LTC4557 Dual SIM/Smart Card Power Supply and Interface FEATURES DESCRIPTIO n Power Management and Signal Level Translators The LTC 4557 provides power conversion and signal level for Two SIM Cards or Smart Cards translation needed for 2.5G and 3G cellular telephones to n Independent 1.8V/3V V Control for Both Cards interface with 1.8V or 3V subscriber identity modules CC n Automatic Level Translation (SIMs). The part meets all requirements for 1.8V and 3V n ISO7816, ETSI and EMV Compatible SIMs. The part contains LDO regulators to power 1.8V or n Dynamic Pull-Ups Deliver Fast Signal Rise Times* 3V SIM cards from a 2.7V to 5.5V input. The output n Built-In Fault Protection Circuitry voltages can be set using the two voltage selection pins n Automatic Activation/Deactivation Sequencing and up to 50mA of load current can be supplied. Circuitry Internal level translators allow controllers operating with n Low Operating/Shutdown Current supplies as low as 1.2V to interface with 1.8V or 3V smart n >10kV ESD on SIM Card Pins cards. Battery life is maximized by a low operating current n Compatible with EMV Fault Tolerance Requirements of less than 100m A and a shutdown current of less than n Available in 16-Lead (3mm 3mm) QFN Package 1m A. Board area is minimized by the low profile 3mm U 3mm 0.75mm leadless QFN package. APPLICATIO S , LTC and LT are registered trademarks of Linear Technology Corporation. n GSM and 3G Cellular Phones *U.S. Patent No. 6,356,140 n Wireless P.O.S. Terminals n Multiple SAM Card Interface TYPICAL APPLICATIO DV V CC BATT 1.2V TO 4.4V 3V TO 6V DV CC 0.1F 0.1F Deactivation Sequence DV V CC BATT C7 I/O CLKIN I/OA C2 RSTX RSTIN RSTA RST 1.8V/3V 5V/DIV C3 SIM DATA CLKA CLK CARD C1 CLKX V V CCA CC 5V/DIV GND CONTROLLER LTC4557 1F C5 GND I/OX 5V/DIV 1F C1 V CCX V V CCB CC 2V/DIV C3 ENABLE CLKB CLK 1.8V/3V 4557 G07 C = 1F 10s/DIV C2 VCCX SMART M0 RSTB RST CARD C7 M1 I/OB I/O GND C5 4557 TA01 4557f 1 U ULTC4557 UUW ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1) TOP VIEW ORDER PART V , DV , DATA, RSTIN, CLKIN, BATT CC NUMBER ENABLE, M0, M1 to GND............................ 0.3V to 6V 16 15 14 13 I/OA, CLKA, RSTA ........................ 0.3V to V + 0.3V LTC4557EUD CCA V 1 12 M0 CCB I/OB, CLKB, RSTB ........................ 0.3V to V + 0.3V CCB DV 2 11 M1 CC 17 I (Note 4) ...................................................... 80mA CCA,B V 3 10 CLKIN BATT V Short-Circuit Duration ......................... Indefinite CCA,B V 4 9 RSTIN CCA Operating Temperature Range (Note 3) .. 40 C to 85 C 5 6 7 8 UD PART MARKING Storage Temperature Range ................... 65 C to 125 LAHP UD PACKAGE 16-LEAD (3mm 3mm) PLASTIC QFN T = 125 C, q = 68 C/W, q = 42 C/W JMAX JA JC EXPOSED PAD (PIN 17) IS GND (MUST BE SOLDERED TO PCB) Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T = 25 C. V = 3.3V, DV = 1.8V, unless otherwise specified. A BATT CC SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Input Power Supply V Operating Voltage l 2.7 5.5 V BATT I Operating Current V = 3V, V = 0V, I = I = 0m A l 65 100 m A VBATT CCA CCB CCA CCB V = 1.8V, V = 0V, I = I = 0m A l 65 100 m A CCA CCB CCA CCB DV Operating Voltage l 1.2 5.5 V CC I Operating Current l 610 m A DVCC I Shutdown Current l 0.1 1 m A DVCC I Shutdown Current l 0.4 2.5 m A VBATT DV = 0V l 0.1 1.0 m A CC SIM Card Supplies V Output Voltage 3V Mode, 0mA < I < 50mA l 2.75 3.0 3.25 V CCA,B CCA,B 1.8V Mode, 0mA < I < 3OmA l 1.65 1.8 1.95 V CCA,B Channel Turn-On Time I = 0mA, ENABLE to I l 1.3 2.5 ms CCA,B OA/B CLKA, CLKB V Low Level Output Voltage Sink Current = 200m A (Note 2) l 0.2 V OL V High Level Output Voltage Source Current = 200m A (Note 2) l V V OH CCA,B 0.2 Rise, Fall Time Loaded with 33pF (10% to 90%) (Note 2) l 16 ns CLKA, CLKB Frequency (Note 2) l 10 MHz RSTA, RSTB V Low Level Output Voltage Sink Current = 200m A (Note 2) l 0.2 V OL V High Level Output Voltage Source Current = 200m A (Note 2) l V V OH CCA,B 0.2 Rise, Fall Time Loaded with 33pF (10% to 90%) (Note 2) l 100 ns 4557f 2 CLKA CLKB RSTA RSTB I/OA I/OB DATA ENABLE U WWW