Datasheet

LT8582
5
8582f
TYPICAL PERFORMANCE CHARACTERISTICS
Switch Current Limit at Minimum
Duty Cycle
CLKOUT Duty Cycle
Oscillator Frequency
Switching Frequency During
Soft-Start Gate Pin Current (V
SS
= 2.1V)
Switch Current Limit vs Duty
Cycle
Switch Saturation Voltage
Switch Current Sharing
T
A
= 25°C, unless otherwise noted.
SWA CURRENT (A)
0
0
I
SWB
/I
SWA
(A/A)
0.4
0.3
0.2
0.1
0.6
0.8
0.7
0.9
1
1.5 3.5
8582 G03
0.5
0.5
2
2.5
3
1.0
TEMPERATURE (°C)
–50
0
SWA + SWB CURRENT (A)
2
1
3
4
0
25 150
8582 G04
–25
50
75
100 125
5
TEMPERATURE (°C)
–50
0
CLKOUT DUTY CYCLE (%)
40
20
60
80
0 150
8582 G06
–25
25
50 75 100 125
100
CHANNEL 1
CHANNEL 2
GATE PIN VOLTAGE (V)
0
GATE PIN CURRENT (µA)
60
8582 G09
10
20
30 40 50
1100
1000
900
800
700
600
500
400
300
200
100
0
T
A
= –40°C
T
A
= 25°C
T
A
= 125°C
SS VOLTAGE (V)
0
0
SWA + SWB CURRENT (A)
2
1
3
4
0.4 1.2
8582 G05
0.2
0.6
0.8 1
5
Commanded Current Limit vs
SS Voltage
TEMPERATURE (°C)
–50
0.2
FREQUENCY (MHz)
0.6
0.4
0.0
0.8
1.0
1.2
1.4
1.6
2.4
2.2
2.0
1.8
0 150
8582 G07
–25
25
50 75 100 125
2.8
2.6
3.0
R
T
= 31.6k
R
T
= 402k
DUTY CYCLE (%)
10
0
SWA + SWB CURRENT (A)
1
3
4
40
50 90
8582 G01
2
20 30
60
70
80
5
SWA + SWB CURRENT (A)
0
0
SATURATION VOLTAGE (mV)
50
150
250
200
300
1
1.5 3.5
8582 G02
100
0.5
2
2.5
3
350
V
SW1
= V
SW2
FBX VOLTAGE (V)
0
NORMALIZED OSCILLATOR FREQUENCY (f
SW
/f
NOM
)
1/4
1/5
1/3
1/2
1.2
8582 G08
0.2
0.4
0.6 0.8 1
1
INVERTING
CONFIGURATIONS
NONINVERTING
CONFIGURATIONS