LT3694 Просмотр технического описания (PDF) - Linear Technology
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LT3694 Datasheet PDF : 28 Pages
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LT3694/LT3694-1
TYPICAL PERFORMANCE CHARACTERISTICS VIN = 12V, TA = 25°C, unless otherwise noted.
ITRK/SS vs Temperature
4.0
3.5
3.0
2.5
2.0
–50
0
50
100
TEMPERATURE (°C)
150
36941 G10
EN/UVLO Thresholds
vs Temperature
1.4
1.2
UVLO SWITCHING THRESHOLD
1.0
0.8
0.6
BIAS CURRENT
SHUTDOWN THRESHOLD
0.4
0.2
0
–50
0
50
100
150
TEMPERATURE (°C)
36941 G11
Minimum Input Voltage
vs Load Current (VIN to Start)
7.0
VOUT = 5V
fSW = 800kHz
6.5
TO START
6.0
5.5
TO RUN
5.0
4.5
4.0
0.001
0.01
0.1
LOAD CURRENT (A)
1
36941 G12
LDO Current Limit vs Temperature
5
4
3
2
1
0
–1
–2
–3
–4
–5
–50
0
50
100
TEMPERATURE (°C)
150
36941 G13
LDO Current Limit
vs VFB (Foldback)
60
50
40
+150°C
–40°C
30
20
10
0
0
0.2
0.4
0.6
0.8
FEEDBACK VOLTAGE (V)
36941 G14
LDO Minimum VIN to DRV Voltage
vs DRV Current
2.5
2.0
1.5
1.0
0.5
0
0
2
4
6
8
10
DRV CURRENT (mA)
36941 G15
LDO Minimum BIAS to DRV
Voltage vs DRV Current
0.5
VIN = 5V
VBIAS = 4.4V
0.4
10Hz to 100kHz LDO Output Noise
VOUT = 2.5V
IOUT = 0.25A
ZXTCM322
PASS XSTR
0.3
10mV/DIV
0.2
0.1
6
0
0
2
4
6
8
10
DRV CURRENT (mA)
36941 G16
1ms/DIV
36941 G17
36941fb
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