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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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LTC3554EPD bảng dữ liệu(PDF) 5 Page - Linear Technology |
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LTC3554EPD bảng dữ liệu(HTML) 5 Page - Linear Technology |
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5 / 36 page  LTC3554 5 3554f SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Pushbutton Pin (ON) VCC_PB Pushbutton Operating Supply Range (Notes 4 , 9) l 2.7 5.5 V VON_TH ON Threshold Rising ON Threshold Falling 0.4 1.2 V V ION ON Input Current VON = VCC (Note 4) –1 1 μA RPB_PU Pushbutton Pull-Up Resistance Pull-Up to VCC (Note 4) 200 400 650 kΩ Logic Input Pins (PWR_ON1, PWR_ON2) VPWR_ONx PWR_ONx Threshold Rising PWR_ONx Threshold Falling 0.4 1.2 V V IPWR_ONx PWR_ONx Input Current –1 1 μA Status Output Pins (PBSTAT, PGOOD) IPBSTAT PBSTAT Output High Leakage Current VPBSTAT = 3V –1 1 μA VPBSTAT PBSTAT Output Low Voltage IPBSTAT = 3mA 0.1 0.4 V IPGOOD PGOOD Output High Leakage Current VPGOOD = 3V –1 1 μA VPGOOD PGOOD Output Low Voltage IPGOOD = 3mA 0.1 0.4 V VTHPGOOD PGOOD Threshold Voltage (Note 10) –8 % Pushbutton Timing Parameters (Note 11) tON_PBSTATL Minimum ON Low Time to Cause PBSTAT Low ON Brought Low During Power-On (PON) or Power-Up (PUP1, PUP2) States 50 ms tON_PBSTATH Delay from ON High to PBSTAT High Power-On (PON) State, After PBSTAT Has Been Low for at Least tPBSTAT_PW 900 μs tON_PUP Minimum ON Low Time to Enter Power-Up (PUP1 or PUP2) State Starting in the Hard Reset (HR) or Power-Off (POFF) States 400 ms tON_HR Minimum ON Low Time to Hard Reset ON Brought Low During the Power-On (PON) or Power-Up (PUP1, PUP2) States 45 6 s tPBSTAT_PW PBSTAT Minimum Pulse Width Power-On (PON) or Power-Up (PUP1, PUP2) States 40 50 ms tEXTPWR Power-Up from USB Present to Power-Up (PUP1 or PUP2) State Starting in the Hard Reset (HR) or Power-Off (POFF) States 100 ms tPON_UP Any PWR_ONx High to Power-On State Starting with Both PWR_ONx Low in the Power-Off (POFF) State 900 μs tPON_DIS PWR_ONx Low to Buckx Disabled 1 μs tPUP Power-Up (PUP1 or PUP2) State Duration 5 s tPDN Power-Down (PDN1 or PDN2) State Duration 1s tPGOODH Bucks in Regulation to PGOOD High All Enabled Bucks within PGOOD Threshold Voltage 230 ms tPGOODL Bucks Disabled to PGOOD Low All Bucks Disabled 100 μs PUSHBUTTON INTERFACE ELECTRICAL CHARACTERISTICS 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 LTC3554 is guaranteed to meet performance specifications from 0°C to 85°C. Specifications over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. The l denotes specifications that apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VBAT = 3.8V, unless otherwise noted. |
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