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LTC3521 数据表(PDF) 5 Page - Linear Technology

部件名 LTC3521
功能描述  Wide VIN, 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters
PDF  20 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC3521 数据表(HTML) 5 Page - Linear Technology

  LTC3521 Datasheet HTML 1Page - Linear Technology LTC3521 Datasheet HTML 2Page - Linear Technology LTC3521 Datasheet HTML 3Page - Linear Technology LTC3521 Datasheet HTML 4Page - Linear Technology LTC3521 Datasheet HTML 5Page - Linear Technology LTC3521 Datasheet HTML 6Page - Linear Technology LTC3521 Datasheet HTML 7Page - Linear Technology LTC3521 Datasheet HTML 8Page - Linear Technology LTC3521 Datasheet HTML 9Page - Linear Technology Next Button
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LTC3521

3521f
Buck-Boost Feedback Voltage
vs Temperature
Typical perForMance characTerisTics
Buck Feedback Voltage
vs Temperature
Buck-Boost Maximum Load
Current, Burst Mode Operation
No Load Quiescent Current
vs VIN
Switching Frequency vs VIN
Buck-Boost Maximum Load
Current, PWM Mode
100
500
900
1300
300
700
1100
1500
VIN (V)
3521 G13
VOUT = 3.3V
L = 4.7µH
VOUT = 5V
1.8
5.3
2.8
3.8
2.3
3.3
4.3
4.8
100µs/DIV
VOUT
100mV/DIV
INDUCTOR
CURRENT
500mA/DIV
3521 G15
VIN = 3.6V, VOUT = 3.3V
L = 4.7µH
COUT = 22µF
Buck-Boost Load Step,
0mA to 750mA
TA = 25°C, unless otherwise noted.
Burst Mode Quiescent Current
vs VIN
VIN (V)
1.8
1.0
1.5
5.3
0.5
0
2.8
3.8
2.3
3.3
4.3
4.8
–1.5
–2.0
–0.5
2.0
–1.0
3521 G08
TEMPERATURE (°C)
–40
0.1
100
0
–0.1
0
40
–20
20
60
120
80
–0.4
–0.5
–0.2
0.2
–0.3
3521 G09
TEMPERATURE (°C)
–0.1
0
0.1
–0.2
–0.3
–0.4
–0.5
0.2
3521 G10
–50 –25
25
0
50
75
100 125
VIN (V)
1.8
5.3
31
2.8
3.8
2.3
3.3
4.3
4.8
25
29
33
27
3521 G11
ALL THREE CONVERTERS ENABLED
VIN (V)
1.8
60
70
80
5.3
50
40
2.8
3.8
2.3
3.3
4.3
4.8
10
0
30
90
20
3521 G12
VOUT = 3V
VOUT = 5V
VIN (V)
1.8
5.3
2.8
3.8
2.3
3.3
4.3
4.8
45
40
55
60
50
3521 G14



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