Datasheet LTC4007 (Analog Devices) - 3

LTC4007
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range (Note 4), otherwise specifications are at TA = 25°C. VDCIN = 20V, VBAT = 12V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Current Sense Amplifier, CA1
Input Bias Current Into BAT Pin 11.67 µA CMSL CA1/I1 Input Common Mode Low l 0 V CMSH CA1/I1 Input Common Mode High l VCLN – 0.2 V
Current Comparators ICMP and IREV
ITMAX Maximum Current Sense Threshold (VCSP – VBAT) VITH = 2.5V l 140 165 200 mV ITREV Reverse Current Threshold (VCSP – VBAT) –30 mV
Current Sense Amplifier, CA2
Transconductance 1 mmho Source Current Measured at ITH, VITH = 1.4V –40 µA Sink Current Measured at ITH, VITH = 1.4V 40 µA
Current Limit Amplifier
Transconductance 1.4 mmho VCLP Current Limit Threshold l 93 100 107 mV ICLP CLP Input Bias Current 100 nA
Voltage Error Amplifier, EA
Transconductance 1 mmho Sink Current Measured at ITH, VITH = 1.4V 36 µA OVSD Overvoltage Shutdown Threshold as a Percent of l 102 107 110 % Programmed Charger Voltage
Input P-Channel FET Driver (INFET)
DCIN Detection Threshold (VDCIN – VCLN) DCIN Voltage Ramping Up l 0 0.17 0.25 V from VCLN – 0.1V Forward Regulation Voltage (VDCIN – VCLN) l 25 50 mV Reverse Voltage Turn-Off Voltage (VDCIN – VCLN ) DCIN Voltage Ramping Down l –60 –25 mV INFET “On” Clamping Voltage (VDCIN – VINFET) IINFET = 1µA l 5 5.8 6.5 V INFET “Off” Clamping Voltage (VDCIN – VINFET) IINFET = –25µA 0.25 V
Thermistor
NTCVR Reference Voltage During Sample Time 4.5 V High Threshold VNTC Rising l NTCVR NTCVR NTCVR V • 0.48 • 0.5 • 0.52 Low Threshold VNTC Falling l NTCVR NTCVR NTCVR V • 0.115 • 0.125 • 0.135 Thermistor Disable Current VNTC ≤ 10V 10 µA
Indicator Outputs (ACP, CHG, FLAG, LOBAT, ICL, FAULT
C10TOL FLAG (C/10) Accuracy Voltage Falling at PROG l 0.375 0.397 0.420 V LBTOL LOBAT Threshold Accuracy 3C4C = 0V, CHEM = 0V l 7.10 7.32 7.52 V 3C4C = 0V, CHEM = Open l 7.27 7.50 7.71 V 3C4C = Open, CHEM = 0V l 9.46 9.76 10.10 V 3C4C = Open, CHEM = Open l 9.70 10 10.28 V RESTART Threshold Accuracy 3C4C = 0V, CHEM = 0V l 11.13 11.42 11.65 V 3C4C = 0V, CHEM = Open l 11.40 11.70 11.94 V 3C4C = Open, CHEM = 0V l 14.84 15.23 15.54 V 3C4C = Open, CHEM = Open l 15.20 15.60 15.92 V ICL Threshold Accuracy 83 93 1O5 mV Rev D For more information www.analog.com 3 Document Outline Description Typical Application Absolute Maximum Ratings Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Typical Application Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuit Operation Applications Information Package Description Revision History Typical Application Related Parts