LTC1642AIGN Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Fabricante
LTC1642AIGN Datasheet PDF : 16 Pages
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TYPICAL PERFOR A CE CHARACTERISTICS
FAULT and RESET Pull-Up Current
(IOH) vs VCC
160
140
120
TA = –55°C
100
TA = 25°C
80
60
40
TA = 125°C
20
0
3
6
9
12
15
VCC (V)
1642a G14
Current Limit Threshold Voltage
(Full Foldback) vs Temperature
27.5
FB = 0V
27.0
VCC = 15V
26.5
VCC = 12V
26.0
VCC = 5V
25.5
VCC = 3V
25.0
24.5
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1642a G20
VREF vs VCC
1.232
1.228
TA = 25°C
1.224
1.220
1.216
1.212
1.208
3
6
9
12
15
VCC (V)
1642a G24
FAULT and RESET VOL vs
Temperature
600
IOL = 1.54mA
500
400
VCC = 3V
300
VCC = 5V
200
VCC = 12V
VCC = 15V
100
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1642a G16
Current Limit Threshold Voltage
(Nominal) vs Temperature
57.0
FB = 1V
56.5
56.0
VCC = 15V
55.5
55.0
VCC = 5V
54.5
VCC = 12V
54.0
53.5
–50 –25
VCC = 3V
0 25 50 75
TEMPERATURE (°C)
100 125
1642a G21
ICC vs VCC
20
TA = 25°C
10
0
0
VON = 5V
VON = 0V
25
VCC (V)
50
1642a G25
LTC1642A
FAULT and RESET VOL vs
Temperature
3.5
IOL = 5mA
3.0
2.5
2.0
1.5
1.0
0.5
0
–50 –25
VCC = 3V
VCC = 5V
VCC = 12V
VCC = 15V
0 25 50 75
TEMPERATURE (°C)
100 125
1642a G17
ON Pin Threshold Voltage vs
Temperature
1.40
VCC = 12V
1.36
ON RISING
1.32
1.28
1.24
ON FALLING
1.20
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1642a G22
Reference O/P Impedance
0
–2
TA = 25°C
–4
–6
–8
–10
–12
–14
–16
–18
VCC = 5V
–20
VCC = 12V,
–22
VCC = 3.3V
15V
– 42
0 2.5 5 7.5 10 12.5 15 17.5 20
IREF (mA)
1642a G37
1642af
5
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