LT3480IDD-PBF View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT3480IDD-PBF
Linear Technology
LT3480IDD-PBF Datasheet PDF : 24 Pages
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LT3480
TYPICAL PERFORMANCE CHARACTERISTICS
Soft-Start
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0 0.5 1 1.5 2 2.5 3 3.5
RUN/SS PIN VOLTAGE (V)
3480 G16
Error Amp Output Current
50
40
30
20
10
0
–10
–20
–30
–40
–50
–200
–100
0
100
FB PIN ERROR VOLTAGE (V)
200
3480 G19
VC Voltages
2.50
2.00
CURRENT LIMIT CLAMP
1.50
1.00
SWITCHING THRESHOLD
0.50
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3480 G22
RUN/SS Pin Current
12
10
8
6
4
2
0
0 5 10 15 20 25 30 35
RUN/SS PIN VOLTAGE (V)
3480 G17
Minimum Input Voltage
5.0
4.5
4.0
3.5
3.0
VOUT = 3.3V
2.5 TA = 25°C
L = 4.7µH
f = 800kHz
2.0
1
10
100
1000
LOAD CURRENT (A)
10000
3480 G20
Power Good Threshold
95
Boost Diode
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
0.5
1.0
1.5
2.0
BOOST DIODE CURRENT (A)
3480 G18
Minimum Input Voltage
6.5
6.0
5.5
5.0
VOUT = 5V
4.5 TA = 25 °C
L = 4.7µH
f = 800kHz
4.0
1
10
100
1000
LOAD CURRENT (A)
10000
3480 G21
Switching Waveforms; Burst Mode
90
VSW
5V/DIV
85
IL
0.2A/DIV
80
VOUT
10mV/DIV
75
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3480 G23
5µs/DIV
VIN = 12V; FRONT PAGE APPLICATION
ILOAD = 10mA
3480 G24
3480fe
6
For more information www.linear.com/LT3480
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