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參數(shù)資料
| 型號： | 522965F |
| 英文描述： | IC-SWITCHING REGULATOR |
| 中文描述： | 集成電路開關(guān)穩(wěn)壓器 |
| 文件頁數(shù)： | 4/12頁 |
| 文件大?。?/td> | 287K |
| 代理商： | 522965F |
4
LT1175
TYPICAL PERFOR
M
A
CE CHARACTERISTICS
U
Typical Current Limit
Characteristics
INPUT-TO-OUTPUT DIFFERENTIAL VOLTAGE (V)
0
C
0.6
0.5
0.4
0.3
0.2
0.1
0
5
10
15
20
1175 G02
25
CURVES REPRE-
SENT MINIMUM
GUARANTEED
LIMITS AT ALL
TEMPERATURES
I
LIM2
, I
LIM4
OPEN
I
LIM4
TIED TO V
IN
I
LIM2
TIED TO V
IN
I
LIM2
, I
LIM
TIED TO V
IN
Guaranteed Current Limit
JUNCTION TEMPERATURE (
°
C)
–50
V
5.05
5.00
4.95
3.84
3.80
3.76
0
50
75
1175 G03
–25
25
100
125
OUTPUT
FIXED 5V PART
FEEDBACK VOLTAGE
ADJUSTABLE PART
Output Voltage Temperature Drift
Minimum Input-to-Output Voltage
OUTPUT CURRENT (A)
0
I
1.0
0.8
0.6
0.4
0.2
0
0.2
0.4
0.5
1175 G04
0.1
0.3
0.6
0.7
T
J
= 25
°
C
V
REDUCED
UNTIL OUTPUT
VOLTAGE
DROPS 1%
I
LIM2
, I
OPEN
I
, I
TIED TO V
IN
I
TIED
TO V
IN
I
LIM2
TIED
IN
Minimum Input-to-Output Voltage
TEMPERATURE (
°
C)
–50
C
100
80
60
40
20
0
0
50
75
1175 G06
–25
25
100
125
OUTPUT CURRENT (A)
0
I
1.0
0.8
0.6
0.4
0.2
0
0.2
0.4
0.5
1175 G05
0.1
0.3
0.6
0.7
V
REDUCED UNTIL OUTPUT
VOLTAGE DROPS 1%.
I
LIM2
, I
LIM4
TIED TO V
IN
T
J
= 125
°
C
T
J
= –55
°
C
T
J
= 25
°
C
Sense Bias Current
(Adjustable Part)
Shutdown Thresholds
Shutdown Input Current
Shutdown Pin Characteristics
SHUTDOWN TO GROUND VOLTAGE (V)
–25 –20
–10
0
P
μ
A
15
10
5
0
–5
–10
15
1175 G09
–15
–5
10
20
5
25
V
= 25V
CHARACTERISTICS DO NOT
CHANGE SIGNIFICANTLY WITH
TEMPERATURE, SO A SINGLE
CURVE IS SHOWN. POSITIVE
CURRENT FLOWS INTO
SHDN PIN
IF SHDN PIN IS NEGATIVE WITH
RESPECT TO INPUT VOLTAGE AND
INPUT VOLTAGE IS LESS THAN 15V,
NEGATIVE BREAKOVER POINT WILL
BE ABOUT 8V BELOW –V
IN
INPUT-TO-OUTPUT DIFFERENTIAL VOLTAGE (V)
0
C
1.0
0.8
0.6
0.4
0.2
0
20
1175 G01
5
10
15
25
I
LIM2
, I
LIM
TIED TO V
IN
I
LIM2
, I
LIM4
OPEN
I
LIM4
TIED TO V
IN
I
LIM2
TIED TO V
IN
CURRENT LIMIT CHANGES ONLY SLIGHTLY
WITH TEMPERATURE SO CURVES ARE
REPRESENTATIVE OF ALL TEMPERATURES
TEMPERATURE (
°
C)
–50
T
2.5
2.0
1.5
1.0
0.5
0
0
50
25
75
1175 G08
–25
100
125
POSITIVE THRESHOLD
NEGATIVE THRESHOLD
DEVICE IS OFF
BELOW THRESHOLD
INPUT VOLTAGE (V)
0
I
μ
A
25
20
15
10
5
0
20
1175 G07
5
10
15
25
T
J
= 125
°
C
T
J
= –55
°
C
T
J
= 25
°
C
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