LTC3778 データシートの表示（PDF） - Linear Technology
部品番号
コンポーネント説明
一致するリスト
LTC3778 Datasheet PDF : 24 Pages
| |||
LTC3778
TYPICAL PERFOR A CE CHARACTERISTICS
Transient Response
VOUT
50mV/DIV
IL
5A/DIV
Transient Response
(Discontinuous Mode)
VOUT
50mV/DIV
IL
5A/DIV
Start-Up
RUN/SS
2V/DIV
VOUT
1V/DIV
IL
5A/DIV
20µs/DIV
LOAD STEP 0A TO 10A
VIN = 15V
VOUT = 2.5V
FCB = 0V
FIGURE 1 CIRCUIT
3778 G01
Efficiency vs Load Current
100
90
DISCONTINUOUS
MODE
80
CONTINUOUS
MODE
70
60
50
0.001
VIN = 10V
VOUT = 2.5V
EXTVCC = 5V
FIGURE 1 CIRCUIT
0.01
0.1
1
10
LOAD CURRENT (A)
3778 G03
Load Regulation
0
FIGURE 1 CIRCUIT
–0.1
–0.2
–0.3
–0.4
0
2
4
6
8
10
LOAD CURRENT (A)
3778 G06
4
20µs/DIV
LOAD STEP 1A TO 10A
VIN = 15V
VOUT = 2.5V
FCB = INTVCC
FIGURE 1 CIRCUIT
3778 G02
Efficiency vs Input Voltage
100
FCB = 5V
FIGURE 1 CIRCUIT
95
ILOAD = 1A
90
ILOAD = 10A
85
80
0
5 10 15 20 25 30
INPUT VOLTAGE (V)
3778 G04
ITH Voltage vs Load Current
2.5
FIGURE 1 CIRCUIT
VRNG = 1V
2.0
1.5
CONTINUOUS
MODE
1.0
DISCONTINUOUS
0.5
MODE
0
0
5
10
LOAD CURRENT (A)
15
3778 G07
VIN = 15V
VOUT = 2.5V
RLOAD = 0.125Ω
50ms/DIV
3778 G19
Frequency vs Input Voltage
300
FCB = 0V
FIGURE 1 CIRCUIT
280
IOUT = 10A
260
240
IOUT = 0A
220
200
5
10
15
20
INPUT VOLTAGE (V)
Current Sense Threshold
vs ITH Voltage
25
3778 G05
300
VRNG = 2V
200
1.4V
1V
100
0.7V
0.5V
0
–100
–200
0
0.5 1.0 1.5 2.0
ITH VOLTAGE (V)
2.5 3.0
3778 G08
3778f
Share Link: 