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LTC1699EMS8-82 Datasheet(PDF) 3 Page - Linear Technology |
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LTC1699EMS8-82 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 20 page  LTC1699 Series 3 ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. 2.7V ≤ VCC ≤ 5.5V (Notes 3, 4) unless otherwise stated. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS ISK1 SDA, PGOOD, CPU_ON, IO_ON, 0 ≤ VPIN ≤ 2.7V q 519 60 mA CLK_ON Sink Current at VCC = 2.7V ISK2 SDA, PGOOD, CPU_ON, IO_ON, 0 ≤ VPIN ≤ 5.5V q 35 65 150 mA CLK_ON Sink Current at VCC = 5.5V ILKG PGOOD, CPU_ON, IO_ON, 0 ≤ VPIN ≤ 5.5V q ±2 µA CLK_ON Leakage Current IPU VRON Pull-Up Current VPIN = 0 q –1 – 2.5 – 7 µA Timing (Note 5) fSMB SMBus Operating Frequency q 10 100 KHz tBUF Bus Free Time Between Stop/Start q 4.7 µs tHD:STA Hold Time After (Repeated) Start q 4.0 µs tSU:STA Repeated Start Setup Time q 4.7 µs tSU:STO Stop Condition Setup Time q 4.0 µs tHD:DAT Data Hold Time q 300 ns tSU:DAT Data Setup Time q 250 ns tLOW Clock Low Period q 4.7 µs tHIGH Clock High Period q 4.0 µs tf SCL, SDA Fall Time 0.9VCC to 0.65V q 300 ns tr SCL, SDA Rise Time 0.65V to 2.25V q 1000 ns tSSH SEL to SENSE High (Note 6) Toggle SEL to Switch from Min VOUT to Max VOUT, 500 ns VFB = 0.8V tSSL SEL to SENSE Low (Note 6) Toggle SEL to Switch from Max VOUT to Min VOUT, 500 ns VFB = 0.8V tSPL SEL Toggling to PGOOD Low Toggle SEL to Select New Code q 160 500 ns CL = 100pF, 10kΩ Pull-Up, S2 in Figure 1 tPH Stop Bit to CPU_ON, IO_ON CL = 100pF, 10kΩ Pull-Up, S2 in Figure 1 q 2 µs or CLK_ON High (Note 7) tPL Stop Bit to CPU_ON, IO_ON CL = 0.1µF, 10kΩ Pull-Up, S1 in Figure 1 q 20 50 µs or CLK_ON Low (Note 7) tPPL Stop Bit to PGOOD Low (Note 6) CL = 100pF, 10kΩ Pull-Up, S2 in Figure 1 q 250 ns tVH VRON High to CPU_ON, IO_ON CL = 100pF, 10kΩ Pull-Up, S2 in Figure 1 q 2 µs or CLK_ON High tVL VRON Low to CPU_ON, IO_ON, CL = 0.1µF, 10kΩ Pull-Up, S1 in Figure 1 q 50 µs CLK_ON Low tVPL VRON Low to PGOOD Low CL = 100pF, 10kΩ Pull-Up, S2 in Figure 1 q 130 500 ns tPGL PGOOD Low Duration CL = 100pF, 10kΩ Pull-Up, S2 in Figure 1 q 30 50 70 µs Note1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The LTC1699-80E, LTC1699-81E and LTC1699-82E are 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 3: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless otherwise specified. Note 4: All typical numbers are given for VCC = 5V and TA = 25°C. Note 5: These parameters are guaranteed by design and are not tested in production. SMBus timing is referenced to VIL and VIH levels. Note 6: Dominated by the switching regulator. The delay due to the LTC1699-80, LTC1699-81 or LTC1699-82 is typically 500ns. Note 7: Measured from the rising edge of SDA during Data High acknowledgement. |
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