Datasheet LTC1760 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | Dual Smart Battery System Manager |
| Pages / Page | 48 / 4 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| File Format / Size | PDF / 416 Kb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the full operating
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Text Version of Document
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 Trip Points
VTR DCDIV/LOPWR Threshold VDCDIV or VLOPWR Falling C-Grade (Note 6) l 1.166 1.19 1.215 V I-Grade (Note 6) l 1.162 1.19 1.215 V VTHYS DCDIV/LOPWR Hysteresis Voltage VDCDIV or VLOPWR Rising 30 mV IBVT DCDIV/LOPWR Input Bias Current VDCDIV or VLOPWR = 1.19V 20 200 nA VTSC Short-Circuit Comparator Threshold VSCP – VSCN, VCC ≥ 5V C-Grade (Note 6) l 90 100 115 mV I-Grade (Note 6) l 88 100 115 mV VFTO Fast PowerPath Turn-Off Threshold VDCDIV Rising from VCC 6 7 7.9 V VOVSD Overvoltage Shutdown Threshold as a VSET Rising from 0.8V until TGATE and BGATE 107 % Percent of Programmed Charger Voltage Stop Switching
DACs
IRES IDAC Resolution Guaranteed Monotonic 10 Bits IDAC Pulse Period: tIP Normal Mode 6 10 15 µs tILOW Wake-Up Mode 50 ms Charging Current Granularity RILIMIT = 0 (Short ILIMIT to GND) 1 mA RILIMIT = 10k ±1% 2 mA RILIMIT = 33k ±1% 4 mA RILIMIT = Open (or Short ILIMIT to VCC2 ) 4 mA IWAKE_UP Wake-Up Charging Current (Note 5) 60 80 100 mA ILIMIT Charging Current Limit C-Grade (Note 6) RILIMIT = 0 (Short ILIMIT to GND) l 980 1000 1070 mA RILIMIT = 10k ±1% l 1960 2000 2140 mA RILIMIT = 33k ±1% l 2490 3000 3210 mA R 3920 4000 4280 mA ILIMIT = Open (or Short ILIMIT to VCC2 ) l I-Grade (Note 6) RILIMIT = 0 (Short ILIMIT to GND) l 930 1000 1110 mA RILIMIT = 10k ±1% l 1870 2000 2220 mA RILIMIT = 33k ±1% l 2380 3000 3320 mA RILIMIT = Open (or Short ILIMIT to VCC2 ) l 3750 4000 4430 mA VRES VDAC Resolution Guaranteed Monotonic (5V < VBAT < 25V) 11 Bits VSTEP VDAC Granularity 16 mV VLIMIT Charging Voltage Limit RVLIMIT = 0 (Short VLIMIT to GND) l 8400 8432 8464 mV (Note 7) RVLIMIT = 10k ±1% l 12608 12640 12672 mV RVLIMIT = 33k ±1% l 16832 16864 16896 mV RVLIMIT = 100k ±1% l 21024 21056 21088 mV RVLIMIT = Open (or Short VLIMIT to VCC2 )(Note 13) l 32768 mV
Charge MUX Switches
tONC GCH1/GCH2 Turn-On Time VGCHX – VSCHX > 3V, CLOAD = 3000pF 5 10 ms tOFFC GCH1/GCH2 Turn-Off Time VGCHX – VSCHX < 1V, from Time of 15 µs VCSN < VBATX – 30mV, CLOAD = 3000pF VCON CH Gate Clamp Voltage ILOAD = 1µA GCH1 VGCH1 – VSCH1 5 5.8 7 V GCH2 VGCH2 – VSCH2 5 5.8 7 V 1760fc 4 For more information www.linear.com/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 Trip Points
VTR DCDIV/LOPWR Threshold VDCDIV or VLOPWR Falling C-Grade (Note 6) l 1.166 1.19 1.215 V I-Grade (Note 6) l 1.162 1.19 1.215 V VTHYS DCDIV/LOPWR Hysteresis Voltage VDCDIV or VLOPWR Rising 30 mV IBVT DCDIV/LOPWR Input Bias Current VDCDIV or VLOPWR = 1.19V 20 200 nA VTSC Short-Circuit Comparator Threshold VSCP – VSCN, VCC ≥ 5V C-Grade (Note 6) l 90 100 115 mV I-Grade (Note 6) l 88 100 115 mV VFTO Fast PowerPath Turn-Off Threshold VDCDIV Rising from VCC 6 7 7.9 V VOVSD Overvoltage Shutdown Threshold as a VSET Rising from 0.8V until TGATE and BGATE 107 % Percent of Programmed Charger Voltage Stop Switching
DACs
IRES IDAC Resolution Guaranteed Monotonic 10 Bits IDAC Pulse Period: tIP Normal Mode 6 10 15 µs tILOW Wake-Up Mode 50 ms Charging Current Granularity RILIMIT = 0 (Short ILIMIT to GND) 1 mA RILIMIT = 10k ±1% 2 mA RILIMIT = 33k ±1% 4 mA RILIMIT = Open (or Short ILIMIT to VCC2 ) 4 mA IWAKE_UP Wake-Up Charging Current (Note 5) 60 80 100 mA ILIMIT Charging Current Limit C-Grade (Note 6) RILIMIT = 0 (Short ILIMIT to GND) l 980 1000 1070 mA RILIMIT = 10k ±1% l 1960 2000 2140 mA RILIMIT = 33k ±1% l 2490 3000 3210 mA R 3920 4000 4280 mA ILIMIT = Open (or Short ILIMIT to VCC2 ) l I-Grade (Note 6) RILIMIT = 0 (Short ILIMIT to GND) l 930 1000 1110 mA RILIMIT = 10k ±1% l 1870 2000 2220 mA RILIMIT = 33k ±1% l 2380 3000 3320 mA RILIMIT = Open (or Short ILIMIT to VCC2 ) l 3750 4000 4430 mA VRES VDAC Resolution Guaranteed Monotonic (5V < VBAT < 25V) 11 Bits VSTEP VDAC Granularity 16 mV VLIMIT Charging Voltage Limit RVLIMIT = 0 (Short VLIMIT to GND) l 8400 8432 8464 mV (Note 7) RVLIMIT = 10k ±1% l 12608 12640 12672 mV RVLIMIT = 33k ±1% l 16832 16864 16896 mV RVLIMIT = 100k ±1% l 21024 21056 21088 mV RVLIMIT = Open (or Short VLIMIT to VCC2 )(Note 13) l 32768 mV
Charge MUX Switches
tONC GCH1/GCH2 Turn-On Time VGCHX – VSCHX > 3V, CLOAD = 3000pF 5 10 ms tOFFC GCH1/GCH2 Turn-Off Time VGCHX – VSCHX < 1V, from Time of 15 µs VCSN < VBATX – 30mV, CLOAD = 3000pF VCON CH Gate Clamp Voltage ILOAD = 1µA GCH1 VGCH1 – VSCH1 5 5.8 7 V GCH2 VGCH2 – VSCH2 5 5.8 7 V 1760fc 4 For more information www.linear.com/LTC1760
