TDA4700A Siemens Semiconductor, TDA4700A Datasheet - Page 3

• Manufacturer Part Number: TDA4700A
• Description: Control IC for Single-Ended and Push-Pull Switched-Mode Power Supplies SMPS
• Manufacturer: Siemens Semiconductor

Pin Definitions and Functions (TDA 4700)
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Semiconductor Group
Symbol
GND
+
+
Q2
Q1
I SYM Q2
Q SYNC
C
R
C
C
R
C
I COMP
Q Op Amp
– I Op Amp
+ I Op Amp
I SYNC
ON/OFF/IUV
QOV
IOV
–
+
I SYM Q1
T
R
soft start
filter
T
R
I
V
V
I
DYN
DYN
REF
S
Function
Ground 0 V
Reference voltage
Supply voltage
Output Q2
Output Q1
Symmetry Q2
Sync. output
Soft start
VCO
Capacitance
VCO
Ramp generator
Ramp generator
Comparator input
Operational amplifier output
Operational amplifier input (–)
Operational amplifier input (+)
Sync. input
ON/OFF, undervoltage
Overvoltage output
Overvoltage input
Dynamic current limitation (–)
Dynamic current limitation (+)
Symmetry
R
C
T
T
3
R
C
R
R
TDA 4700
TDA 4718