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LT8610AIMSE-3.3#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P26
LT8610A/LT8610AB Series
7
8610abfa
For more information www.linear.com/LT8610A
Top FET Current Limit vs Duty Cycle Top FET Current Limit Bottom FET Current Limit
DUTY CYCLE
0
CURRENT LIMIT (A)
3.5
4.0
4.5
0.6
1.0
8610ab G13
3.0
0.2 0.4 0.8
5.0
5.5
8.0
7.0
7.5
6.5
6.0
TEMPERATURE (°C)
–55
4.50
CURRENT LIMIT (A)
4.75
5.00
5.25
5.50
5.75
6.00
6.25
6.50
6.75
7.00
–25
5 35 65
8610ab G14
95
125
30% DC
TEMPERATURE (°C)
–55
3.00
CURRENT LIMIT (A)
3.25
3.50
3.75
4.00
5.50
–25
5 35 65
8610ab G15
95
155
125
4.25
4.50
4.75
5.00
5.25
TYPICAL PERFORMANCE CHARACTERISTICS
Minimum On-Time
Minimum Off-Time Dropout Voltage Switching Frequency
Switch Drop Switch Drop
TEMPERATURE (°C)
–55 –25
0
SWITCH DROP (mV)
100
250
5
65
95
8610ab G40
50
200
150
35
125
155
TOP SW
BOT SW
SWITCH CURRENT = 1A
SWITCH CURRENT (A)
0
0
SWITCH DROP (mV)
50
150
200
250
2
450
8610ab G41
100
1
0.5
2.5
1.5
3
300
350
400
TOP SW
BOT SW
TEMPERATURE (°C)
–55
25
27
29
31
MINIMUM ON-TIME (ns)
33
35
37
39
45
5 65 95 125
8610ab G17
43
41
–25 35
155
V
OUT
= 3.3V
V
OUT
= 0.97V
I
LOAD
= 1.5A
V
SYNC
= 0V
TEMPERATURE (°C)
–50
MINIMUM OFF-TIME (ns)
95
35
8610ab G18
80
–25 5 65
75
125
120
115
110
105
100
90
85
95 125
155
V
OUT
= 3.3V
I
LOAD
= 0.5A
LOAD CURRENT (A)
DROPOUT VOLTAGE (V)
400
8610ab G19
200
0
600
800
300
100
500
700
0 0.5
1
1.5 2 2.5
3.5
3
TEMPERATURE (°C)
–55
SWITCHING FREQUENCY (kHz)
730
35
8610ab G20
700
680
–25 5 65
670
660
740
R
T
= 60.4k
720
710
690
95 125
155
LT8610A/LT8610AB Series
8
8610abfa
For more information www.linear.com/LT8610A
TYPICAL PERFORMANCE CHARACTERISTICS
Soft-Start Tracking Soft-Start Current PG High Thresholds
RT Programmed Switching
FrequencyPG Low Thresholds V
IN
UVLO
TR/SS VOLTAGE (V)
0
FB VOLTAGE (V)
0.8
1.0
1.2
0.6 1.0
8610ab G23
0.6
0.4
0.2 0.4
0.8 1.2
1.4
0.2
0
TEMPERATURE (°C)
–50
SS PIN CURRENT (µA)
2.3
35
8610ab G24
2.0
1.8
–25 5 65
1.7
1.6
2.4
2.2
2.1
1.9
95 125
155
V
SS
= 0.5V
TEMPERATURE (°C)
–55
7.0
PG THRESHOLD OFFSET FROM V
REF
(%)
7.5
8.5
9.0
9.5
12.0
10.5
5
65
95 125
8610ab G25
8.0
11.0
11.5
10.0
–25
35
155
FB RISING
FB FALLING
SWITCHING FREQUENCY (MHz)
0.2
RT PIN RESISTOR (kΩ)
150
200
250
1.8
8610ab G27
100
50
125
175
225
75
25
0
0.6
1
1.4
2.2
TEMPERATURE (°C)
–55
INPUT VOLTAGE (V)
3.4
35
