SG3525ADWG ON Semiconductor, SG3525ADWG Datasheet - Page 3

• Manufacturer Part Number: SG3525ADWG
• Description: IC PWM SMPS CONTROLLER 16-SOIC
• Manufacturer: ON Semiconductor

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

Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. Derate at 10 mW/ C for ambient temperatures above +50 C.
2. Derate at 16 mW/ C for case temperatures above +25 C.
Shutdown Options (See Block Diagram, page 2)
(Pins 9 and 8) have current source pull−ups, either can
readily accept a pull−down signal which only has to sink a
maximum of 100 mA to turn off the outputs. This is subject
to the added requirement of discharging whatever external
capacitance may be attached to these pins.
of Pin 10 which has been improved to enhance the available
shutdown options. Activating this circuit by applying a
positive signal on Pin 10 performs two functions: the PWM
MAXIMUM RATINGS
RECOMMENDED OPERATING CONDITIONS
Supply Voltage
Collector Supply Voltage
Logic Inputs
Analog Inputs
Output Current, Source or Sink
Reference Output Current
Oscillator Charging Current
Power Dissipation
Thermal Resistance, Junction−to−Air
Thermal Resistance, Junction−to−Case
Operating Junction Temperature
Storage Temperature Range
Lead Temperature (Soldering, 10 seconds)
Supply Voltage
Collector Supply Voltage
Output Sink/Source Current
Reference Load Current
Oscillator Frequency Range
Oscillator Timing Resistor
Oscillator Timing Capacitor
Deadtime Resistor Range
Operating Ambient Temperature Range
Since both the compensation and soft−start terminals
An alternate approach is the use of the shutdown circuitry
(Steady State)
(Peak)
T
T
A
C
= +25 C (Note 1)
= +25 C (Note 2)
Characteristics
Rating
APPLICATION INFORMATION
http://onsemi.com
SG3525A
3
latch is immediately set providing the fastest turn−off signal
to the outputs; and a 150 mA current sink begins to discharge
the external soft−start capacitor. If the shutdown command
is short, the PWM signal is terminated without significant
discharge of the soft−start capacitor, thus, allowing, for
example, a convenient implementation of pulse−by−pulse
current limiting. Holding Pin 10 high for a longer duration,
however, will ultimately discharge this external capacitor,
recycling slow turn−on upon release.
conceivably interrupt normal operation.
Pin 10 should not be left floating as noise pickup could
Symbol
Symbol
T
R
R
V
V
T
Solder
f
R
V
I
P
V
I
R
C
T
osc
T
I
I
qJC
ref
qJA
stg
ref
CC
CC
O
O
A
C
D
J
C
T
D
T
0.001
Min
8.0
4.5
0.1
2.0
0
0
0
0
0
−0.3 to +5.5
−55 to +125
−0.3 to V
Value
1000
2000
+150
+300
+40
+40
100
5.0
500
50
60
CC
Max
400
150
500
+70
0.2
35
35
100
400
20
Unit
Unit
Vdc
Vdc
mW
Vdc
Vdc
kHz
mA
mA
mA
C/W
C/W
mA
mA
kW
mF
V
V
W
C
C
C
C