LTC3855 LINER [Linear Technology], LTC3855 Datasheet - Page 8

• Manufacturer Part Number: LTC3855
• Description: Dual, Fast, Accurate Step-Down DC/DC Controller
• Manufacturer: LINER [Linear Technology]

LTC3838
TYPICAL PERFORMANCE CHARACTERISTICS
8
–0.1
–0.2
1.65
1.80
1.75
1.70
1.55
1.50
1.60
100
0.2
0.1
90
80
70
60
50
40
30
20
10
0
0
–50
0
0
Output Regulation
vs Input Voltage
t
vs V
Error Amplifier Transconductance
vs Temperature
ON(MIN)
V
R
V
I
V
LOAD
IN
T
OUT
OUT
–25
ADJUSTED FOR f
= 38V
5
OUT
= 0.6V
NORMALIZED AT V
1
= 5A
10
(Voltage on SENSE
0
and t
t
ON(MIN)
TEMPERATURE (°C)
2
15
25
V
OFF(MIN)
SENSE
t
V
OFF(MIN)
IN
CLKOUT
50
20
3
(V)
–
IN
(V)
25
75
= 15V
= 2MHz
4
100
30
CHANNEL 1
CHANNEL 2
–
5
Pin)
125
35
3838 G18
3838 G24
3838 G27
150
40
6
–0.1
–0.2
100
0.2
0.1
–1
–2
90
80
70
60
50
40
30
20
10
2
1
0
0
0
0
0
CLKOUT/Switching Frequency
vs Input Voltage
0
Output Regulation
vs Load Current
t
vs Voltage on V
ON(MIN)
V
I
f = 500kHz
FREQUENCY NORMALIZED AT V
V
R
V
V
V
LOAD
OUT
OUT
T
IN
OUT
OUT
ADJUSTED FOR f
5
5
= 15V
= 0.6V
= 0.6V
= 0.6V
NORMALIZED AT I
= 5A
2
10
10
t
and t
ON(MIN)
15
15
OFF(MIN)
4
I
t
LOAD
V
OFF(MIN)
V
IN
IN
IN
CLKOUT
20
20
(V)
(V)
Pin
(A)
LOAD
6
25
25
= 2MHz
= 4A
IN
30
30
CHANNEL 1
CHANNEL 2
= 15V
8
35
35
3838 G21
3838 G25
3838 G19
40
10
40
100
–0.2
–0.4
–0.6
0.6
0.2
90
80
70
60
50
40
30
0.4
20
10
–1
–2
0
0
2
1
0
200
–50
–50
t
vs Switching Frequency
Output Regulation
vs Temperature
CLKOUT/Switching Frequency
vs Temperature
ON(MIN)
V
V
V
V
I
V
V
I
f = 500kHz
FREQUENCY NORMALIZED AT T
LOAD
LOAD
IN
OUT
IN
OUT
OUT
IN
CLKOUT/SWITCHING FREQUENCY (kHz)
–25
–25
= 38V
= 15V
= 15V, V
500
= 0.6V
= 0.6V
NORMALIZED AT T
= 0A
= 0A
and t
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
800
OUT
25
25
OFF(MIN)
= 0.6V
t
t
OFF(MIN)
ON(MIN)
1100
50
50
A
= 25°C
75
75
1400
100 125 150
100
A
CHANNEL 1
CHANNEL 2
= 25°C
1700
125
3838 G26
3838 G23
3838 G20
3838fa
2000
150