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UC1825-SP - HIGH-SPEED PWM CONTROLLER

General Description

The UC1825 PWM control device is optimized for high-frequency switched mode power supply applications.

Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the error amplifier.

Key Features

  • 1.
  • QML-V Qualified, SMD 5962-87681.
  • Rad-Tolerant: 30 kRad (Si) TID (1).
  • Compatible With Voltage- or Current-Mode Topologies.
  • Practical Operation Switching Frequencies to 1 MHz.
  • 50-ns Propagation Delay-to-Output.
  • High-Current Dual Totem Pole Outputs (1.5 A Peak).
  • Wide Bandwidth Error Amplifier.
  • Fully Latched Logic With Double-Pulse Suppression.
  • Pulse-by-Pulse Current Limiting.
  • Soft Start/Maximum Duty-Cycle C.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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UC1825-SP www.ti.com SLUS870A – JANUARY 2009 – REVISED MARCH 2012 RAD-TOLERANT CLASS V, HIGH-SPEED PWM CONTROLLER Check for Samples: UC1825-SP FEATURES 1 • QML-V Qualified, SMD 5962-87681 • Rad-Tolerant: 30 kRad (Si) TID (1) • Compatible With Voltage- or Current-Mode Topologies • Practical Operation Switching Frequencies to 1 MHz • 50-ns Propagation Delay-to-Output • High-Current Dual Totem Pole Outputs (1.5 A Peak) • Wide Bandwidth Error Amplifier • Fully Latched Logic With Double-Pulse Suppression • Pulse-by-Pulse Current Limiting • Soft Start/Maximum Duty-Cycle Control • Undervoltage Lockout With Hysteresis • Low Start-Up Current (1.1 mA) (1) Radiation tolerance is a typical value based upon initial device qualification with dose rate = 10 mrad/sec.