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LTC1760 Datasheet(PDF) 2 Page - Linear Technology |
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LTC1760 Datasheet(HTML) 2 Page - Linear Technology |
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2 / 44 page  LTC1760 2 1760f 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 TOP VIEW FW PACKAGE 48-LEAD PLASTIC TSSOP 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 SCH2 GCH2 GCH1 SCH1 TGATE BOOST SW DCIN VCC BGATE PGND COMP1 CLP CSP CSN VLIMIT ILIMIT TH1B TH1A SMBALERT TH2A TH2B MODE VCC2 VPLUS BAT2 BAT1 SCN SCP GDCO GDCI GB1O GB1I GB2O GB2I LOPWR VSET ITH ISET DCDIV SCL2 SCL SCL1 VDDS SDA2 SDA SDA1 GND Voltage from DCIN, SCP, SCN, CLP, VPLUS, SW to GND................................... 32V/–0.3 V Voltage from SCH1, SCH2 to GND ................ 28V/–0.3 V Voltage from BOOST to GND ........................ 37V/ –0.3V CSP, CSN, BAT1, BAT2 to GND ..................... 28V/–0.3V LOPWR, DCDIV to GND ................................ 10V/ –0.3V Voltage from VCC2, VDDS to GND .................... 7V/–0.3 V SDA1, SDA2, SDA, SCL1, SCL2, SCL, SMBALERT to GND ........................................................ 7V/–0.3V MODE to GND ..................................... VCC2 +0.3V/–0.3V COMP1 to GND ............................................... 5V/ –0.3V Maximum DC Current Into Pin SDA1, SDA2, SDA, SCL1, SCL2, SCL .............. ±3mA TH1A, TH2A ..................................................... –5mA TH1B, TH2B .................................................. –102µA Operating Ambient Temperature (Note 6) .... 0°C to 70°C Operating Junction Temperature ...........–40°C to 125°C Storage Temperature .............................–65°C to 150°C Lead Temperature (Soldering, 10 sec).................. 300°C ORDER PART NUMBER TJMAX = 125°C, θJA = 110°C/W LTC1760CFW ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1) ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VDCIN = 20V, VBAT1 = 12V, VBAT2 = 12V, VVDDS = 3.3V, VVCC2 = 5.2V unless otherwise noted. Consult LTC Marketing for parts specified with wider operating temperature ranges. 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 ● 35 V VVCC VCC Regulator Output Voltage ● 4.9 5.2 5.5 V VLDR VCC Load Regulation IVCC = 0mA to 10mA ● 0.2 1 % Switching Regulator VTOL Voltage Accuracy With Respect to Voltage Reported by Battery ● –32 32 mV VCHMIN < Requested Voltage < VLIMIT |
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