參數(shù)資料
型號: LT1372CS8
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: Synchronous 4-Bit Up/Down Binary Counters With 3-State Outputs 20-SOIC 0 to 70
中文描述: 2.7 A SWITCHING REGULATOR, 580 kHz SWITCHING FREQ-MAX, PDSO8
封裝: 0.150 INCH, PLASTIC, SO-8
文件頁數(shù): 3/12頁
文件大?。?/td> 274K
代理商: LT1372CS8
3
LT1372/LT1377
SYMBOL
PARAMETER
Maximum Switch Duty Cycle
Switch Current Limit Blanking Time
Output Switch Breakdown Voltage
CONDITIONS
MIN
90
TYP
95
130
47
MAX
UNITS
G
%
ns
V
260
BV
LT1372/LT1377
LT1372HV
0
°
C
T
J
125
°
C
–40
°
C
T
J
< 0
°
C (I Grade)
I
SW
= 1A
Duty Cycle = 50%
Duty Cycle = 80% (Note 1)
G
35
G
42
40
47
V
V
A
A
V
SAT
I
LIM
Output Switch “On” Resistance
Switch Current Limit
G
0.5
1.9
1.7
15
0.8
2.7
2.5
25
G
1.5
1.3
G
I
IN
I
SW
Supply Current Increase During Switch On-Time
mA/A
Control Voltage to Switch Current
Transconductance
Minimum Input Voltage
Supply Current
Shutdown Supply Current
2
A/V
G
2.4
4
2.7
5.5
V
I
Q
2.7V
V
IN
25V
2.7V
V
IN
25V, V
S/S
0.6V
0
°
C
T
J
125
°
C
–40
°
C
T
J
< 0
°
C (I Grade)
2.7V
V
IN
25V
G
mA
G
12
30
50
2
25
15
800
1.6
μ
A
μ
A
V
μ
s
μ
A
kHz
MHz
Shutdown Threshold
Shutdown Delay
S/S Pin Input Current
Synchronization Frequency Range
G
0.6
5
–10
600
1.2
1.3
12
G
0V
V
S/S
5V
LT1372
LT1377
G
G
G
ELECTRICAL C
V
IN
= 5V, V
C
= 0.6V, V
FB
= V
REF
, V
SW
, S/S and NFB pins open, unless otherwise noted.
HARA TERISTICS
Switch Saturation Voltage
vs Switch Current
TEMPERATURE (
°
C)
–50
1.8
I
2.0
2.2
2.4
2.6
0
50
100
150
LT1372 G03
2.8
3.0
–25
25
75
125
Minimum Input Voltage
vs Temperature
DUTY CYCLE (%)
0
S
1.0
2.0
3.0
0.5
1.5
2.5
20
40
60
80
LT1372 G02
100
10
0
30
50
70
90
25
°
C AND
125
°
C
–55
°
C
Switch Current Limit
vs Duty Cycle
TYPICAL PERFOR
M
A
N
CE CHARACTERISTICS
SWITCH CURRENT (A)
0
S
0.6
0.8
1.0
1.6
LT1372 G01
0.4
0.2
0.5
0.7
0.9
0.3
0.1
0
0.4
0.8
1.2
2.0
1.4
0.2
0.6
1.0
1.8
100
°
C
150
°
C
25
°
C
–55
°
C
The
G
denotes specifications which apply over the full operating
temperature range.
Note 1:
For duty cycles (DC) between 50% and 90%, minimum
guaranteed switch current is given by I
LIM
= 0.667 (2.75 – DC).
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