech.com
PART NUMBER DESCRIPTION COMMENTS
LTC1514/LTC1515 Micropower Step-Up/Step-Down Inductorless Regulated Output Up to 50mA, V
IN
from 2V to 10V, SO-8 Package
DC/DC Converters
LTC1516 Micropower Regulated 5V Charge Pump 5V/50mA Output from 2V to 5V Input, S0-8 Package
LTC1555/LTC1556 SIM Power Supply and Level Translator Step-Up/Step-Down Charge Pump + Generates 3V or 5V
LTC1754-5 5V Charge Pump with Shutdown in SOT-23 V
IN
from 2.7V to 5.5V, 50mA Output with V
IN
≥ 3V
LTC1986 3V/5V SIM Power Supply in SOT-23 V
IN
from 2.6V to 4.4V, 3V/5V Output at 10mA
RELATED PARTS
TYPICAL APPLICATIO
U
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LTC1756
PRES
PWR
GND
V
IN
V
CC
I/O
RST
CLK
C2
10µF
N.O.
C3
10µF
V
CC
I/O
RST
CLK
C1
0.68µF
GND
SMART CARD
17556 TA02
SMART CARD
PRESENT SWITCH
µCONTROLLER
3.3V
5V/3V
CARD
READY
C
–
C
+
DATA
RIN
CIN
Asynchronous Smart Card Interface