SG3525ADWG ON Semiconductor, SG3525ADWG Datasheet - Page 7
![IC PWM SMPS CONTROLLER 16-SOIC](/photos/5/67/56711/488-16-soic_sml.jpg)
SG3525ADWG
Manufacturer Part Number
SG3525ADWG
Description
IC PWM SMPS CONTROLLER 16-SOIC
Manufacturer
ON Semiconductor
Datasheet
1.SG3525ADWR2G.pdf
(10 pages)
Specifications of SG3525ADWG
Pwm Type
Voltage Mode
Number Of Outputs
2
Frequency - Max
400kHz
Duty Cycle
49%
Voltage - Supply
8 V ~ 35 V
Buck
No
Boost
No
Flyback
No
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
No
Operating Temperature
0°C ~ 70°C
Package / Case
16-SOIC (0.300", 7.5mm Width)
Frequency-max
400kHz
Topology
Half-Bridge, Push-Pull
Output Current
400 mA
Switching Frequency
400 KHz
Duty Cycle (max)
49 %
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Fall Time
50 ns
Mounting Style
SMD/SMT
Rise Time
100 ns
Synchronous Pin
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
The low source impedance of the output drivers provides
rapid charging of power FET input capacitance while
minimizing external components.
For single−ended supplies, the driver outputs are grounded.
The V
source transistors on alternate oscillator cycles.
+
Figure 10. Single−Ended Supply
V
Figure 12. Driving Power FETS
+
supply
C
V
supply
terminal is switched to ground by the totem−pole
SG3525A
GND
V
C
13
12
R1
A
B
R1
SG3525A
11
14
GND
Q1
V
C
12
R2
13
Q1
Q2
A
B
To Output Filter
14
11
Clock
5.0k
Q1
F/F
T1
Q4
10k
V
Q2
ref
Figure 9. Output Circuit
Q5
PWM
(1/2 Circuit Shown)
http://onsemi.com
10k
Q3
V
SG3525A
CC
Q6
7
in SG3527A
Q8
Q6 Omitted
Q7
Q9
+V
In conventional push−pull bipolar designs, forward base drive is
controlled by R1−R3. Rapid turn−off times for the power devices
are achieved with speed−up capacitors C1 and C2.
Low power transformers can be driven directly by the SG3525A.
Automatic reset occurs during deadtime, when both ends of the
primary winding are switched to ground.
supply
+V
5.0k
SG3525A
2.0k
Figure 13. Driving Transformers in a
supply
Q10
Figure 11. Push−Pull Configuration
GND
Q11
V
C
SG3525A
13
13
12
A
B
GND
Half−Bridge Configuration
Output
V
V
C
C
11, 14
11
14
13
12
R1
A
B
11
14
T1
C1
C2
R3
R2
Q1
Q2
R2
R1
Q1
Q2
T2
T1
C1
C2