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參數(shù)資料
| 型號(hào)： | LT1513IT7-2 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SEPIC Constant- or Programmable-Current/ Constant-Voltage Battery Charger |
| 中文描述： | 5.4 A BATTERY CHARGE CONTROLLER, 580 kHz SWITCHING FREQ-MAX, PSFM7 |
| 封裝： | PLASTIC, TO-220, 7 PIN |
| 文件頁(yè)數(shù)： | 3/16頁(yè) |
| 文件大小： | 299K |
| 代理商： | LT1513IT7-2 |
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3
LT1513/LT1513-2
ELECTRICAL C
V
IN
= 5V, V
C
= 0.6V, V
FB
= V
REF
, I
FB
= 0V, V
SW
and S/S pins open, unless otherwise noted.
HARA TERISTICS
SYMBOL
PARAMETER
Error Amplifier Clamp Voltage
CONDITIONS
High Clamp, V
FB
= 1V
Low Clamp, V
FB
= 1.5V
MIN
1.70
0.25
TYP
1.95
0.40
500
1
500
500
MAX
2.30
0.52
UNITS
V
V
A
V
Error Amplifier Voltage Gain
V
C
Pin Threshold
Switching Frequency
V/V
Duty Cycle = 0%
2.7V
≤
V
IN
≤
25V
0
°
C
≤
T
J
≤
125
°
C
T
J
< 0
°
C
0.8
450
430
400
85
1.25
550
580
580
V
f
kHz
kHz
kHz
%
ns
Maximum Switch Duty Cycle
Switch Current Limit Blanking Time
Output Switch Breakdown Voltage
G
95
130
47
260
BV
0
°
C
≤
T
J
≤
125
°
C
T
J
< 0
°
C
40
35
V
V
V
SAT
I
LIM
Output Switch ON Resistance
Switch Current Limit
I
SW
= 2A
Duty Cycle = 50%
Duty Cycle = 80% (Note 1)
G
0.25
3.8
3.4
15
4
0.45
5.4
5.0
25
A
A
G
G
3.0
2.6
I
IN
/
I
SW
Supply Current Increase During Switch ON Time
Control Voltage to Switch Current
Transconductance
Minimum Input Voltage
Supply Current
Shutdown Supply Current
mA/A
A/V
G
2.4
4
12
2.7
5.5
30
50
2
25
15
800
V
I
Q
2.7V
≤
V
IN
≤
25V
2.7V
≤
V
IN
≤
25V, V
S/S
≤
0.6V, T
J
≥
0
°
C
T
J
< 0
°
C
2.7V
≤
V
IN
≤
25V
G
mA
μ
A
μ
A
G
Shutdown Threshold
Shutdown Delay
S/S Pin Input Current
Synchronization Frequency Range
G
0.6
5
–10
600
1.3
12
V
G
μ
s
μ
A
kHz
0V
≤
V
S/S
≤
5V
G
G
The
G
denotes specifications which apply over the full operating
temperature range.
Note 1:
For duty cycles (DC) between 50% and 85%, minimum
guaranteed switch current is given by I
LIM
= 1.33 (2.75 – DC).
Note 2:
The I
FB
pin is servoed to its regulating state with V
C
= 0.8V.
Note 3:
Consult factory for grade selected parts.
Note 4:
The I
FB
pin is sevoed to regulate FB to 1.245V
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