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LTC2954 Datasheet(PDF) 3 Page - Linear Technology |
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LTC2954 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 18 page  LTC2954 3 2954fb The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 2.7V to 26.4V, unless otherwise noted. (Note 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Supply Voltage Range Steady State Operation l 2.7 26.4 V IIN VIN Supply Current System Power-On, VIN = 2.7V to 24V l 612 μA VUVL VIN Undervoltage Lockout VIN Falling l 2.2 2.3 2.5 V VUVL(HYST) VIN Undervoltage Lockout Hysteresis 50 400 700 mV Pushbutton, Enable (PB, EN/EN)) VPB(MIN, MAX) PB Voltage Range Single-Ended l –1 26.4 V IPB PB Input Current 2.5V < VPB < 26.4V VPB = 1V VPB = 0.6V l l l –1 –3 –6 –9 ±1 –12 –15 μA μA μA VPB(VTH) PB Input Threshold PB Falling l 0.6 0.8 1 V VPB(VOC) PB Open Circuit Voltage IPB = –1μA 1 1.6 2 V tEN,LOCKOUT EN/EN Lockout Time (Note 5) Enable Released → Enable Asserted l 200 256 325 ms IEN(LKG) EN/EN Leakage Current VEN/EN = 1V, Sink Current Off VEN/EN = 26.4V, Sink Current Off l l ±0.1 ±1 μA μA VEN(VOL) EN/EN Voltage Output Low IEN/EN = 500μA l 0.11 0.4 V Power-On Timing Pin (ONT) IONT(PU) ONT Pull-Up Current VONT = 0V l –2.4 –3 –3.6 μA IONT(PD) ONT Pull-Down Current VONT = 1.3V l 2.4 3 3.6 μA tDB, ON Internal Turn-On Debounce Time ONT Pin Float, PB Falling →Enable Asserted l 26 32 41 ms tONT Additional Adjustable Turn-On Time CONT = 1500pF l 9 11.5 13.5 ms Power-Down Timing Pin (PDT) IPDT(PU) PDT Pull-Up Current VPDT = 0V l –2.4 –3 –3.6 μA IPDT(PD) PDT Pull-Down Current VPDT = 1.3V l 2.4 3 3.6 μA tDB,OFF Turn-Off Interrupt Debounce Time PB Falling →INT Falling l 26 32 41 ms tPD,MIN Internal PB Power-Down Debounce Time (Note 4) PDT Pin Float, PB Falling →Enable Released l 52 64 82 ms tPDT Additional Adjustable PB Power-Down Debounce Time CPDT = 1500pF l 9 11.5 13.5 ms tINT,MIN Minimum INT Pulse Width INT Asserted →INT Released l 26 32 41 ms tINT,MAX Maximum INT Pulse Width CPDT = 1500pF, INT Asserted → INT Released l 35 43.5 54.5 ms μP Handshake Pins (INT, KILL) IINT(LKG) INT Leakage Current VINT = 3V l ±1 μA VINT(VOL) INT Output Voltage Low IINT = 3mA l 0.11 0.4 V VKILL(TH) KILL Input Threshold Voltage KILL Falling l 0.57 0.6 0.63 V VKILL(HYST) KILL Input Threshold Hysteresis l 10 30 50 mV IKILL(LKG) KILL Leakage Current VKILL = 0.6V l ±0.1 μA tKILL(PW) KILL Minimum Pulse Width l 30 μs tKILL(PD) KILL Propagation Delay KILL Falling →Enable Released l 30 μs tKILL,ON BLANK KILL Turn-On Blanking (Note 3) KILL = Low, Enable Asserted → Enable Released l 400 512 650 ms ELECTRICAL CHARACTERISTICS |
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Similar Description - LTC2954 |
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