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LTC4007 датащи(PDF) 3 Page - Linear Technology

номер детали LTC4007
подробное описание детали  4A, High Efficiency, Standalone Li Battery Charger
PDF  20 Pages
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производитель  LINER [Linear Technology]
домашняя страница  http://www.linear.com
Logo LINER - Linear Technology

LTC4007 датащи(HTML) 3 Page - Linear Technology

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LTC4007
4007i
The q denotes 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.
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Current Comparators ICMP and IREV
ITMAX
Maximum Current Sense Threshold (VCSP – VBAT)VITH = 2.4V
q
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
q
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
q
102
107
110
%
of Programmed Charger Voltage
Input P-Channel FET Driver (INFET)
DCIN Detection Threshold (VDCIN – VCLN)
DCIN Voltage Ramping Up
q
0
0.17
0.25
V
from VCLN – 0.1V
Forward Regulation Voltage (VDCIN – VCLN)
q
25
50
mV
Reverse Voltage Turn-Off Voltage (VDCIN – VCLN)
DCIN Voltage Ramping Down
q
–60
– 25
mV
INFET “On” Clamping Voltage (VDCIN – VINFET)IINFET = 1µA
q
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
q
NTCVR
NTCVR
NTCVR
V
• 0.48
• 0.5
• 0.52
Low Threshold
VNTC Falling
q
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
q
0.375
0.397
0.420
V
LBTOL
LOBAT Threshold Accuracy
3C4C = 0V, CHEM = 0V
q
7.10
7.32
7.52
V
3C4C = 0V, CHEM = Open
q
7.27
7.50
7.71
V
3C4C = Open, CHEM = 0V
q
9.46
9.76
10.10
V
3C4C = Open, CHEM = Open
q
9.70
10
10.28
V
RESTART Threshold Accuracy
3C4C = 0V, CHEM = 0V
q
11.13
11.42
11.65
V
3C4C = 0V, CHEM = Open
q
11.40
11.70
11.94
V
3C4C = Open, CHEM = 0V
q
14.84
15.23
15.54
V
3C4C = Open, CHEM = Open
q
15.20
15.60
15.92
V
ICL Threshold Accuracy
83
93
1O5
mV



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