參數資料
型號: 522978G
英文描述: IC-SWITCHING REGULATOR
中文描述: 集成電路開關穩(wěn)壓器
文件頁數: 4/16頁
文件大?。?/td> 292K
代理商: 522978G
4
LT1185
C
HARA TERISTICS
U
A
TYPICAL PERFOR
CE
Internal Current Limit
Feedback Pin Voltage
Temperature Drift
Ground Pin Current
LOAD CURRENT (A)
0
C
80
100
120
4
LT1185 TPC04
60
40
0
1
2
3
20
160
140
T
J
= 25°C
REGULATOR JUST AT
DROPOUT POINT
V
IN
– V
OUT
= 5V
Load Transient Response
Output Impedance
Quiescent Ground Pin Current*
JUNCTION TEMPERATURE (°C)
–50
V
2.37
2.38
2.39
150
LT1185 TPC03
2.36
2.35
2.33
0
50
100
2.34
2.41
2.40
–25
25
75
125
TIME (
μ
s)
0
4
8
10
LT1185 TPC06
2
6
12
14
16
0.1A t
r
,
f
100ns
C
OUT
= 2.2
μ
F, ESR = 1
C
OUT
= 2.2
μ
F, ESR = 2
V
OUT
= 5V
I
OUT
= 1A
100mV
I
LOAD
FREQUENCY (Hz)
0.01
I
)
0.1
1
10
1M
10k
100k
LT1183 TPC07
0.001
1k
OUTPUT IMPEDANCE IS
SET BY OUTPUT CAPACITOR
ESR IN THIS REGION
V
OUT
= 5V
I
OUT
= 1A
C
OUT
= 2.2
μ
F
FREQUENCY (Hz)
–20
R
O
/
I
–40
–60
–80
–100
100
10k
100k
1M
LT1185 TPC05
0
1k
ALL OUTPUT
VOLTAGES
WITH 0.05
μ
F
ACROSS R2
V
OUT
= 5V
V
IN
– V
OUT
= 1.5V
Ripple Rejection vs Frequency
INPUT-OUTPUT DIFFERENTIAL (V)
0
0
O
1
2
3
5
10
15
20
LT1185 TPC01
25
4
5
30
TYPICAL
TEST POINTS
GUARANTEED
LIMIT
GUARANTEED
LIMIT
INPUT VOLTAGE (V)
0
G
8
10
12
15
25
LT1185 TPC02
6
4
5
10
20
30
35
2
0
V
OUT
= 5V
*DOES NOT INCLUDE REF CURRENT
OR OUTPUT DIVIDER CURRENT
I
LOAD
= 0
T
J
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