LTC3775 Linear Technology, LTC3775 Datasheet - Page 7

• Manufacturer Part Number: LTC3775
• Description: High Frequency Synchronous Step-Down Voltage Mode DC/DC Controller
• Manufacturer: Linear Technology

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TYPICAL PERFORMANCE CHARACTERISTICS
20
18
16
14
12
10
8
6
4
2
0
–50
Shutdown Current vs Temperature
–25
0
TEMPERATURE (°C)
1V/DIV
–0.2
–0.6
–0.8
–1.0
–0.4
BG
0V
25
0
0
INTV
BG Turn-On Waveform Driving
Renesas RJK0301
V
V
LOAD = 1A
MOSFET: RENESAS RJK0301
IN
OUT
50
= 12V
= 1.2V
CC
10
INTV
Dropout
75
CC
LOAD CURRENT (mA)
100
20
20ns/DIV
3775 G18
125
30
T
40
A
7
6
4
3
2
0
8
5
1
= 25°C
3.6
Quiescent Current vs INTV
3775 G21
3775 G23
50
4.0
4.4
INTV
4.8
CC
(V)
5.2
1V/DIV
–0.4
–1.0
–0.2
–0.6
–0.8
CC
BG
0V
5.6
0
–50 –25
INTV
BG Turn-Off Waveform Driving
Renesas RJK0301
V
V
LOAD = 1A
MOSFET: RENESAS RJK0301
3775 G19
LOAD CURRENT = 20mA
IN
OUT
= 12V
6.0
= 1.2V
CC
Dropout vs Temperature
0
TEMPERATURE (°C)
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
–0.7
–0.8
–0.9
–1.0
25
20ns/DIV
0
0
INTV
50
CC
10
INTV
75
Load Regulation
CC
100
LOAD CURRENT (mA)
20
3775 G22
3775 G24
LTC3775
125
30
V
40
IN
= 12V
3775 G20
7
3775f
50