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LTC3521 数据表(PDF) 18 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) 18 Page - Linear Technology

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LTC3521

3521f
Typical applicaTion
Dual Supercapacitor to 3.3V at 200mA, 1.8V at 50mA and 1.2V at
100mA Backup Power Supply
Converter Output Voltages
Efficiency vs VIN
+
PVIN1
PVIN2
SW2
SW3
FB2
FB3
VOUT1
LTC3521
SHDN2
SHDN1
R1
1.0M
R3
137k
R4
68.1k
C1
22µF
C2
10µF
C4
4.7µF
1F
+
1F
L1
4.7µH
L2
4.7µH
VOUT1
3.3V
200mA
VOUT2
1.8V
50mA
R5
100k
R6
100k
C3
10µF
L3
4.7µH
VOUT3
1.2V
100mA
VIN
1.8V TO 5.5V
R2
221k
3521 TA02a
SHDN3
PWM
SW1A
SW1B
FB1
PGOOD2
PGOOD1
PGOOD3
PGND2
GND
PGND1
ON
OFF
PWM
BURST
VIN (V)
1.8
76
84
92
2.8
3.8
4.8
100
72
80
88
96
3521 TA02c
VOUT1 = 3.3V
IOUT = 200mA
VOUT2 = 1.8V
IOUT = 50mA
VOUT3 = 1.2V
IOUT = 100mA
50µs/DIV
VIN
2V/DIV
VOUT2
2V/DIV
VOUT3
2V/DIV
VOUT1
2V/DIV
3521 TA02b



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