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LT3682IDD#TRPBF
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
L
T3682
4
3682f
TYPICAL PERFORMANCE CHARACTERISTICS
LOAD CURRENT (mA)
0.1
EFFICIENCY (%)
60
70
40
50
80
1000
3682 G01
30
10
20
1
10
100
90
V
IN
= 12V
V
IN
= 34V
V
IN
= 24V
L = 10µH
f = 800kHz
LOAD CURRENT (mA)
EFFICIENCY (%)
3682 G02
0.1
60
70
40
50
80
1000
30
10
20
1
10
100
90
V
IN
= 12V
V
IN
= 34V
V
IN
= 24V
L = 10µH
f = 800kHz
LOAD CURRENT (mA)
0.1
EFFICIENCY (%)
POWER LOSS(W)
70
60
80
90
1000
3682 G03
20
30
40
50
10
1
10
100
100
0.1
0.01
0.001
1
V
IN
= 12V
V
OUT
= 3.3V
L = 10µH
f = 800kHz
INPUT VOL
T
AGE(V)
0
SUPPL
Y CURRENT (µA)
80
60
100
40
3682 G04
20
40
0
5
10
15
20
30
35
25
120
V
OUT
= 3.3V
TEMPERA
TURE(°C)
50
SUPPL
Y CURRENT (µA)
700
600
500
800
900
3682 G05
400
300
200
100
0
25
0
25
50
100
125
75
1000
CA
TCH DIODE: DIODES, INC. B150
V
IN
= 12V
V
OUT
= 3.3V
INCREASED SUPPL
Y CURRENT
DUE TO CA
TCH DIODE LEAKAGE
A
T HIGH TEMPERA
TURE
INPUT VOL
T
AGE (V)
05
LOAD CURRENT (A)
1.25
1
0.75
1.5
40
3682 G06
0.5
0.25
10
15
20
30
35
25
1.75
T
YPICAL
MINIMUM
V
OUT
= 3.3V
L = 10µH
f = 800kHz
SYNC = 0V
SYNC = 3.3V
INPUT VOL
T
AGE (V)
5
LOAD CURRENT (A)
1
0.75
1.25
40
3682 G07
0.5
0.25
10
15
20
30
35
25
1.5
T
YPICAL
MINIMUM
V
OUT
= 5V
L = 10µH
f = 800kHz
SYNC = 0V
SYNC = 5V
INPUT VOL
T
AGE (V)
8
LOAD CURRENT (A)
1
1.25
20
3682 G08
0.5
0.75
0.25
10
12
14
16
18
1.5
T
YPICAL
MINIMUM
V
OUT
= 5V
L = 4.7µH
f = 2MHz
SYNC = 0V
SYNC = 5V
INPUT VOL
T
AGE (V)
0
LOAD CURRENT (A)
1.5
1.25
1.75
40
3682 G09
1
0.75
0.50
0.25
5
10
15
20
30
35
25
T
YPICAL
MINIMUM
V
OUT
= 1.8V
L = 10µH
f = 500kHz
SYNC = 0V
SYNC = 3.3V
No Load Supply Current
No Load Supply Current
Maximum Load Current
Maximum Load Current
Maximum Load Current
Maximum Load Current
Effi
ciency (V
OUT
= 5V
, SYNC = 0V)
Effi
ciency (V
OUT
= 3.3V
, SYNC = 0V)
Effi
ciency (V
OUT
= 3.3V
, SYNC = 0V)
T
A
= 25°C, unless other
wise noted.
L
T3682
5
3682f
DUT
Y 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
TEMPERA
TURE (°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
100
50
1.9
DC = 90%
DC = 10%
SWITCH CURRENT (A)
0
VOL
T
AGE 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
TEMPERA
TURE(°C)
50
FEEDBACK VOL
T
AGE (mV)
800
3682 G14
790
780
770
25
0
25
50
100
125
75
810
TEMPERA
TURE(°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
125
75
1.20
R
RT
= 29.4k
FB PIN VOL
T
AGE (mV)
0
FREQUENCY (kHz)
1000
900
3682 G16
800
600
400
200
0
100
200
300
400
600
700
800
500
1200
R
RT
= 29.4k
TEMPERA
TURE (°C)
MINIMUM SWITCH ON TIME (ns)
100
80
120
3682 G17
40
20
60
0
50
25
0
25
50
100
125
75
RUN/SS PIN VOL
T
AGE (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
3
2.5
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 other
wise noted.
L
T3682
6
3682f
RUN/SS PIN VOL
T
AGE (V)
0
RUN/SS PIN CURRENT (µA)
10
8
35
40
3682 G19
4
2
6
0
5
10
15
20
30
25
12
BOOST DIODE CURRENT (A)
0
BOOST DIODE
V
f
(V)
1
0.8
1.2
1
3682 G20
0.4
0.2
0.6
0
0.25
0.5
0.75
1.4
FB PIN ERROR VOL
T
AGE (mV)
200
V
C
PIN CURRENT (µA)
0
10
20
30
10
40
50
200
3682 G21
40
30
50
20
60
100
0
100
60
LOAD CURRENT (mA)
1
INPUT VOL
T
AGE (V)
4
3.5
4.5
1000
3682 G22
2.5
3
2
10
100
5
V
OUT
= 3.3V
L = 10µH
f = 800kHz
LOAD CURRENT (mA)
1
INPUT VOL
T
AGE (V)
5.5
5
6
1000
3682 G23
4.5
4
10
100
6.5
V
OUT
= 5V
L = 10µH
f = 800kHz
LOAD CURRENT(A)
0
V
IN
(V)
30
35
1
3682 G24
20
25
15
10
5
0.1
0.2
0.3
0.4
0.5
0.7
0.9
0.8
0.6
40
T
A
= 85˚C
T
A
= 25˚C
V
OUT
= 3.3V
L = 10µH
f = 800kHz
SYNC = 3.3V
LOAD CURRENT(A)
V
IN
(V)
3682 G25
0
30
35
1
20
25
15
10
5
0.1
0.2
0.3
0.4
0.5
0.7
0.9
0.8
0.6
40
T
A
= 85˚C
T
A
= 25˚C
V
OUT
= 5V
L = 10µH
f = 800kHz
SYNC = 5V
LOAD CURRENT(A)
V
IN
(V)
3682 G26
0
30
35
1
20
25
15
10
5
0.1
0.2
0.3
0.4
0.5
0.7
0.9
0.8
0.6
40
T
A
= 85˚C
T
A
= 25˚C
V
OUT
= 5V
L = 4.7µH
f = 2MHz
SYNC =5V
TEMPERA
TURE(°C)
V
C
VOL
T
AGE (V)
1.5
1
2
3682 G27
0.5
0
2.5
50
25
0
25
50
100
125
75
SWITCHING THRESHOLD
CURRENT LIMIT CLAMP
Minimum Input Voltage
Minimum Input Voltage
Maximum V
IN
for Full Frequency
Maximum V
IN
for Full Frequency
Maximum V
IN
for Full Frequency
V
C
Voltages
RUN/SS Pin Current
Boost Diode For
ward Voltage
Error Amplifi
er Output Current
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C, unless other
wise noted.
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
LT3682IDD#TRPBF
Mfr. #:
Buy LT3682IDD#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 1A uP Buck Sw Reg
Lifecycle:
New from this manufacturer.
Delivery:
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