Datasheet LTC1760 (Analog Devices) - 5

LTC1760
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C (Note 6). VDCIN = 20V, VBAT1 = 12V, VBAT2 = 12V, VVDDS = 3.3V, VVCC2 = 5.2V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
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 VBATX – VCSN, 5V ≤ VBATX ≤ 28V C-Grade (Note 6) l 5 20 40 mV I-Grade (Note 6) l 2 20 40 mV VFC CH Switch Forward Regulation Voltage VCSN – VBATX, 5V ≤ VBATX ≤ 28V l 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 (Note 14) 3.5 4.7 V Charging is Inhibited
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 l 5 10 µs Removal, or LOPWR Indication, CLOAD = 3000pF tOFFPO GB1O/GB2O/GDCO Turn-Off Time VGS > –1V, from Time of Battery/DC l 3 7 µs Removal, or LOPWR Indication, CLOAD = 3000pF 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 Turn-Off Voltage 6V ≤ VSCP ≤ 28V C-Grade (Note 6) l 5 20 60 mV I-Grade (Note 6) l 2 20 60 mV VFP PowerPath Switch Forward VBATX – VSCP or VDCIN – VSCP l 0 25 50 mV Regulation Voltage 6V ≤ VSCP ≤ 28V GDCI/GB1I/GB2I Active Regulation: (Note 3) IOP(SRC) Source Current –4 µA IOP(SNK) Sink Current 75 µA tONPI Gate B1I/B2I/DCI Turn-On Time VGS < –3V, CLOAD = 3000pF (Note 4) 300 µs tOFFPI Gate B1I/B2I/DCI Turn-Off Time VGS > –1V, CLOAD = 3000pF (Note 4) 10 µs VPONI Input Gate Clamp Voltage ILOAD = 1µA GB1I Highest (VBAT1 or VSCP) – VGB1I 4.75 6.7 7.5 V GB2I Highest (VBAT2 or VSCP) – VGB2I 4.75 6.7 7.5 V GDCI Highest (VDCIN or VSCP) – VGDCI 4.75 6.7 7.5 V VPOFFI Input Gate Off Voltage ILOAD = –25µA GB1I Highest (VBAT1 or VSCP) – VGB1I 0.18 0.25 V GB2I Highest (VBAT2 or VSCP) – VGB2I 0.18 0.25 V GDCI Highest (VDCIN or VSCP) – VGDCI 0.18 0.25 V 1760fc For more information www.linear.com/LTC1760 5