Datasheet LTC1760 (Analog Devices) - 3
| Fabricante | Analog Devices |
| Descripción | Dual Smart Battery System Manager |
| Páginas / Página | 48 / 3 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| Formato / tamaño de archivo | PDF / 416 Kb |
| Idioma del documento | Inglés |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the full operating
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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 Supply and Reference
DCIN Operating Range DCIN Selected 6 28 V ICH0 DCIN Operating Current Not Charging (DCIN Selected) (Note 10) 1 1.5 mA ICH1 Charging (DCIN Selected) (Note 10) 1.3 2 mA IVCC2_AC1 VCC2 Operating Current AC Present (Note 11) 0.75 1 mA IVCC2_AC0 AC Not Present (Note 11) 75 100 µA Battery Operating Voltage Range Battery Selected, PowerPath Function 6 28 V Battery Selected, Charging Function (Note 2) 0 28 V IBAT Battery Drain Current Battery Selected, Not Charging, VDCIN = 0V (Note 10) 175 µA VPLUS Diodes Forward Voltage: VFDC DCIN to VPLUS IVCC = 10mA 0.8 V VFB1 BAT1 to VPLUS IVCC = 0mA 0.7 V VFB2 BAT2 to VPLUS IVCC = 0mA 0.7 V VFSCN SCN to VPLUS IVCC = 0mA 0.7 V UVLO Undervoltage Lockout Threshold VPLUS Ramping Down, Measured at VPLUS to GND l 3 5 V VVCC VCC Regulator Output Voltage l 4.9 5.2 5.5 V VLDR VCC Load Regulation No External Connection Beyond Applications Shown 0.2 1 % Herein
Switching Regulator
VTOL Voltage Accuracy With Respect to Voltage Reported by Battery l –32 32 mV VCHMIN < Requested Voltage < VLIMIT ITOL Current Accuracy With Respect to Current Reported by Battery 4mV/RSENSE < Requested Current < ILIMIT (Min) (Note 12) RILIMIT = 0 (Short to GND) l –2 2 mA RILIMIT = 10k ±1% l –4 4 mA RILIMIT = 33k ±1% l –8 8 mA RILIMIT = Open (or Short ILIMIT to VCC2) l –8 8 mA f0SC Regulator Switching Frequency 255 300 345 kHz fDO Regulator Switching Frequency in Low Duty Cycle ≥99% 20 25 kHz Dropout Mode DCMAX Regulator Maximum Duty Cycle 99 99.5 % IMAX Maximum Current Sense Threshold VITH = 2.2V 140 155 190 mV ISNS CA1 Input Bias Current VCSP = VCSN > 5V 150 µA CMSL CA1 Input Common Mode Low 0 V CMSH CA1 Input Common Mode High VDCIN – 0.2 V VCL1 CL1 Turn-On Threshold 95 100 105 mV C-Grade (Note 6) l 94 100 108 mV I-Grade (Note 6) l 90 100 108 mV TGATE Transition Time: TG tr TGATE Rise Time CLOAD = 3300pF, 10% to 90% 50 90 ns TG tr TGATE Fall Time CLOAD = 3300pF, 10% to 90% 50 90 ns BGATE Transition Time BG tr BGATE Rise Time CLOAD = 3300pF, 10% to 90% 50 90 ns BG tf BGATE Fall Time CLOAD = 3300pF, 10% to 90% 40 80 ns 1760fc For more information www.linear.com/LTC1760 3
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 Supply and Reference
DCIN Operating Range DCIN Selected 6 28 V ICH0 DCIN Operating Current Not Charging (DCIN Selected) (Note 10) 1 1.5 mA ICH1 Charging (DCIN Selected) (Note 10) 1.3 2 mA IVCC2_AC1 VCC2 Operating Current AC Present (Note 11) 0.75 1 mA IVCC2_AC0 AC Not Present (Note 11) 75 100 µA Battery Operating Voltage Range Battery Selected, PowerPath Function 6 28 V Battery Selected, Charging Function (Note 2) 0 28 V IBAT Battery Drain Current Battery Selected, Not Charging, VDCIN = 0V (Note 10) 175 µA VPLUS Diodes Forward Voltage: VFDC DCIN to VPLUS IVCC = 10mA 0.8 V VFB1 BAT1 to VPLUS IVCC = 0mA 0.7 V VFB2 BAT2 to VPLUS IVCC = 0mA 0.7 V VFSCN SCN to VPLUS IVCC = 0mA 0.7 V UVLO Undervoltage Lockout Threshold VPLUS Ramping Down, Measured at VPLUS to GND l 3 5 V VVCC VCC Regulator Output Voltage l 4.9 5.2 5.5 V VLDR VCC Load Regulation No External Connection Beyond Applications Shown 0.2 1 % Herein
Switching Regulator
VTOL Voltage Accuracy With Respect to Voltage Reported by Battery l –32 32 mV VCHMIN < Requested Voltage < VLIMIT ITOL Current Accuracy With Respect to Current Reported by Battery 4mV/RSENSE < Requested Current < ILIMIT (Min) (Note 12) RILIMIT = 0 (Short to GND) l –2 2 mA RILIMIT = 10k ±1% l –4 4 mA RILIMIT = 33k ±1% l –8 8 mA RILIMIT = Open (or Short ILIMIT to VCC2) l –8 8 mA f0SC Regulator Switching Frequency 255 300 345 kHz fDO Regulator Switching Frequency in Low Duty Cycle ≥99% 20 25 kHz Dropout Mode DCMAX Regulator Maximum Duty Cycle 99 99.5 % IMAX Maximum Current Sense Threshold VITH = 2.2V 140 155 190 mV ISNS CA1 Input Bias Current VCSP = VCSN > 5V 150 µA CMSL CA1 Input Common Mode Low 0 V CMSH CA1 Input Common Mode High VDCIN – 0.2 V VCL1 CL1 Turn-On Threshold 95 100 105 mV C-Grade (Note 6) l 94 100 108 mV I-Grade (Note 6) l 90 100 108 mV TGATE Transition Time: TG tr TGATE Rise Time CLOAD = 3300pF, 10% to 90% 50 90 ns TG tr TGATE Fall Time CLOAD = 3300pF, 10% to 90% 50 90 ns BGATE Transition Time BG tr BGATE Rise Time CLOAD = 3300pF, 10% to 90% 50 90 ns BG tf BGATE Fall Time CLOAD = 3300pF, 10% to 90% 40 80 ns 1760fc For more information www.linear.com/LTC1760 3