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UC3584

Features: · Practical Operation at Switching Frequencies up to 1MHz· Wide Band Error Amplifier· Undervoltage Lockout with Hysteresis· Output Active Low During UVLO· Soft Start/Maximum Duty Cycle Control· Trimmed Bandgap Reference· Internally Regulated 15V Boost Supply· Short Circuit Protection wit...

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SeekIC No. : 004535563 Detail

UC3584: Features: · Practical Operation at Switching Frequencies up to 1MHz· Wide Band Error Amplifier· Undervoltage Lockout with Hysteresis· Output Active Low During UVLO· Soft Start/Maximum Duty Cycle Con...

UC3584 Data Sheet

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Part Number:
UC3584
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

· Practical Operation at Switching Frequencies up to 1MHz
· Wide Band Error Amplifier
· Undervoltage Lockout with Hysteresis
· Output Active Low During UVLO
· Soft Start/Maximum Duty Cycle Control
· Trimmed Bandgap Reference
· Internally Regulated 15V Boost Supply
· Short Circuit Protection with Programmable Delay


Pinout

Connection Diagram


Specifications

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 20V
VFLT Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . .50V, 30V at 2A
Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA
Analog Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 to 20V
SYNC Maximum Sink Current . . . . . . . . . . . . . . . . . . . . . 600A
PWM Driver, IOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 300mA
PWM Driver, IOUT (Peak). . . . . . . . . . . . . . . . . . . . . . . . ± 1.5A
Maximum Operating Frequency . . . . . . . . . . . . . . . . . . .  1MHz
Power Dissipation at TA = 60°C . . . . . . . . . . . . . . . . . . . . .1W
Storage Temperature . . . . . . . . . . . . . . . . . .65°C to 150°C
Junction Temperature . . . . . . . . . . . . . . . . . .55°C to 150°C
Lead Temperature (Soldering, 10 sec.) . . . . . . . . . . . .. .300°C

Currents are positive into, negative out of specified terminal.
Consult Packaging Section of Databook for thermal limitations and considerations of packages.


Description

The UC3584 is a low voltage, Secondary Side Synchronous Post Regulator. It is intended to be used for auxiliary output voltage regulation in single secondary winding, multiple output power supplies (for more details refer to the Application Section of this Data sheet). The UC3584 is most suited for systems where the main output is regulated between 5V and 14V. Output voltages regulated by the UC3584 can range from virtually 0V up to the output voltage of the main output.

Auxiliary output voltage regulation with the UC3584 uses leading edge modulation making it compatible to primary side peak current or voltage mode control. The UC3584 clock circuit is synchronized to the switching frequency utilizing the falling edge of the transformer's secondary winding waveform.




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