LTC4558 Linear Integrated Systems, LTC4558 Datasheet
LTC4558
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LTC4558 Summary of contents
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... LTC4558 C5 4558 TA01 Dual SIM/Smart Card ® 4558 provides the power conversion and signal , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Deactivation Sequence RSTX 5V/DIV CLKX 5V/DIV I/OX 5V/DIV V CCX 2V/DIV C = 1µF 10µs/DIV VCCX LTC4558 4558 TA02 4558f 1 ...
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... UD PACKAGE 20-LEAD (3mm × 3mm) PLASTIC QFN T = 125°C, θ = 68°C/W, θ = 4.2°C/W JMAX JA JC EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB UD PART MARKING LTC4558EUD LCSH http://www.linear.com/leadfree/ = 1.8V 1µF, unless otherwise specifi ed MIN TYP MAX ● ...
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... I/OA,B CCA,B Loaded with 50pF (10% to 90%) Note 3: The LTC4558E is guaranteed to meet performance specifi cations from 0°C to 85°C. Specifi cations over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. Note 4: Based on long-term current density limitations. ...
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... LTC4558 TYPICAL PERFORMANCE CHARACTERISTICS No Load Supply Current vs V 100 CCA 90 85 DROPOUT CCX 70 www.DataSheet4U.com 65 V CCX 2.7 3.1 3.5 3.9 4.3 V SUPPLY VOLTAGE (V) BATT V BATT vs Supply Voltage 4.0 V DVCC 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 2.7 3.1 4 I/OX Short-Circuit Current vs Temperature BATT 7 5.5V = 25°C DVCC BATT 0µA ...
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... TYPICAL PERFORMANCE CHARACTERISTICS www.DataSheet4U.com T = 25°C unless otherwise noted. A Data – I/O Channel 40pF L I/0X 1V/DIV DATA 1V/DIV 4557 G06 200ns/DIV Deactivation Sequence 1µF VCCX RSTX 5V/DIV CLKX 5V/DIV I/OX 5V/DIV V CCX 2V/DIV 4557 G07 20µs/DIV LTC4558 4558f 5 ...
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... PIN FUNCTIONS DV (Pin 2): Power. Reference voltage for the control CC logic. V (Pin 3): Power. Supply voltage for the analog sec- BATT tions of the LTC4558 (Pins 4, 1): Card Socket. The V CCA CCB should be connected to the V sockets. The activation of the V by ENABLEA and ENABLEB. They can be set to 1. www ...
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... BLOCK DIAGRAM V 4 CCA www.DataSheet4U.com I/OA 7 RSTA 6 CLKA 5 CLKRUNA 14 DATA 8 RSTIN 9 CLKIN BATT 2 3 LDOA LDOB CONTROL LOGIC GND CSEL VSELA ENABLEA VSELB LTC4558 1 V CCB 18 I/OB 19 RSTB 20 CLKB 15 CLKRUNB ENABLEB 4558f 7 ...
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... LTC4558 OPERATION The LTC4558 features two independent SIM/Smart Card channels. Only one of these channels may be open for communication at a time however both channels can be enabled and made ready for communication using the ENABLEA and ENABLEB pins. This allows faster transi- tion from one channel to the other. Each channel is able to produce two voltage levels, 1 ...
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... After a fault is detected by the internal fault detection logic, the logic waits for a fault detection delay to elapse before reducing the current drive capability of the output stage. The reduced current drive allows the LTC4558 to detect when the fault has been removed. LTC4558 4558f ...
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... The V located very close to the V CCA,B to the ground plane. www.DataSheet4U.com Capacitor Selection A total of four capacitors is required to operate the LTC4558. An input bypass capacitor is required at V Output bypass capacitors are required on each of the Smart Card V pins. CC There are several types of ceramic capacitors available, each having considerably different characteristics ...
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... Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTC4558 BOTTOM VIEW—EXPOSED PAD PIN 1 NOTCH R = 0.20 TYP OR 0.25 × ...
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... BATT CLKIN I/OA RSTIN RSTA DATA CLKA V CLKRUNA CCA µCONTROLLER CLKRUNB GND ENABLEA ENABLEB V CCB CSEL CLKB VSELA RSTB VSELB I/OB LTC4558 COMMENTS V : 2.6V to 6.6V 1.8V/3V/5V OUT V : 2.7V to 10V 3V/5V OUT V : 2. 3V/5V OUT 5.5V 1.8V/3V/5V OUT V : 2.6V to 4.4V 3V/5V OUT ...