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LTC3522 データシート(PDF) 4 Page - Linear Technology

部品番号 LTC3522
部品情報  Synchronous 400mA Buck-Boost and 200mA Buck Converters
PDF  20 Pages
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メーカー  LINER [Linear Technology]
ホームページ  http://www.linear.com
Logo LINER - Linear Technology

LTC3522 データシート(HTML) 4 Page - Linear Technology

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LTC3522
4
3522f
TYPICAL PERFORMANCE CHARACTERISTICS
Buck-Boost Efficiency,
Li-Ion to 3.3V
Buck Efficiency, Li-Ion to 2.5V
Buck Efficiency, Li-Ion to 1.8V
Buck Burst Mode Threshold
Buck Switch RDS(0N)
Switching Frequency vs
Temperature
LOAD CURRENT (mA)
1
0
20
30
40
50
60
70
10
100
3522 G01
80
90
100
0
20
40
60
80
100
120
140
160
10
1000
Burst Mode
OPERATION
Burst Mode
POWER LOSS
PWM Mode
VIN = 4.2V
VIN = 2.7V
L: COILCRAFT
MSS6132-4.7
μH
LOAD CURRENT (mA)
1
0
20
30
40
50
60
70
10
100
3522 G02
80
90
100
0
20
40
80
60
100
120
140
160
10
1000
VIN = 3.7V
VIN = 4.2V
Burst Mode
OPERATION
Burst Mode
POWER LOSS
PWM Mode
L: COILCRAFT
MSS6132-8.2
μH
LOAD CURRENT (mA)
1
0
20
30
40
50
60
70
10
100
3522 G03
80
90
100
0
20
40
60
80
100
120
140
160
10
1000
Burst Mode
OPERATION
Burst Mode
POWER LOSS
PWM Mode
VIN = 4.2V
VIN = 2.7V
L: COILCRAFT
MSS6132-8.2
μH
Buck-Boost Switch RDS(0N)
VIN (V)
2.4
0
5
15
20
25
50
35
3.4
4.4
4.9
3522 G04
10
40
45
30
2.9
3.9
5.4
VOUT = 1.2V
VOUT = 1.8V
VOUT = 2.5V
L = 4.7
μH
TEMPERATURE (
°C)
–40
200
250
300
120
3522 G05
150
100
0
0
40
80
–20
20
60
100
50
400
PMOS
(SWITCHES A AND D)
NMOS
(SWITCHES B AND C)
350
TEMPERATURE (
°C)
–40
400
500
120
3522 G06
300
200
0
0
40
80
–20
20
60
100
100
600
PMOS
NMOS
TEMPERATURE (
°C)
–50
–10
–8
–4
–2
0
10
4
–10
30
50
3522 G07
–6
6
8
2
–30
10
70
90 110
Switching Frequency vs VIN
VIN (V)
2.5
–10
–8
–4
–2
0
10
4
3.4
4.4
4.9
3522 G08
–6
6
8
2
2.9
3.9
5.4
(TA = 25°C unless otherwise noted)



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