LTC1555 Datasheet, PDF (12/12 Pages) Linear Technology – SIM Power Supply and Level Translator

LTC1555/LTC1556
TYPICAL APPLICATION
3V GSM
CONTROLLER
V_CC
SIM Interface with Auxilary Power
4.3V
50mA
+
AUXILIARY LDO/POWER SWITCH
10µF ^{(FREQUENCY SYNTHESIZER)}
3V
LTC1556
V_IN
2.7V TO 10V
SIM
1
CIN
2
RIN
3
DATA
4
DDRV
5
EN
6
FB
7
DV_CC
8
SS
9
M1
10
M0
20
CLK
19
RST
18
I/O
17
LDO
16
V_CC
15
V_IN
C1^{+ 14}
C1^{– 13}
12
GND
11
GND
CLK
RST
I/O
0.1µF
+
10µF
10µF
V_CC
5V ± 5%
I_VCC ≤ 10mA
GND
1555/56 TA02
RELATED PARTS
PART NUMBER
LTC1514-3.3/LTC1514-5
LTC1515 Series
LTC1516
LTC1517-5
LTC1522
LTC1550-4.1
LTC660
DESCRIPTION
COMMENTS
Regulated Step-Up/Step-Down Charge Pumps with Low Bat Comparator 3.3V and 5V Output Versions
Regulated Step-Up/Step-Down Charge Pumps with Reset Output
Adjustable, 3V/5V, 3.3V/5V Versions
Micropower, Regulated 5V Charge Pump DC/DC Converter
Micropower, Regulated 5V Charge Pump DC/DC Converter
I_OUT = 20mA (V_IN ≥ 2V), I_OUT = 50mA (V_IN ≥ 3V)
LTC1522 Without Shutdown and
Packaged in SOT-23
Micropower, Regulated 5V Charge Pump DC/DC Converter
Low Noise, Charge Pump Voltage Inverter
100mA Charge Pump DC/DC Converter
I_OUT = 20mA (V_IN ≥ 3V), I_Q = 6µA
1mV_P-P Ripple at 900kHz
5V to – 5V at 100mA
12 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417 ^q [phone]
FAX: [phone]^q TELEX: 499-3977 ^q www.linear-tech.com
15556f LT/TP 0398 4K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1997