LTC3568 查看數據表（PDF） - Linear Technology
零件编号
产品描述 (功能)
生产厂家
LTC3568 Datasheet PDF : 18 Pages
| |||
LTC3568
Typical Performance Characteristics
Burst Mode Operation
VOUT
10mV/
DIV
SW
2V/DIV
IL
500mA/
DIV
VIN = 3.3V
VOUT = 2.5V
ILOAD = 100mA
10µs/DIV
Pulse Skipping Mode
VOUT
10mV/
DIV
SW
2V/DIV
3568 G01
IL
200mA/
DIV
VIN = 3.3V
VOUT = 2.5V
ILOAD = 100mA
2µs/DIV
Forced Continuous Mode
VOUT
10mV/
DIV
SW
2V/DIV
3568 G02
IL
500mA/
DIV
VIN = 3.3V
VOUT = 2.5V
ILOAD = 100mA
2µs/DIV
3568 G03
Efficiency vs Load Current
100
Burst Mode
OPERATION
95
90
85
80
PULSE SKIP FORCED CONTINUOUS
75
VIN = 3.3V
VOUT = 2.5V
CIRCUIT OF FIGURE 7
70
1
10
100
1000
10000
LOAD CURRENT (mA)
3568 G04
Efficiency vs VIN
100
IOUT = 500mA
95
90
85
IOUT = 1.8A
80
75
70
65 VOUT = 2.5V
CIRCUIT OF FIGURE 7
60
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VIN (V)
3568 G05
Load Step
VOUT
100mV/
DIV
IL
1A/
DIV
VIN = 3.3V
50µs/DIV
VOUT = 2.5V
ILOAD = 180mA TO 1.8A
3568 G06
Load Regulation
0.6
0.5
Burst Mode
0.4
OPERATION
VIN = 3.3V
VOUT = 1.8V
0.3
PULSE SKIP
0.2
0.1
0 FORCED
–0.1 CONTINUOUS
–0.2
–0.3
–0.4
1
10
100
1000
LOAD CURRENT (mA)
10000
3568 G07
Line Regulation
0.20
VOUT = 1.8V
0.15
0.10
0.05
IOUT = 1.8A
0
IOUT = 500mA
–0.05
–0.10
–0.15
–0.20
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VIN (V)
3568 G08
Frequency vs VIN
10
8
VOUT = 1.8V
IOUT = 1.25A
6 TA = 25°C
4
2
0
–2
–4
–6
–8
–10
2
3
4
VIN (V)
5
6
3568 G09
3568fa
Share Link: 