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參數(shù)資料
| 型號： | LT1308AIS8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | JT 55C 55#22D SKT PLUG |
| 中文描述： | 4.5 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SOP-8 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大?。?/td> | 185K |
| 代理商： | LT1308AIS8 |
3
LT1308A/LT1308B
ELECTRICAL C
The
G
denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= 25
°
C.
Commercial Grade 0
°
C to 70
°
C. V
IN
= 1.1V, V
SHDN
= V
IN
, unless otherwise noted.
HARA TERISTICS
The
G
denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= 25
°
C.
Industrial Grade –40
°
C to 85
°
C. V
IN
= 1.2V, V
SHDN
= V
IN
, unless otherwise noted.
SYMBOL
I
Q
PARAMETER
Quiescent Current
CONDITIONS
Not Switching, LT1308A
Switching, LT1308B
V
SHDN
= 0V (LT1308A/LT1308B)
MIN
TYP
140
2.5
0.01
1.22
27
0.05
0.01
0.92
60
100
600
90
3
290
330
400
MAX
240
4
1
1.25
80
0.4
0.2
1
UNITS
G
G
G
μ
A
mA
μ
A
V
FB
I
B
Feedback Voltage
FB Pin Bias Current
Reference Line Regulation
G
1.19
V
(Note 3)
1.1V
≤
V
IN
≤
2V
2V
≤
V
IN
≤
10V
G
nA
G
G
%/V
%/V
Minimum Input Voltage
Error Amp Transconductance
Error Amp Voltage Gain
Switching Frequency
Maximum Duty Cycle
Switch Current Limit
Switch V
CESAT
V
g
m
A
V
f
OSC
I = 5
μ
A
μ
mhos
V/V
kHz
G
500
82
2
750
G
%
A
Duty Cyle = 30% (Note 4)
I
SW
= 2A (25
°
C, –40
°
C), V
IN
= 1.5V
I
SW
= 2A (85
°
C), V
IN
= 1.5V
V
IN
= 2.5V, Circuit of Figure 1
4.5
350
400
mV
mV
mA
Burst Mode Operation Switch Current Limit
(LT1308A)
Shutdown Pin Current
V
SHDN
= 1.1V
V
SHDN
= 6V
V
SHDN
= 0V
G
G
2
20
0.01
200
200
0.1
0.01
33
3000
0.01
5
35
0.1
204
207
0.25
0.1
100
μ
A
μ
A
μ
A
mV
mV
LBI Threshold Voltage
196
193
G
LBO Output Low
LBO Leakage Current
LBI Input Bias Current (Note 5)
Low-Battery Detector Gain
Switch Leakage Current
I
SINK
= 50
μ
A
V
LBI
= 250mV, V
LBO
= 5V
V
LBI
= 150mV
G
V
G
μ
A
nA
V/V
μ
A
V
SW
= 5V
G
10
SYMBOL
PARAMETER
Shutdown Pin Current
CONDITIONS
V
SHDN
= 1.1V
V
SHDN
= 6V
V
SHDN
= 0V
MIN
TYP
2
20
0.01
200
200
0.1
0.01
33
3000
0.01
MAX
5
35
0.1
204
206
0.25
0.1
100
UNITS
G
G
G
μ
A
μ
A
μ
A
mV
mV
LBI Threshold Voltage
196
194
G
LBO Output Low
LBO Leakage Current
LBI Input Bias Current (Note 5)
Low-Battery Detector Gain
Switch Leakage Current
I
SINK
= 50
μ
A
V
LBI
= 250mV, V
LBO
= 5V
V
LBI
= 150mV
G
V
G
μ
A
nA
V/V
μ
A
V
SW
= 5V
G
10
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