lt3572 Linear Technology Corporation, lt3572 Datasheet - Page 6

• Manufacturer Part Number: lt3572
• Description: Dual Full-bridge Piezo Driver With 900ma Boost Converter
• Manufacturer: Linear Technology Corporation

LT3572
BLOCK DIAGRAM
6
18
19
17
16
OUTA
OUTA
OUTB
OUTB
8
V
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q9
OUT
6
7
PWMA
PWMB
OSCILLATOR
4
RT
R3
3
SYNC
A5
Figure 1. Block Diagram
R
C
C
C
+
–
Q10
A2
15
PGOOD
A6
S
R
10
A4
SHDN
INTERNAL BIAS
Q
START-UP/
A3
A1
11
A7
SHDNA
+
+
+
–
–
–
12
1.245V
95%/85%
SHDNB
Q1
R5
GND
GND
GND
GND
SW
V
SS
FB
IN
20
21
13
14
2
1
5
9
C2
L1
V
R1
R2
OUT
D1
3572 F01
C1
R4
3572f