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LTC3522 Datasheet(PDF) 8 Page - Linear Technology

Part # LTC3522
Description  Synchronous 400mA Buck-Boost and 200mA Buck Converters
PDF  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3522 Datasheet(HTML) 8 Page - Linear Technology

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LTC3522
8
3522f
BLOCK DIAGRAM
+
–
+
–
PGOOD1
VOUT1
6
12
FB1
SHDN1
FILTER
PGOOD2
4
13
0.9V
0.85A
+
–
0.250A
+
–
0A
IZERO
BUCK-BOOST
PWM
LOGIC
GATE
DRIVES
GATE
DRIVES
BUCK
PWM
LOGIC
BANDGAP
REFERENCE
AND OT
SHUTDOWN
OSCILLATOR
UVLO
1.00V
SOFT-START
RAMP
SOFT-START
RAMP
7
PWM
2
SHDN2
5
D
VOUT1
10
SW1B
11
SW1A
8
PVIN1*
15
PVIN2*
INTERNAL
VCC
C
B
A
PGND2
PGND1
PGND1
ZERO CROSSING
14
SW2
FB2
+
–
0A
+
–
+
–
0.4A
ILIMIT
0.548V
3522 BD
0.594V
gm
PGND1
3
GND
*PVIN1 AND PVIN2 MUST BE CONNECTED TOGETHER IN THE APPLICATION.
9
PGND2
SLOPE
COMPENSATION
1
+
+
–
16
1.00V
0.594V
0.9V
0.548V



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