8610ab G28
2.8
2.4
–25 5 65
2.2
2.0
3.6
3.2
3.0
2.6
95 125
155
TEMPERATURE (°C)
–55
–12.0
PG THRESHOLD OFFSET FROM V
REF
(%)
–11.5
–10.5
–10.0
–9.5
–7.0
–8.5
5
65
95 125
8610ab G26
–11.0
–8.0
–7.5
–9.0
–25
35
155
FB RISING
FB FALLING
Minimum Load to Full Frequency Burst Frequency
Frequency Foldback
INPUT VOLTAGE (V)
LOAD CURRENT (mA)
60
70
80
15 25
40
8610ab G39
40
20
0
50
30
10
5 10
20
30 35
V
OUT
= 3.3V
f
SW
= 700kHz
PULSE-SKIPPING MODE
FB VOLTAGE (V)
0
SWITCHING FREQUENCY (kHz)
300
400
500
0.6
1
8610ab G22
200
100
0
0.2 0.4 0.8
600
700
800
V
OUT
= 3.3V
V
IN
= 12V
V
SYNC
= 0V
R
T
= 60.4k
LOAD CURRENT (mA)
0
SWITCHING FREQUENCY (kHz)
400
500
600
800
8610ab G21
300
200
0
200 400 600 700100 300 500
100
800
V
IN
= 12V
V
OUT
= 3.3V
L = 4.7µH
LT8610A
LT8610AB
700
LT8610A/LT8610AB Series
9
8610abfa
For more information www.linear.com/LT8610A
Bias Pin Current
Bias Pin Current
INPUT VOLTAGE (V)
5
BIAS PIN CURRENT (mA)
4.5
5.5
45
8610ab G29
3.5
2.5
15
25
35
10
20
30
40
6.5
4.0
5.0
3.0
6.0
V
BIAS
= 5V
V
OUT
= 5V
I
LOAD
= 1A
f
SW
= 700kHz
SWITCHING FREQUENCY (MHz)
0
0
BIAS PIN CURRENT (mA)
2
4
6
8
10
12
0.5 1 1.5 2
8610ab G30
2.5
V
BIAS
= 5V
V
OUT
= 5V
V
IN
= 12V
I
LOAD
= 1A
TYPICAL PERFORMANCE CHARACTERISTICS
Switching Waveforms
Switching Waveforms Switching Waveforms
LT8610A/LT8610AB
Transient Response
LT8610A/LT8610AB
Transient Response Start-Up Dropout Performance Start-Up Dropout Performance
I
L
1A/DIV
V
SW
5V/DIV
500ns/DIV
12V
IN
TO 5V
OUT
AT 1A
8610ab
G31
I
L
200mA/DIV
V
SW
5V/DIV
500µs/DIV
12V
IN
TO 5V
OUT
AT 10mA
V
SYNC
= 0V
(LT8610A)
8610ab
G32
I
L
1A/DIV
V
SW
10V/DIV
500ns/DIV
36V
IN
TO 5V
OUT
AT 1A
8610ab
G33
I
L
2A/DIV
V
OUT
200mV/DIV
50µs/DIV
1.5A TO 3.5A TRANSIENT
12V
IN
, 3.3V
OUT
C
OUT
= 47µF
8610ab
G34
I
L
2A/DIV
V
OUT
200mV/DIV
50µs/DIV
30mA TO 2A TRANSIENT
12V
IN
, 3.3V
OUT
C
OUT
= 47µF
8610ab
G35
V
IN
2V/DIV
V
OUT
2V/DIV
100ms/DIV
2.5Ω LOAD
(2A IN REGULATION)
8610ab
G37
V
IN
V
OUT
V
IN
2V/DIV
V
OUT
2V/DIV
100ms/DIV
20Ω LOAD
(250mA IN REGULATION)
8610ab
G38
V
IN
V
OUT
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P26

LT8610AIMSE-3.3#PBF

Mfr. #:
Buy LT8610AIMSE-3.3#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 42V, 3.5A Synchronous Step-Down Regulator with 2.5uA Quiescent Current
Lifecycle:
New from this manufacturer.
Delivery:
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