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LTC4006EGN-4 Datasheet(PDF) 3 Page - Linear Technology

Part # LTC4006EGN-4
Description  4A, High Efficiency, Standalone Li-Ion Battery Charger
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4006EGN-4 Datasheet(HTML) 3 Page - Linear Technology

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3
LTC4006
4006fa
The
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 = 2.5V
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
1.5
mmho
VCLP
Current Limit Threshold
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
102
107
110
%
of Programmed Charger Voltage
Input P-Channel FET Driver (INFET)
DCIN Detection Threshold (VDCIN – VCLN)
DCIN Voltage Ramping Up
0
0.17
0.25
V
from VCLN – 0.1V
Forward Regulation Voltage (VDCIN – VCLN)
25
50
mV
Reverse Voltage Turn-Off Voltage (VDCIN – VCLN)
DCIN Voltage Ramping Down
–60
–25
mV
INFET “On” Clamping Voltage (VDCIN – VINFET)IINFET = 1µA
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
NTCVR
NTCVR
NTCVR
V
• 0.48
• 0.5
• 0.52
Low Threshold
VNTC Falling
NTCVR
NTCVR
NTCVR
V
• 0.115
• 0.125
• 0.135
Thermistor Disable Current
VNTC ≤ 10V
10
µA
Indicator Outputs (ACP/SHDN, CHG)
C10TOL
C/10 Indicator Accuracy
Voltage Falling at PROG
0.375
0.400
0.425
V
LBTOL
LOBAT Threshold Accuracy
LTC4006-6
4.70
4.93
5.14
V
LTC4006-2
7.27
7.5
7.71
V
LTC4006-4
9.70
10
10.28
V
RESTART Threshold Accuracy
LTC4006-6
7.5
7.8
7.96
V
LTC4006-2
11.35
11.7
11.94
V
LTC4006-4
15.15
15.6
15.92
V
VOL
Low Logic Level of ACP/SHDN, CHG
IOL = 100µA
0.5
V
VOH
High Logic Level of ACP/SHDN
IOH = –1µA
2.7
V
IPO
Pull-Up Current on ACP/SHDN
V = 0V
–10
µA
IC10
C/10 Indicator Sink Current from CHG
VOH = 3V
15
25
38
µA
IOFF
Off State Leakage Current of CHG
VOH = 3V
–1
1
µA
Timer Defeat Threshold at CHG
1
V


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