Datasheet

LT3682
5
3682f
DUTY CYCLE (%)
0
SWITCH CURRENT LIMIT (A)
1.3
1.1
1.5
1.7
100
3682 G10
0.7
0.9
0.5
20
40
60 80
1.9
SYNC < 0.3V
SYNC > 0.8V
OR CLOCKED
TEMPERATURE (°C)
50
SWITCH CURRENT LIMIT (A)
1.3
1.1
0.9
1.7
1.5
125
3682 G11
0.7
0.5
25
0
25 75 10050
1.9
DC = 90%
DC = 10%
SWITCH CURRENT (A)
0
VOLTAGE DROP (mV)
400
500
300
600
1.25
3682 G12
100
200
0
0.25
0.5
0.75 1
700
SWITCH CURRENT (A)
0
BOOST PIN CURRENT (mA)
20
25
15
10
30
1.25
3682 G13
5
0
0.25
0.5
0.75 1
35
TEMPERATURE(°C)
50
FEEDBACK VOLTAGE (mV)
800
3682 G14
790
780
770
25
0 25 50 100 12575
810
TEMPERATURE(°C)
50
FREQUENCY (MHz)
1.05
1.10
1.15
3682 G15
1
0.95
0.90
0.85
0.80
25
0 25 50 100 12575
1.20
R
RT
= 29.4k
FB PIN VOLTAGE (mV)
0
FREQUENCY (kHz)
1000
900
3682 G16
800
600
400
200
0
100 200 300 400 600 700 800500
1200
R
RT
= 29.4k
TEMPERATURE (°C)
MINIMUM SWITCH ON TIME (ns)
100
80
120
3682 G17
40
20
60
0
50 25
0 25 50 100 12575
RUN/SS PIN VOLTAGE (V)
0
SWITCH CURRENT LIMIT (A)
1.4
0.8
1
1.2
1.6
1.8
3.5
3682 G18
0.4
0.2
0.6
0
0.5
1 1.5 2 32.5
2
Boost Pin Current Feedback Voltage Switching Frequency
Frequency Foldback Minimum Switch On-Time Soft-Start
Switch Current Limit
Switch Current Limit
(SYNC Pin Grounded) Switch Voltage Drop
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C, unless otherwise noted.