Datasheet LTC4007-1 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 4A, High Efficiency, Li-Ion Battery Charger |
| 页数 / 页 | 24 / 3 — elecTrical characTerisTics. The. denotes the specifications which apply … |
| 文件格式/大小 | PDF / 309 Kb |
| 文件语言 | 英语 |
elecTrical characTerisTics. The. denotes the specifications which apply over the full operating
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LTC4007-1
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VDCIN = 20V, VBAT = 12V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SHDN Pin Current –10 µA Operating Current in Shutdown VSHDN = 0V, Sum of Current from CLP, 2 3 mA CLN, DCIN
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 9.233 9.519 9.805 V 3C4C = 0V, CHEM = Open l 9.458 9.750 10.043 V 3C4C = Open, CHEM = 0V l 12.311 12.692 13.074 V 3C4C = Open, CHEM = Open l 12.610 13.000 13.390 V ICL Threshold Accuracy 83 93 1O5 mV 40071fa For more information www.linear.com/LTC4007-1 3 Document Outline Description Typical Application Absolute Maximum Ratings Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Application Related Parts
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VDCIN = 20V, VBAT = 12V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SHDN Pin Current –10 µA Operating Current in Shutdown VSHDN = 0V, Sum of Current from CLP, 2 3 mA CLN, DCIN
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 9.233 9.519 9.805 V 3C4C = 0V, CHEM = Open l 9.458 9.750 10.043 V 3C4C = Open, CHEM = 0V l 12.311 12.692 13.074 V 3C4C = Open, CHEM = Open l 12.610 13.000 13.390 V ICL Threshold Accuracy 83 93 1O5 mV 40071fa For more information www.linear.com/LTC4007-1 3 Document Outline Description Typical Application Absolute Maximum Ratings Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Application Related Parts