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LTC3586 Datasheet(PDF) 7 Page - Linear Technology |
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LTC3586 Datasheet(HTML) 7 Page - Linear Technology |
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7 / 38 page  LTC3675 7 3675fa ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 3.6V. (Note 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS tBUF Bus Free Time Between Stop and Start Condition 1.3 μs tHD_SDA Hold Time After Repeated Start Condition 0.6 μs tSU_STA Repeated Start Condition Set-Up Time 0.6 μs tSU_STO Stop Condition Set-Up Time 0.6 μs tHD_DAT(O) Data Hold Time Output 0 900 ns tHD_DAT(I) Data Hold Time Input 0 ns tSU_DAT Data Set-Up Time 100 ns tLOW SCL Clock Low Period 1.3 μs tHIGH SCL Clock High Period 0.6 μs tf Clock/Data Fall Time CB = Capacitance of One Bus Line (pF) 20+0.1CB 300 ns tr Clock/Data Rise Time CB = Capacitance of One Bus Line (pF) 20+0.1CB 300 ns tSP Input Spike Suppression Pulse Width 50 ns Interface Logic Pins (PBSTAT, WAKE, RSTB, IRQB, ONB) ILK(HIGH) Output High Leakage Current 3.6V at Pin –1 1 μA VOL Output Low Voltage 3mA into Pin 100 400 mV VONB(HIGH) ONB High Threshold 800 1200 mV VONB(LOW) ONB Low Threshold 400 700 mV Interface Logic Pins (EN1, EN2, EN3, EN4, ENBB) VHI_ALLOFF Enable Rising Threshold All Regulators and LED Driver Disabled l 400 650 1200 mV VEN_HYS Enable Falling Hysteresis 60 mV VHI Enable Rising Threshold At Least One Regulator/LED Driver Enabled l 380 400 420 mV IEN Enable Pin Leakage Current EN = 3.6V –1 1 μA Pushbutton Parameters; CT = 0.01μF tONB_LO ONB Low Time to PBSTAT Low WAKE High 28 50 72 ms tONB_WAKE ONB Low Time to WAKE High 280 400 520 ms tONB_HR ONB Low to Hard Reset 3.5 5 6.5 sec tHR Time for Which All Enabled Regulators are Disabled 0.7 1 1.3 sec tPBSTAT_PW PBSTAT Minimum Pulse Width 28 50 72 ms tWAKE_ON WAKE High Time 3.5 5 6.5 sec Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC3675 is tested under pulsed load conditions such that TA ≈ TJ. The LTC3675 is guaranteed to meet performance specifications from 0°C to 125°C. Specifications over the –40°C to 125°C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. Note 3: The LTC3675 includes overtemperature protection which protects the device during momentary overload conditions. Junction temperature will exceed 125°C when overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability. Note 4: Static current, switches not switching. Actual current may be higher due to gate charge losses at the switching frequency. Note 5: Currents measured at a specific VIN pin. Buck 1 (VIN, Pin 6); Buck 2 (VIN, Pin 7); Buck 3 and Buck 4 (VIN, Pin 10); Boost and Buck Boost (VIN, Pin 34); LED driver (VIN, Pin 31). Note 6: The current limit features of this part are intended to protect the IC from short term or intermittent fault conditions. Continuous operation above the maximum specified pin current rating may result in device degradation over time. Note 7: With dual string operation, the LED pin with the lower voltage sets the regulation point. |
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Similar Description - LTC3586 |
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