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LTC4010 Datasheet(PDF) 3 Page - Linear Integrated Systems

Part # LTC4010
Description  High Efficiency Standalone Nickel Battery Charger
Download  20 Pages
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Manufacturer  LINEAR [Linear Integrated Systems]
Direct Link  http://www.linearsystems.com
Logo LINEAR - Linear Integrated Systems

LTC4010 Datasheet(HTML) 3 Page - Linear Integrated Systems

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3
LTC4010
4010p
The
indicates specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 12V, BAT = 4.8V, GND = PGND = 0V, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
∆VLI
BAT – SENSE Line Regulation
5.5V < VCC < 34V, Fast Charge
1
TBD
mV
IBAT
BAT Input Bias Current
0.3V < BAT < VCC – 0.1V
–2
0
2
mA
ISENSE
SENSE Input Bias Current
SENSE = BAT
50
150
µA
IOFF
Input Bias Current
SENSE or BAT, VCELL = 0V
–1
0
1
µA
fTYP
Typical Switching Frequency
485
550
615
kHz
fMIN
Minimum Switching Frequency
20
30
kHz
DCMAX
Maximum Duty Cycle
98
99
%
VOL(TG)
TGATE Output Voltage Low (Note 6)
VCC ≥ 9V, No Load (VCC – TGATE)
5.35
6.3
8.75
V
VCC ≤ 7.5V, No Load
50
mV
VOH(TG)
TGATE Output Voltage High
VCC – TGATE, No Load
050
mV
tR(TG)
TGATE Rise Time
CLOAD = 3nF, 10% to 90%
35
50
ns
tF(TG)
TGATE Fall Time
CLOAD = 3nF, 10% to 90%
45
100
ns
VOL(BG)
BGATE Output Voltage Low
No Load
050
mV
VOH(BG)
BGATE Output Voltage High
No Load
INTVDD
INTVDD
V
– 0.05
tR(BG)
BGATE Rise Time
CLOAD = 1.6nF, 10% to 90%
30
65
ns
tF(BG)
BGATE Fall Time
CLOAD = 1.6nF, 10% to 90%
10
25
ns
ADC Inputs
ILEAK
Analog Channel Leakage
0V < VCELL < 2V, 0V < VTEMP < 2V
±100
nA
Charger Thresholds
VBP
Battery Present Threshold Voltage
340
350
360
mV
VBOV
Battery Overvoltage
1.9
1.95
2
V
VMFC
Minimum Fast Charge Voltage
875
900
925
mV
VFCBF
Fast Charge Battery Fault Voltage
1.17
1.22
1.27
V
∆VV(TERM)
–∆V Termination
CHEM = Open (NiCd)
18
20
22.0
mV
CHEM = 0V (NiMH)
8.5
10
11.5
mV
VAR
Automatic Recharge Voltage
VCELL Decreasing
1.275
1.325
1.375
V
∆VT(TERM)
∆T Termination (Note 7)
CHEM = Open (NiCd)
1.84
2
2.16
°C/MIN
CHEM = 0V (NiMH)
0.86
1
1.14
°C/MIN
VT(MIN)
Minimum Charging Temperature
VTEMP Increasing
35
7
°C
(Note 7)
VT(MAXI)
Maximum Charge Initiation
VTEMP Decreasing, Not Charging
43
45
47
°C
Temperature (Note 7)
VT(MAXC)
Maximum Charging Temperature
VTEMP Decreasing, Charging
58
60
62
°C
(Note 7)
VTEMP(D)
VTEMP Disable Threshold Voltage
2.85
3.3
V
VTEMP(P)
Pause Threshold Voltage
160
280
mV
Charger Timing
∆tTIMER
Internal Time Base Error
–10
10
%
∆tMAX
Programmable Timer Error
RTIMER = 49.9k
–15
15
%


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