Datasheet

LT3680
5
Rev C
For more information www.analog.com
BOOST DIODE CURRENT (A)
0
BOOST DIODE V
F
(V)
0.8
1.0
1.2
2.0
3680 G18
0.6
0.4
0
0.5 1.0 1.5
0.2
1.4
RUN/SS PIN VOLTAGE (V)
0
SWITCH CURRENT LIMIT (A)
1.5
3680 G16
4
2
0.5 1 2
1
0
7
6
5
3
2.5 3 3.5
FB PIN VOLTAGE (mV)
0
SWITCHING FREQUENCY (kHz)
800
1000
1200
600
3680 G14
600
400
200 400
800
500
100 300
700 900
200
0
TEMPERATURE (°C)
MINIMUM SWITCH ON TIME (ns)
80
100
120
3680 G15
60
40
20
0
140
–50 25–25 0 50 75 100 150125
RUN/SS PIN VOLTAGE (V)
0
RUN/SS PIN CURRENT (µA)
8
10
12
15 25
3680 G17
6
4
5 10
20 30 35
2
0
SWITCH CURRENT (A)
0
BOOST PIN CURRENT (mA)
15
45
60
75
120
3680 G11
30
90
105
0 31 2 4 5
TEMPERATURE (°C)
FEEDBACK VOLTAGE (mV)
800
3680 G12
760
840
780
820
–50 25–25 0 50 75 100 150125
TEMPERATURE (°C)
FREQUENCY (MHz)
1.00
1.10
3680 G13
0.90
0.80
1.20
0.95
1.05
0.85
1.15
–50 25–25 0 50 75 100 150125
SWITCH CURRENT (A)
0
400
500
700
3
3680 G10
300
200
1 2 4 5
100
0
600
VOLTAGE DROP (mV)
Boost Pin Current
Feedback Voltage
Switching Frequency
Frequency Foldback
Minimum Switch On-Time
Soft-Start
RUN/SS Pin Current
Boost Diode
Switch Voltage Drop
T
A
= 25°C unless otherwise noted.
TYPICAL PERFORMANCE CHARACTERISTICS
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.