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LTC4555EUD

Description
IC sim pwr sup/lvl trnsltr 16qfn
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size94KB,8 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LTC4555EUD Overview

IC sim pwr sup/lvl trnsltr 16qfn

LTC4555EUD Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeQFN
package instructionVQCCN,
Contacts16
Manufacturer packaging codeUD
Reach Compliance Codenot_compliant
ECCN codeEAR99
Interface integrated circuit typeINTERFACE CIRCUIT
JESD-30 codeS-PQCC-N16
JESD-609 codee0
length3 mm
Humidity sensitivity level1
Number of functions1
Number of terminals16
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeVQCCN
Package shapeSQUARE
Package formCHIP CARRIER, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)235
Certification statusNot Qualified
Maximum seat height0.8 mm
Maximum supply voltage4.4 V
Minimum supply voltage1.2 V
Nominal supply voltage1.8 V
Supply voltage 1-max6 V
Mains voltage 1-minute3 V
Supply voltage1-Nom3.3 V
surface mountYES
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationQUAD
Maximum time at peak reflow temperature20
width3 mm
LTC4555
SIM Power Supply
and Level Translator
FEATURES
n
n
n
n
n
n
n
n
n
DESCRIPTION
The LTC
®
4555 provides power conversion and signal
level shifting needed for low voltage 2.5G and 3G cellular
telephones to interface with 1.8V or 3V subscriber identity
modules (SIMs). The part meets all type approval require-
ments for 1.8V and 3V SIMs and smart cards. The part
contains an LDO linear regulator to supply SIM power at
either 1.8V or 3V from a 3V to 6V input. The output volt-
age is selected with a single pin and up to 50mA of load
current can be supplied.
Internal level translators allow controllers operating with
supplies as low as 1.2V to interface with 1.8V or 3V smart
cards. Battery life is maximized by 20μA operating current
and <1μA shutdown current. Board area is minimized by
the 3mm
×
3mm leadless QFN package.
L,
LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
SIM Power Supply: 1.8V/3V at 50mA
Input Voltage Range: 3V to 6V
Controller Voltage Range: 1.2V to 4.4V
14kV ESD On All SIM Contact Pins
Meets All ETSI, IMT-2000 and ISO7816 SIM/Smart
Card Interface Requirements
Level Translators to 1.8V or 3V
20μA Operating Current
Logic-Controlled Shutdown (I
SD
< 1μA)
Available in a Low Profile, 16-Pin (3mm
×
3mm)
QFN Package
APPLICATIONS
n
n
SIM Interface in 3G Cellular Telephones
Smart Card Readers
TYPICAL APPLICATION
Typical SIM Interface
(1.2V TO 4.4V)
V
CC
0.1μF
DV
CC
SHDN
CONTROLLER
V
SEL
LTC4555
R
IN
C
IN
DATA
GND
GND
4555 TA01
V
BAT
(3V TO 6V)
0.1μF
V
BAT
V
CC
1μF
RST
CLK
I/0
RST
CLK
I/0
V
CC
SIM/
SMART CARD
INTERFACE
4555fb
1

LTC4555EUD Related Products

LTC4555EUD LTC4555EUD#TR
Description IC sim pwr sup/lvl trnsltr 16qfn IC sim pwr sup/lvl trnsltr 16qfn
Brand Name Linear Technology Linear Technology
Is it Rohs certified? incompatible incompatible
Maker Linear ( ADI ) Linear ( ADI )
Parts packaging code QFN QFN
package instruction VQCCN, VQCCN,
Contacts 16 16
Manufacturer packaging code UD UD
Reach Compliance Code not_compliant not_compliant
ECCN code EAR99 EAR99
Interface integrated circuit type INTERFACE CIRCUIT INTERFACE CIRCUIT
JESD-30 code S-PQCC-N16 S-PQCC-N16
JESD-609 code e0 e0
length 3 mm 3 mm
Humidity sensitivity level 1 1
Number of functions 1 1
Number of terminals 16 16
Maximum operating temperature 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code VQCCN VQCCN
Package shape SQUARE SQUARE
Package form CHIP CARRIER, VERY THIN PROFILE CHIP CARRIER, VERY THIN PROFILE
Peak Reflow Temperature (Celsius) 235 235
Certification status Not Qualified Not Qualified
Maximum seat height 0.8 mm 0.8 mm
Maximum supply voltage 4.4 V 4.4 V
Minimum supply voltage 1.2 V 1.2 V
Nominal supply voltage 1.8 V 1.8 V
Supply voltage 1-max 6 V 6 V
Mains voltage 1-minute 3 V 3 V
Supply voltage1-Nom 3.3 V 3.3 V
surface mount YES YES
Temperature level INDUSTRIAL INDUSTRIAL
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form NO LEAD NO LEAD
Terminal pitch 0.5 mm 0.5 mm
Terminal location QUAD QUAD
Maximum time at peak reflow temperature 20 20
width 3 mm 3 mm
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