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UC2965

Features: • Accessible 2.5V Precision Reference• 0.4% Initial Reference Accuracy• 1% Reference Accuracy over Line, Load, and Full Temperature Range• Low 1mV Offset Error Amplifier• Supports Closed Loop Soft Start• 2X Inverting Amplifier / Buffer Output• 4....

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SeekIC No. : 004535536 Detail

UC2965: Features: • Accessible 2.5V Precision Reference• 0.4% Initial Reference Accuracy• 1% Reference Accuracy over Line, Load, and Full Temperature Range• Low 1mV Offset Error Ampl...

UC2965 Data Sheet

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Part Number:
UC2965
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:

• Accessible 2.5V Precision Reference
• 0.4% Initial Reference Accuracy
• 1% Reference Accuracy over Line,
  Load, and Full Temperature Range
• Low 1mV Offset Error Amplifier
• Supports Closed Loop Soft Start
• 2X Inverting Amplifier / Buffer Output
• 4.1V Undervoltage Lockout
• ICC 2mA at 5V
• 8-Pin SOIC or DIL Package


Pinout

Connection Diagram


Specifications

VCC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3V to 20V
VREF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3V to 6V
VFB, COMP, NI, VOUT. . . . . . . . . . . . . . . . . . . . . . . 0.3V TO 6V
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 the specified terminal.
All voltages are with respect to ground. Consult Packaging Section
of Databook for thermal limitations and considerations of
packages.


Description

The UC3965 is suitable for applications needing greater precision and more functionality than the TL431 type shunt regulators. The wide range VCC input capability enables the device to be biased from the secondary side output voltage rail, resulting in closed loop soft start.

The UC3965 includes an accessible 2.5V precision reference which offers 0.4% initial and 1% reference accuracy over line, load, and full temperature range with a low offset error amplifier, a 2X inverting amplifier/buffer, and an undervoltage lockout circuit. The IC is ideally suited for applications where high precision PWM power supply regulation is required. Typically, the error amplifier is configured to compare a fraction of the to be regulated power supply voltage to the on-chip 2.5V reference. The 2X amplifier/buffer output is then used to drive a PWM controller or regulator. The UC3965 is also capable of driving an optocoupler diode for isolated applications.




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