參數(shù)資料
型號(hào): LT1308ACF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: High Current, Micropower Single Cell, 600kHz DC/DC Converters
中文描述: 4.5 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, PDSO14
封裝: 4.40 MM, PLASTIC, TSSOP-14
文件頁(yè)數(shù): 2/12頁(yè)
文件大小: 185K
代理商: LT1308ACF
2
LT1308A/LT1308B
A
V
IN
, SHDN, LBO Voltage......................................... 10V
SW Voltage............................................... –0.4V to 36V
FB Voltage ....................................................... V
IN
+ 1V
V
C
Voltage................................................................ 2V
LBI Voltage................................................. –0.1V to 1V
Current into FB Pin..............................................
±
1mA
U
G
W
A
W
U
W
A
R
BSOLUTE
XI
TI
S
ORDER PART
NUMBER
W
U
U
PACKAGE/ORDER I FOR ATIO
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
(Note 1)
S8 PART MARKING
LT1308ACS8
LT1308AIS8
LT1308BCS8
LT1308BIS8
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
0.03
0.01
0.92
60
100
600
90
3
290
330
400
MAX
240
4
1
1.24
80
0.4
0.2
1
UNITS
μ
A
mA
μ
A
V
FB
I
B
Feedback Voltage
FB Pin Bias Current
Reference Line Regulation
G
1.20
V
(Note 3)
1.1V
V
IN
2V
2V
V
IN
10V
G
nA
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
V
IN
= 1.2V
G
500
82
2
700
G
%
A
Duty Cyle = 30% (Note 4)
I
SW
= 2A (25
°
C, 0
°
C), V
IN
= 1.5V
I
SW
= 2A (70
°
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)
T
JMAX
= 125
°
C,
θ
JA
= 80
°
C/W
1308B
1308BI
1308A
1308AI
Consult factory for Military grade parts.
1
2
3
4
8
7
6
5
TOP VIEW
LBO
LBI
V
IN
SW
V
C
FB
SHDN
GND
S8 PACKAGE
8-LEAD PLASTIC SO
Operating Temperature Range
Commercial............................................ 0
°
C to 70
°
C
Extended Commerial (Note 2) ........... –40
°
C to 85
°
C
Industrial........................................... –40
°
C to 85
°
C
Storage Temperature Range................ –65
°
C to 150
°
C
Lead Temperature (Soldering, 10 sec)................. 300
°
C
ORDER PART
NUMBER
LT1308ACF
LT1308BCF
T
JMAX
= 125
°
C,
θ
JA
= 80
°
C/W
F PACKAGE
14-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
TOP VIEW
14
13
12
11
10
9
8
V
C
FB
SHDN
GND
GND
GND
GND
LBO
LBI
V
IN
V
IN
SW
SW
SW
(Note 6)
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