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SG3525ADWR2G的详细信息
Manufacturer: | ON Semiconductor |
---|---|
Product Category: | Switching Controllers |
RoHS: | Yes |
Brand: | ON Semiconductor |
Topology: | Half-Bridge, Push-Pull |
Number of Outputs: | 2 |
Switching Frequency: | 400 kHz |
Duty Cycle - Max: | 49 % |
Output Current: | 400 mA |
Maximum Operating Temperature: | + 70 C |
Mounting Style: | SMD/SMT |
Package / Case: | SOIC-16 Wide |
Packaging: | Reel |
Fall Time: | 50 ns |
Minimum Operating Temperature: | 0 C |
Rise Time: | 100 ns |
Series: | SG3525A |
Factory Pack Quantity: | 1000 |
Synchronous Pin: | Yes |
SG3525A
PulseWidthModulator
ControlCircuit
The SG3525A pulse width modulator control circuit offers
improved performance and lower external parts count when
implemented for controlling all types of switching power supplies.
The on−chip +5.1 V reference is trimmed to "1% and the error
amplifier has an input common−mode voltage range that includes the
reference voltage, thus eliminating the need for external divider
resistors. A sync input to the oscillator enables multiple units to be
slaved or a single unit to be synchronized to an external system clock.
A wide range of deadtime can be programmed by a single resistor
16
PDIP−16
N SUFFIX
CASE 648
1
SG3525AN
AWLYYWW
connected between the C and Discharge pins. This device also
T
features built−in soft−start circuitry, requiring only an external timing
capacitor. A shutdown pin controls both the soft−start circuitry and the
output stages, providing instantaneous turn off through the PWM latch
with pulsed shutdown, as well as soft−start recycle with longer
shutdown commands. The under voltage lockout inhibits the outputs
16
1
16
and the changing of the soft−start capacitor when V
is below
CC
SOIC−16L
DW SUFFIX
CASE 751G
16
SG3525A
AWLYYWW
nominal. The output stages are totem−pole design capable of sinking
and sourcing in excess of 200 mA. The output stage of the SG3525A
features NOR logic resulting in a low output for an off−state.
1
1
Features
A
= Assembly Location
• 8.0 V to 35 V Operation
WL = Wafer Lot
YY = Year
WW = Work Week
• 5.1 V " 1.0% Trimmed Reference
• 100 Hz to 400 kHz Oscillator Range
• Separate Oscillator Sync Pin
• Adjustable Deadtime Control
• Input Undervoltage Lockout
PIN CONNECTIONS
• Latching PWM to Prevent Multiple Pulses
• Pulse−by−Pulse Shutdown
• Dual Source/Sink Outputs: "400 mA Peak
• Pb−Free Packages are Available*
Inv.Input
Noninv.Input
Sync
V
V
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
ref
CC
OutputB
OSC.Output
V
C
C
T
Ground
R
T
OutputA
Discharge
Soft−Start
Shutdown
Compensation
(TopView)
ORDERING INFORMATION
dimensions section on page 2 of this data sheet.
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
Semiconductor Components Industries, LLC, 2005
1
Publication Order Number:
January, 2005 − Rev. 5
SG3525A/D
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