LTC3785 LINER [Linear Technology], LTC3785 Datasheet - Page 6

• Manufacturer Part Number: LTC3785
• Description: High Efficiency, Synchronous, 4-Switch Buck-Boost Controller
• Manufacturer: LINER [Linear Technology]

LTC3789
Typical perForMance characTerisTics
6
10V/DIV
10V/DIV
10V/DIV
10V/DIV
1A/DIV
1A/DIV
SW1
SW2
SW1
SW2
700
600
500
400
300
200
100
0
I
I
L
L
–50
Forced Continuous Mode
Pulse-Skipping Mode
V
V
Oscillator Frequency
vs Temperature
V
V
IN
OUT
IN
OUT
= 6V
= 6V
= 12V
= 12V
0
TEMPERATURE (°C)
V
V
V
FREQ
FREQ
FREQ
4µs/DIV
4µs/DIV
50
= 2.4V
= 1.2V
= 0V
100
3789 G16
3789 G13
3789 G10
150
10V/DIV
10V/DIV
10V/DIV
10V/DIV
1A/DIV
1A/DIV
SW1
SW2
SW1
SW2
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
I
I
0
L
L
–60
Forced Continuous Mode
V
V
Pulse-Skipping Mode
Undervoltage Threshold at INTV
vs Temperature
V
V
IN
OUT
IN
OUT
= 12V
= 12V
–40 –20
= 12V
= 12V
TEMPERATURE (°C)
0
4µs/DIV
2µs/DIV
FALLING
RISING
20
40
60
T
80
A
3789 G11
3789 G14
= 25°C unless otherwise noted.
CC
3789 G17
100
10V/DIV
10V/DIV
10V/DIV
10V/DIV
1A/DIV
1A/DIV
SW1
SW2
SW1
SW2
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
I
I
0
L
L
–60
Forced Continuous Mode
Pulse-Skipping Mode
Undervoltage Threshold at V
vs Temperature
V
V
V
V
IN
OUT
IN
OUT
= 18V
= 18V
–40 –20
= 12V
= 12V
TEMPERATURE (°C)
0
4µs/DIV
2µs/DIV
FALLING
RISING
20
40
60
IN
80
3789 G12
3789 G15
3789f
3789 G18
100