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LTC1960 Datasheet(PDF) 4 Page - Linear Technology |
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LTC1960 Datasheet(HTML) 4 Page - Linear Technology |
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4 / 24 page  LTC1960 4 1960fa ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating temperature range (Note 7), otherwise specifications are at TA = 25°C. VDCIN = 20V, VBAT1 = 12V, VBAT2 = 12V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS DACs VRES VDAC Resolution Guaranteed Monotonic (5V < VBAT < 25V) 11 bits VSTEP VDAC Granularity 16 mV VOFF VDAC Offset (Note 6) 0.8 V tVP VDAC Pulse Period 7 11 16.5 µs Charge Mux Switches tONC GCH1/GCH2 Tur-On Time VGCHX – VSCHX > 3V, VSCHX = TBD, CLOAD = 3nF 5 10 ms tOFFC GCH1/GCH2 Turn-Off Time VGCHX – VSCHX < 1V, from Time of 3 7 µs VCSN < VBATX – 30mV, VSCHX = TBD, CLOAD = 3nF VCON CH Gate Clamp Voltage ILOAD = 1µA GCH1 VGCH1 – VSCH1 5 5.8 7 V GCH2 VGCH2 – VSCH2 5 5.8 7 V VCOFF CH Gate Off Voltage ILOAD =10µA GCH1 VGCH1 – VSCH1 –0.8 –0.4 0 V GCH2 VGCH2 – VSCH2 –0.8 –0.4 0 V VTOC CH Switch Reverse Turn-Off Voltage VCSN – VBATX, 5V ≤ VBATX ≤ 28V ● 520 40 mV VFC CH Switch Forward Regulation Voltage VBATX – VCSN, 5V ≤ VBATX ≤ 28V ● 15 35 60 mV GCH1/GCH2 Active Regulation: VGCHX – VSCHX = 1.5V IOC(SRC) Max Source Current –2 µA IOC(SNK) Max Sink Current 2 µA VCHMIN BATX Voltage Below Which 3.5 4.7 V Charging is Inhibited (Does Not Apply to Low Current Mode) PowerPath Switches tDLY Blanking Period after UVLO Trip Switches Held Off 250 ms tPPB Blanking Period after LOPWR Trip Switches in 3-Diode Mode 1 sec tONPO GB1O/GB2O/GDCO Turn-On Time VGS < –3V, from Time of Battery/DC ● 510 µs Removal, or LOPWR Indication tOFFPO GB1O/GB2O/GDCO Turn-Off Time VGS > –1V, from Time of Battery/DC ● 37 µs Removal, or LOPWR Indication VPONO Output Gate Clamp Voltage ILOAD = 1µA GB1O Highest (VBAT1 or VSCP) – VGB1O 4.75 6.25 7 V GB2O Highest (VBAT2 or VSCP) – VGB2O 4.75 6.25 7 V GDCO Highest (VDCIN or VSCP) – VGDCO 4.75 6.25 7 V VPOFFO Output Gate Off Voltage ILOAD = –25µA GB1O Highest (VBAT1 or VSCP) – VGB1O 0.18 0.25 V GB2O Highest (VBAT2 or VSCP) – VGB2O 0.18 0.25 V GDCO Highest (VDCIN or VSCP) – VGDCO 0.18 0.25 V VTOP PowerPath Switch Reverse VSCP – VBATX or VSCP – VDCIN ● 520 60 mV Turn-Off Voltage 6V ≤ VSCP ≤ 28V VFP PowerPath Switch Forward VBATX – VSCP or VDCIN – VSCP ● 025 50 mV Regulation Voltage 6V ≤ VSCP ≤ 28V GDCI/GB1I/GB2I Active Regulation (Note 4) IOP(SRC) Source Current –4 µA IOP(SNK) Sink Current 75 µA |
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