LT1085-12(RevB) Просмотр технического описания (PDF) - Linear Technology
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LT1085-12 Datasheet PDF : 12 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
LT1083/84/85 Fixed
LT1084 Dropout Voltage
2
INDICATES GUARANTEED TEST POINT
–55°C ≤ TJ ≤ 150°C
0°C ≤ TJ ≤ 125°C
1
TJ = –55°C
TJ = 150°C TJ = 25°C
0
0
1
2
3
4
5
6
OUTPUT CURRENT (A)
LT1083/4/5 FIXEDG04
LT1085 Dropout Voltage
2
INDICATES GUARANTEED TEST POINT
–55°C ≤ TJ ≤ 150°C
0°C ≤ TJ ≤ 125°C
1
TJ = 25°C
TJ = 150°C
TJ = –55°C
0
0
1
2
3
4
OUTPUT CURRENT (A)
LT1083/4/5 FIXED G07
LT1083/4/5-5 Ripple Rejection
80
VRIPPLE ≤ 3VP-P
VRIPPLE
70
≤ 0.5VP-P
60
(VIN – VOUT) ≥ 3V
50
(VIN – VOUT) ≥ VDROPOUT
40
30
20
IOUT = IFULL LOAD
10
0
10
100
1k
10k
100k
FREQUENCY (Hz)
1083/4/5 FIXED G10
LT1084 Short Circuit Current
10
9
8
7
150°C
6
25°C
5
4
–55°C
3
2
1
IFULL LOAD
GUARANTEED
0
0 5 10 15 20 25 30 35
INPUT/OUTPUT DIFFERENTIAL (V)
LT1083/4/5 FIXED G05
LT1085 Short-Circuit Current
6
5
4
25°C
150°C
3
–55°C
2
IFULL LOAD
GUARANTEED
1
0
05
10 15 20 25 30 35
INPUT/OUTPUT DIFFERENTIAL (V)
LT1083/4/5 FIXED G08
LT1083/4/5-5 Ripple Rejection
vs Current
100
90
80
70
60 fR = 20kHz
VRIPPLE ≤ 0.5VP-P
50
fR = 120Hz
VRIPPLE ≤ 3VP-P
40
30
20
10
0
0
0.2 0.4
0.6 0.8
1.0
OUTPUT CURRENT (0 TO IFULL LOAD)
1083/4/5 FIXED G11
LT1084 Load Regulation
0.10
∆I = 5A
0.05
0
–0.05
–0.10
–0.15
–0.20
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
LT1083/4/5 FIXED G06
LT1085 Load Regulation
0.10
∆I = 3A
0.05
0
–0.05
–0.10
–0.15
–0.20
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
LT1083/4/5 FIXED G09
Temperature Stability
2.0
1.0
0
–1.0
–2.0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
LT1183/4/5 FIXED G12
5
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