LT3741/LT3741-1
4
37411ff
For more information www.linear.com/LT3741
TYPICAL PERFORMANCE CHARACTERISTICS
EN/UVLO Threshold (Falling) EN/UVLO Pin Current
I
Q
in Shutdown
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 12V, V
EN/UVLO
= 5V, V
SYNC
= 0V unless otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Current Control Loop g
m
Amp
Offset Voltage V
CM
=4V
l
–3 0 3 mV
Input Common Mode Range
V
CM(LOW)
V
CM(HIGH)
V
CM(HIGH)
Measured from V
IN
to V
CM
0
2
V
V
Output Impedance 3.5
g
m
375 475 625 µA/V
Differential Gain 1.7 V/mV
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3741E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3741I is guaranteed to meet performance specifications over the –40°C
to 125°C operating junction temperature range.
Note 3: The minimum on, off, and nonoverlap times are guaranteed by
design and are not tested.
V
IN
(V)
6
EN/UVLO THRESHOLD (V)
1.58
1.64
1.70
30
–50°C
130°C
3741 G01
1.52
1.46
1.40
12
18
24
36
V
IN
(V)
6
EN/UVLO PIN CURRENT (µA)
6
8
10
30
3741 G02
4
2
0
12
18
24
36
25°C
130°C
–50°C
V
IN
(V)
0
I
Q
(µA)
0.3
0.4
0.5
32
3741 G03
0.2
0.1
0
8
16
24
40
130°C
25°C
Quiescent Current (Non-Switching)
V
IN
(V)
6
QUIESCENT CURRENT (mA)
1.2
1.6
2.0
30
3741 G04
0.8
0.4
0
12
18
24
36
T
A
= 25°C
T
A
= 130°C
T
A
= –50°C
LT3741/LT3741-1
5
37411ff
For more information www.linear.com/LT3741
TYPICAL PERFORMANCE CHARACTERISTICS
V
REF
Pin Voltage V
REF
Current Limit
TEMPERATURE (°C)
–50
REF
2.00
2.01
2.05
2.04
2.03
2.02
90
1.99
1.98
–15
20
55
V
IN
= 36V
V
IN
= 6V
V
IN
(V)
6
I
LIMIT
(mA)
1.2
1.4
1.6
30
3741 G06
1.0
0.8
12
18
24
36
T
A
= 25°C
T
A
= 130°C
T
A
= –50°C
RT Pin Current Limit
Soft-Start Pin Current
TEMPERATURE (°C)
–50
I
LIMIT
(µA)
70
80
90
90
3741 G08
60
50
40
–15
20
55
125
TEMPERATURE (°C)
–50
I
SS
(µA)
8
9
14
13
12
11
10
90
3741 G09
7
6
–15
20
55
125
V
IN
= 36V
V
IN
= 6V
V
CC_INT
Current Limit
I
LOAD
(mA)
0
V
CC_INT
(V)
4
5
6
50
3741 G07
3
1
2
0
10
20
4030
60
V
IN
= 12V
T
A
= 25°C
V
CC_INT
Load Reg at 12V
CBOOT-SW UVLO Voltage
V
CC_INT
UVLO
TEMPERATURE (°C)
–50
1.50
VOLTAGE (V)
1.75
2.00
2.25
2.50
2.75
3.00
–15 20 55 90
3741 G11
125
TEMPERATURE (°C)
–50
2.50
UVLO (V)
2.75
3.00
3.25
3.50
3.75
4.00
–15 20 55 90
3741 G12
125
I
LOAD
(mA)
0
V
CC_INT
(V)
5.2
5.6
6.0
40
3741 G13
4.8
4.4
4.0
10
20
30
60
50
25°C
Internal UVLO
TEMPERATURE (°C)
–50
V
IN
(V)
4.0
4.5
5.0
90
3741 G10
3.5
3.0
–15
20
55
125
LT3741/LT3741-1
6
37411ff
For more information www.linear.com/LT3741
TYPICAL PERFORMANCE CHARACTERISTICS
Regulated Current vs V
FB
Overvoltage Threshold Overvoltage Timeout
Regulated Sense Voltage Common Mode Lockout
Non-Overlap TimeMinimum Off-Time
HG Driver R
DS(ON)
LG Driver R
DS(ON)
V
FB
(V)
1.10
–150
CONTROL CURRENT (%)
–100
–50
0
50
100
150
1.15 1.251.20 1.30
3741 G14
1.35
LT3741-1
LT3741
TEMPERATURE (°C)
–50
OVERVOLTAGE THRESHOLD (V)
1.35
1.45
1.75
1.65
1.55
100
3741 G15
1.25
–25 0 25
50
75
125
TEMPERATURE (°C)
–50
OVERVOLTAGE TIMEOUT (µs)
15
17
19
90
3741 G16
13
11
9
–15
20
55
125
V
CTRL
(V)
0
0
V
SENSE
+
– V
SENSE
(mV)
10
20
30
40
50
60
0.5 1.0 1.5
3741 G17
2.0
TEMPERATURE (°C)
–50
CM LOCKOUT (V)
1.5
2.0
2.5
90
3741 G18
1.0
0.5
0
–15
20
55
125
V
IN
= 6V
V
IN
= 36V
MEASURED V
IN
– V
OUT
TEMPERATURE (°C)
–50
R
DS(ON)
(Ω)
3
4
5
90
3741 G20
2
1
0
–15
20
55
125
PULL-UP
PULL-DOWN
TEMPERATURE (°C)
–50
R
DS(ON)
(Ω)
3
4
5
90
3741 G21
2
1
0
–15
20
55
125
PULL-UP
PULL-DOWN
TEMPERATURE (°C)
–50
NON-OVERLAP TIME (ns)
90
120
150
90
3741 G23
60
30
0
–15
20
55
125
HG TO LG
LG TO HG
TEMPERATURE (°C)
–50
MINIMUM OFF-TIME (ns)
180
240
300
90
3741 G25
120
60
0
–15
20
55
125
HG
LG

LT3741EFE#PBF

Mfr. #:
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators High Power Constant Current Constant Voltage, Synchronous Step-Down Controller
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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