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參數(shù)資料
| 型號： | LT1511 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Constant-Current/ Constant-Voltage 3A Battery Charger with Input Current Limiting |
| 中文描述： | 恒定電流/恒定電壓3A電池充電器輸入限流 |
| 文件頁數(shù)： | 4/16頁 |
| 文件大?。?/td> | 145K |
| 代理商： | LT1511 |
4
LT1511
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C. V
CC
= 16V, V
BAT
= 8V, V
MAX
(maximum operating V
CC
) = 28V.
No load on any outputs unless otherwise noted.
The
G
denotes specifications which apply over the full operating
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Voltage Amplifier VA
Transconductance (Note 3)
Output Current from 50
μ
A to 500
μ
A
0.25
0.6
1.3
mho
Output Source Current
V
OVP
= V
REF
+ 10mV, V
PROG
= V
REF
+ 10mV
1.1
mA
OVP Input Bias Current
At 0.75mA VA Output Current
At 0.75mA VA Output Current, T
J
> 90
°
C
±
3
±
10
25
nA
nA
–15
Current Limit Amplifier CL1, 8V
≤
Input Common Mode
Turn-On Threshold
0.75mA Output Current
93
100
107
mV
Transconductance
Output Current from 50
μ
A to 500
μ
A
0.5
1
2
mho
CLP Input Current
0.75mA Output Current, V
UV
≥
0.4V
0.75mA Output Current V
UV
≥
0.4V
0.3
1
μ
A
CLN Input Current
0.8
2
mA
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
Tested with Test Circuit 1.
Note 3:
Tested with Test Circuit 2.
Note 4:
A linear interpolation can be used for reference voltage
specification between 0
°
C and –40
°
C.
TYPICAL PERFOR
M
A
CE CHARACTERISTICS
U
Thermally Limited Maximum
Charging Current
Efficiency of Figure 1 Circuit
DUTY CYCLE (%)
0
10
30
50
70
I
C
80
1511 TPC03
20
40
60
8
7
6
5
4
3
2
1
0
125
°
C
0
°
C
25
°
C
V
CC
= 16V
I
CC
vs Duty Cycle
INPUT VOLTAGE (V)
5
M
3.0
2.8
2.6
2.4
2.2
2.0
25
1511 TPC01
10
15
20
30
(
θ
JA
=30
°
C/W)
T
AMAX
=60
°
C
T
JMAX
=125
°
C
4.2V BATTERY
V
IN
≥
8V
8.4V BATTERY
V
IN
≥
11V
12.6V BATTERY
16.8V BATTERY
NOTE: FOR 4.2V AND 8.4V BATTERIES MAXIMUM
CHARGING CURRENT IS 3A FOR V
IN
– V
BAT
≥
3V
I
BAT
(A)
0.2
E
100
98
96
94
92
90
88
86
84
82
80
1.0
1.8
3.0
2.6
2.2
1511 TPC02
0.6
1.4
V
IN
= 16.5
V
BAT
= 8.4V
CHARGER EFFICIENCY
INCLUDES LOSS
IN DIODE D3
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