LTC3520 Linear Technology, LTC3520 Datasheet - Page 10

• Manufacturer Part Number: LTC3520
• Description: Synchronous 1A Buck-Boost and 600mA Buck Converters
• Manufacturer: Linear Technology

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LTC3520
BLOCK DIAGRAM
10
14
13
5
6
8
3
2
1
*PINS SV
PWM1
SD1
SD3
A
A
SV
FB2
SS2
IN
OUT
0.786V
IN
23
*
PV
INTERNAL
0.790V
IN
IN1
2A
, PV
V
CC
*
5µA
IN1
+
–
24
+
+
–
, PV
+
–
COMPENSATION
PV
Gm
3A
Gm
IN2
IN3
A
SLOPE
*
AND PV
+
–
PGND1
B
IN3
22
SW1A
MUST BE CONNECTED TOGETHER IN THE APPLICATION.
+
SGND
16
SHUTDOWN
REFERENCE
+
–
BANDGAP
THERMAL
DRIVERS
BOOST
BUCK-
LOGIC
GATE
PWM
PGND1
21
1.25A
PWM2
DISABLE
PGND1
20
+
–
SW1B
C
12
+
–
+
–
D
SD2
LOGIC
BUCK
PWM
7
19
0.56A
V
OUT1
–
+
+
OSC
0.782V
0A
5µA
PGND2
PV
SW2
IN2
SS1
FB1
V
R
C1
3520 F02
*
T
18
17
15
10
11
4
9
3520f