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UC3825A датащи(PDF) 6 Page - Texas Instruments

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номер детали UC3825A
подробное описание детали  High Speed PWM Controller
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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UC3825A датащи(HTML) 6 Page - Texas Instruments

  UC3825A Datasheet HTML 1Page - Texas Instruments UC3825A Datasheet HTML 2Page - Texas Instruments UC3825A Datasheet HTML 3Page - Texas Instruments UC3825A Datasheet HTML 4Page - Texas Instruments UC3825A Datasheet HTML 5Page - Texas Instruments UC3825A Datasheet HTML 6Page - Texas Instruments UC3825A Datasheet HTML 7Page - Texas Instruments UC3825A Datasheet HTML 8Page - Texas Instruments UC3825A Datasheet HTML 9Page - Texas Instruments  
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UC1823A,B/1825A,B
UC2823A,B/2825A,B
UC3823A,B/3825A,B
UVLO, SOFT START AND FAULT MANAGEMENT
Soft start is programmed by a capacitor on the SS pin. At
power up, SS is discharged. When SS is low, the error
amp output is also forced low. As the internal 9
µA source
charges the SS pin, the error amp output follows until
closed loop regulation takes over.
Anytime ILIM exceeds 1.2V, the fault latch will be set and
the output pins will be driven low. The soft start cap is
then discharged by a 250
µA current sink. No more output
pulses are allowed until soft start is fully discharged, and
ILIM is below 1.2V. At this point the fault latch will be re-
set and the chip will execute a soft start.
Should the fault latch be set during soft start, the outputs
will be immediately terminated, but the soft start cap will
not be discharged until it has been fully charged. This re-
sults in a controlled hiccup interval for continuous
fault conditions.
APPLICATIONS INFORMATION (cont.)
PWM APPLICATIONS
ACTIVE LOW OUTPUTS DURING UVLO
The UVLO function forces the outputs to be low and con-
siders both VCC and VREF before allowing the chip to
operate.
Output V and I During UVLO
Simplified Schematic
Current Mode
Voltage Mode
Soft Start and Fault Waveforms
UDG-95107
UDG-95108
UDG-95110
UDG-95109
UDG-95106


Аналогичный номер детали - UC3825A

производительномер деталидатащиподробное описание детали
logo
Texas Instruments
UC3825A TI-UC3825A Datasheet
303Kb / 15P
[Old version datasheet]   High Speed PWM Controller
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[Old version datasheet]   High Speed PWM Controller
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[Old version datasheet]   HIGH-SPEED PWM CONTROLLER
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[Old version datasheet]   HIGH-SPEED PWM CONTROLLER
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Аналогичное описание - UC3825A

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Texas Instruments
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