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LTC4556EUF Datasheet(PDF) 4 Page - Linear Technology |
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LTC4556EUF Datasheet(HTML) 4 Page - Linear Technology |
4 / 20 page LTC4556 4 4556f ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VBATT = 3.3V, DVCC = 3.3V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: This specification applies to all three smart card voltage classes: 1.8V, 3V and 5V. Note 3: ROLCP ≡ (2VBATT – VCPO)/ICPO; VCPO will depend upon total load (ICC) and minimum supply voltage VBATT. See Figure 6. Note 4: The LTC4556E is guaranteed to meet performance specifications from 0 °C to 70°C. Specifications over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. Note 5: Based on long term current density limitation. TYPICAL PERFOR A CE CHARACTERISTICS VBATT SUPPLY VOLTAGE (V) 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 4556 G01 500 400 300 200 100 0 TA = 25°C ICC = 0µA VCC = 5V VCC = 1.8V VCC = 3V TEMPERATURE ( °C) –40 –15 10 35 60 85 4556 G02 6.0 5.5 5.0 4.5 4.0 3.5 DVCC = VBATT = 3.3V VCC = 5V CLK I/O TEMPERATURE ( °C) –40 –15 10 35 60 85 4556 G03 10 9 8 7 6 VBATT = 2.7V VCPO = 4.9V No Load Supply Current vs VBATT I/O and CLK Short-Circuit Current vs Temperature (CLK in Bidirectional Mode) Charge Pump Open-Loop Output Resistance vs Temperature (2VBATT – VCPO) / ICPO FAULT Low Level Output Voltage (VOL) Sink Current = – 200 µA q 0.005 0.3 V Leakage Current VFAULT = 5.5V q 1 µA Serial Port Timing tDS DIN Valid to SCLK Setup 8 ns tDH DIN Valid to SCLK Hold 8 ns tDD DOUT Output Delay CLOAD = 15pF 15 60 ns tL SCLK Low Time 50 ns tH SCLK High Time 50 ns tLW LD Pulse Width 50 ns tCL SCLK to LD 50 ns tLC LD to SCLK 0ns |
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