LTC3520 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
メーカー
LTC3520 Datasheet PDF : 24 Pages
| |||
TYPICAL PERFORMANCE CHARACTERISTICS
LTC3520
Buck-Boost Output Voltage vs
Load Current
0.5
0.4
0.3
TA = –40°C
0.2
TA = 25°C
0.1
0
–0.1
TA = 125°C
–0.2
–0.3
–0.4
–0.5
0
200 400 600 800 1000 1200
LOAD CURRENT (mA)
3520 G24
LDO Output Voltage vs
Load Current
0.20
0.15
0.10
0.05
0
–0.05
–0.10
TA = 125°C
TA = –40°C
TA = 25°C
–0.15
–0.20
0
100
200
LOAD CURRENT (mA)
300
3520 G25
Buck-Boost Maximum Output
Current, Burst Mode Operation
140
120
VOUT = 3.3V
100
80
VOUT = 5V
60
40
20
0
2.2 2.7 3.2 3.7 4.2 4.7 5.2
VIN (V)
3520 G17
Buck-Boost PWM Mode
Efficiency vs Frequency
100
L = 8.2μH COILCRAFT
MSS6132
95
L = 4.7μH COILCRAFT
MSS7341
90
L = 2.2μH
85
COILCRAFT
1812PS
80
75 VIN = 3.6V
VOUT = 3.3V
ILOAD = 200mA
70
0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
SWITCHING FREQUENCY (MHz)
3520 G18
Buck-Boost Maximum
Output Current, PWM Mode
1800
1600
VOUT = 3.3V
1400
1200
1000
VOUT = 5V
800
600
400
200
0
2.2 2.7 3.2 3.7 4.2 4.7 5.2
VIN (V)
3520 G16
Buck Efficiency vs Frequency
100
95
L = 8.2μH
COILCRAFT
90 MSS6132
85
L = 4.7μH SUMIDA
CDRH3D16NP
L = 2.2μH
SUMIDA
CDRH3D16NP
80
75 VIN = 2.5V
VOUT = 1.8V
ILOAD = 100mA
70
0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
SWITCHING FREQUENCY (MHz)
3520 G19
Buck-Boost Burst Mode Operation
VOUT
50mV/DIV
INDUCTOR
CURRENT
200mA/DIV
20μs/DIV
COUT = 22μF ILOAD = 25mA
L = 4.7μH VIN = 3.6V
3520 G21
Buck Burst Mode Operation
BUCK VOUT
50mV/DIV
INDUCTOR
CURRENT
200mA/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 10mA
10μs/DIV
RBURST = 249k
COUT = 10μF
3520 G22
3520fa
7
Share Link: 