LT1965T-1.8(RevA) Ver la hoja de datos (PDF) - Linear Technology
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LT1965T-1.8 Datasheet PDF : 20 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
LT1965 Series
SHDN Pin Input Current
6
5
4
3
2
1
0
0 2 4 6 8 10 12 14 16 18 20
SHDN PIN VOLTAGE (V)
1965 G11
SHDN Pin Input Current
6.0
VSHDN = 20V
5.9
5.8
5.7
5.6
5.5
5.4
5.3
5.2
5.1
5.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1965 G12
ADJ Pin Bias Current
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1965 G13
Current Limit vs VIN – VOUT
2.5
ΔVOUT = 100mV
2.0
1.5
TJ = 125°C
1.0
TJ = –50°C
TJ = 25°C
0.5
0.0
0
2 4 6 8 10 12 14 16 18 20
INPUT/OUTPUT DIFFERENTIAL (V)
1965 G30
Current Limit vs Temperature
3.0
VIN = 7V
VOUT = 0V
2.5
2.0
1.5
1.0
0.5
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1965 G15
Reverse Output Current
6
TJ = 25°C
VIN = 0V
5 VOUT = VADJ (LT1965)
VOUT = VSENSE
(LT1965-1.5/-1.8/-2.5/-3.3)
4 CURRENT FLOWS INTO
OUTPUT PIN
3
LT1965-1.5
LT1965
2
LT1965-1.8
1
LT1965-2.5
LT1965-3.3
0
0123456789
OUTPUT VOLTAGE (V)
1965 G32
Reverse Output Current
0.50
VIN = 0V
0.45 VOUT = 1.2V (LT1965)
0.40
VOUT = 1.5V (LT1965-1.5)
VOUT = 1.8V (LT1965-1.8)
0.35 VOUT = 2.5V (LT1965-2.5)
VOUT = 3.3V (LT1965-3.3)
0.30
0.25
LT1965-1.5/-1.8/-2.5/-3.3
0.20
0.15
LT1965
0.10
0.05
0.00
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
1965 G33
Ripple Rejection vs Frequency
90
80
70
60
50
40
30
20 IL = 0.75A
COUT = 10μF CERAMIC
10 VIN = VOUT(NOMINAL)
+ 1V + 50mVRMS RIPPLE
0
10
100
1k
10k
FREQUENCY (Hz)
100k 1M
1965 G34
1965fa
9
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