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LT3995HMSE#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
LT3995
4
3995f
For more information www.linear.com/LT3995
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency at 3.3V
OUT
No-Load Supply Current No-Load Supply Current
Reference Voltage
Efficiency at 5V
OUT
Efficiency at 3.3V
OUT
Efficiency at 5V
OUT
Load Regulation Line Regulation
T
A
= 25°C, unless otherwise noted.
LOAD CURRENT (A)
0
50
EFFICIENCY (%)
60
70
80
0.5
1
1.5 2
3995 G01
2.5
90
100
55
65
75
85
95
3
12V
24V
36V
48V
L: MSS1260-682ML
f
SW
= 500kHz
LOAD CURRENT (A)
0
40
EFFICIENCY (%)
50
60
70
0.5
1
1.5 2
3995 G02
2.5
80
90
45
55
65
75
85
3
12V
24V
36V
48V
L: MSS1260-822ML
f
SW
= 300kHz
LOAD CURRENT (mA)
0.01
0
EFFICIENCY (%)
20
40
60
0.1
1
10 100
3995 G03
1000
80
100
10
30
50
70
90
10000
12V
24V
36V
48V
L: MSS1260-682ML
f
SW
= 500kHz
LOAD CURRENT (mA)
0.01
0
EFFICIENCY (%)
20
40
60
0.1
1
10 100
3995 G04
1000
80
100
10
30
50
70
90
10000
12V
24V
36V
48V
L: MSS1260-822ML
f
SW
= 300kHz
INPUT VOLTAGE (V)
0
1.0
INPUT CURRENT (µA)
1.5
2.5
3.0
3.5
30 35 40 5045 55
4.5
3995 G05
2.0
5 10 15 20 25 60
4.0
IN REGULATION
V
OUT
= 3.3V
TEMPERATURE (°C)
10
INPUT CURRENT (µA)
1000
10000
–55 65 125
3975 G06
1
5–25 95 15535
100
FRONT PAGE APPLICATION
V
IN
= 12V
V
OUT
= 3.3V
DUE TO CATCH
DIODE LEAKAGE
TEMPERATURE (°C)
–55
REFERENCE VOLTAGE (V)
1.190
1.220
1.225
1.230
5
65
95
3995 G07
1.180
1.175
1.210
1.200
1.185
1.215
1.170
1.205
1.195
–25
35
125
155
LOAD CURRENT (A)
0
CHANGE IN V
OUT
(%)
0
3995 G08
–0.10
–0.20
1 2
0.5
1.5 2.5
0.10
0.20
–0.05
–0.15
0.05
0.15
3
V
IN
= 12V
V
OUT
= 5V
INPUT VOLAGE (V)
–0.15
CHANGE IN V
OUT
(%)
–0.05
0.05
0.15
–0.10
0
0.10
15 3025 40 50
3995 G09
60105 20 35 45 55
V
OUT
= 5V
LOAD = 1A
LT3995
5
3995f
For more information www.linear.com/LT3995
TYPICAL PERFORMANCE CHARACTERISTICS
Switch Current Limit
Switch Current Limit Current Limit Foldback Soft-Start
Switch V
CESAT
BOOST Pin Current
Thermal Derating Thermal Derating
T
A
= 25°C, unless otherwise noted.
