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UCC2813-0 Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers

Part No. UCC2813-0
Description  Low Power Economy BiCMOS Current Mode PWM
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UCC2813-0 Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers

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UCC2813-0/-1/-2/-3/-4/-5
UCC3813-0/-1/-2/-3/-4/-5
SLUS161A - APRIL 1999 - REVISED JANUARY 2005
FEATURES
• 100
mA Typical Starting Supply Current
• 500
mA Typical Operating Supply Current
• Operation to 1MHz
• Internal Soft Start
• Internal Fault Soft Start
• Internal Leading-Edge Blanking of the
Current Sense Signal
• 1 Amp Totem-Pole Output
• 70ns Typical Response from
Current-Sense to Gate Drive Output
• 1.5% Tolerance Voltage Reference
• Same Pinout as UCC3802, UC3842, and
UC3842A
DESCRIPTION
The UCC3813-0/-1/-2/-3/-4/-5 family of high-speed, low-power inte-
grated circuits contain all of the control and drive components required
for off-line and DC-to-DC fixed frequency current-mode switching power
supplies with minimal parts count.
These devices have the same pin configuration as the UC3842/3/4/5
family, and also offer the added features of internal full-cycle soft start
and internal leading-edge blanking of the current-sense input.
The UCC3813-0/-1/-2/-3/-4/-5 family offers a variety of package options,
temperature range options, choice of maximum duty cycle, and choice
of critical voltage levels. Lower reference parts such as the UCC3813-3
and UCC3813-5 fit best into battery operated systems, while the higher
reference and the higher UVLO hysteresis of the UCC3813-2 and
UCC3813-4 make these ideal choices for use in off-line power supplies.
The UCC2813-x series is specified for operation from –40°C to +85°C
and the UCC3813-x series is specified for operation from 0°C to +70°C.
BLOCK DIAGRAM
Low Power Economy BiCMOS Current Mode PWM
UDG-96134
application
INFO
available
Part Number
Maximum Duty Cycle
Reference Voltage
Turn-On Threshold
Turn-Off Threshold
UCCx813-0
100%
5V
7.2V
6.9V
UCCx813-1
50%
5V
9.4V
7.4V
UCCx813-2
100%
5V
12.5V
8.3V
UCCx813-3
100%
4V
4.1V
3.6V
UCCx813-4
50%
5V
12.5V
8.3V
UCCx813-5
50%
4V
4.1V
3.6V
ORDERING INFORMATION


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