Minimum On-Time
DUTY CYCLE
0
4.0
CURRENT LIMIT (A)
4.5
5.0
5.5
6.0
6.5
7.0
0.2 0.4 0.6 0.8
3995 G11
1.0
TEMPERATURE (°C)
–55
CURRENT LIMIT (A)
6.0
6.5
7.0
35 95
3995 G12
5.5
5.0
–25 5
65 125 155
4.5
4.0
30% DUTY CYCLE
FB PIN VOLTAGE (V)
0
7
6
5
4
3
2
1
0
0.6 1.0
3995 G13
0.2 0.4
0.8 1.2
CURRENT LIMIT (A)
30% DUTY CYCLE
V
SS
= 3V
SS PIN VOLTAGE (V)
0
5
6
7
2
3995 G14
4
3
0.5 1 1.5 2.5
2
1
0
CURRENT LIMIT (A)
V
FB
= 1V
30% DUTY CYCLE
V
FB
= 0.2V
SWITCH CURRENT (A)
0
0
SWITCH DROP (mV)
50
100
150
200
300
0.5
1 1.5 2
3995 G15
2.5 3
250
SWITCH CURRENT (A)
0
70
60
50
40
30
20
10
0
1.5 2.5
3995 G16
0.5 1
2 3
BOOST PIN CURRENT (mA)
TEMPERATURE (°C)
–55
MINIMUM ON-TIME (ns)
175
200
225
35 95
3995 G17
150
125
–25 5
65 125 155
100
75
LOAD = 2A
LOAD = 1A
V
SYNC
= 0V
f
SW
= 2MHz
TEMPERATURE (°C)
0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
75 125
3995 G10
25 50
100 150
LOAD CURRENT (A)
V
OUT
= 3.3V
f
SW
= 300kHz
2.5in × 2.5in 4-LAYER BOARD
LIMITED BY MAXIMUM JUNCTION
TEMPERATURE θ
JA
= 40°C/W
12V
IN
24V
IN
36V
IN
48V
IN
60V
IN
H-GRADE
TEMPERATURE (°C)
0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
75 125
3995 G38
25 50
100 150
LOAD CURRENT (A)
V
OUT
= 5V
f
SW
= 500kHz
2.5in × 2.5in 4-LAYER BOARD
LIMITED BY MAXIMUM JUNCTION
TEMPERATURE θ
JA
= 40°C/W
12V
IN
24V
IN
36V
IN
48V
IN
60V
IN
H-GRADE
LT3995
6
3995f
For more information www.linear.com/LT3995
TYPICAL PERFORMANCE CHARACTERISTICS
Switching Frequency
R
T
Programmed Switching
Frequency
Frequency Foldback
Internal Undervoltage Lockout
(UVLO) EN Threshold
PG Thresholds
Minimum Input Voltage,
V
OUT
= 5V
Minimum Input Voltage,
V
OUT
= 3.3V
T
A
= 25°C, unless otherwise noted.
TEMPERATURE (°C)
–55
SWITCHING FREQUENCY (kHz)
660
720
780
35 95
3995 G19
600
540
–25 5
65 125 155
480
420
R
T
= 78.7k
SWITCHING FREQUENCY (MHz)
0.2
0
R
T
RESISTOR (kΩ)
50
150
200
250
350
0.4
1.2
1.6
3995 G20
100
300
1.0
2.0
2.2
0.6
0.8
1.4 1.8
FB PIN VOLTAGE (V)
0
700
600
500
400
300
200
100
0
0.6 1
3995 G21
0.2 0.4
0.8 1.2
SWITCHING FREQUENCY (kHz)
R
T
= 78.7k
TEMPERATURE (°C)
–55
INPUT VOLTAGE (V)
4
5
6
35 95
3995 G22
3
2
–25 5
65 125 155
1
0
TEMPERATURE (°C)
–55
EN THRESHOLD (V)
1.08
35
3995 G23
1.05
1.03
–25 5 65
1.02
1.01
1.09
1.07
1.06
1.04
95 125 155
EN RISING
EN FALLING
TEMPERATURE (°C)
–55
PG THRESHOLD (V)
1.11
35
3995 G24
1.08
1.06
–25 5 65
1.05
1.04
1.12
1.10
1.09
1.07
95 125 155
FB RISING
FB FALLING
LOAD CURRENT (A)
0
4.0
INPUT VOLTAGE (V)
4.5
5.0
5.5
6.0
6.5
0.5
1.0 1.5 2.0
3995 G25
2.5 3.0
V
OUT
= 5V
f
SW
= 500kHz
TO RUN/TO START
LOAD CURRENT (A)
0
2.5
INPUT VOLTAGE (V)
3.0
3.5
4.0
4.5
5.0
0.5
1.0 1.5 2.0
3995 G26
2.5 3.0
V
OUT
= 3.3V
FRONT PAGE APPLICATION
TO RUN/TO START
Minimum Off-Time
TEMPERATURE (°C)
–55
MINIMUM OFF-TIME (ns)
200
225
250
35 95
3995 G18
175
150
–25 5
65 125 155
125
100
LOAD = 2A
LOAD = 1A
V
SYNC
= 0V
f
SW
= 2MHz
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

LT3995HMSE#PBF

Mfr. #:
Buy LT3995HMSE#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 60V, 3A, 2MHz Step-Down Switching Regulator with 2.7 A Quiescent Current
Lifecycle:
New from this manufacturer.
Delivery:
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