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Description:

The UC2843BN provide the features that are necessary to implement off-line or DC-to-DC fixed-frequency current-mode control schemes, with a minimum number of external components. The internally implemented circuits include an undervoltage lockout (UVLO), featuring a start-up current of less than 1 mA, and a precision reference trimmed for accuracy at the error amplifier input. Other internal circuits include logic to ensure latched operation, a pulse-width modulation (PWM) comparator that also provides current-limit control, and a totem-pole output stage that is designed to source or sink high-peak current. The output stage, suitable for driving N-channel MOSFETs, is low when it is in the off state.


Included:

  • 3 x UC2843BN

This item features:

  • Optimized for off-line and DC-to-DC converters
  • Low start-up current (< 1 mA)
  • Automatic feedforward compensation
  • Pulse-by-pulse current limiting
  • Enhanced load-response characteristics
  • Undervoltage lockout with hysteresis
  • Double-pulse suppression
  • High-current totem-pole output
  • Internally trimmed bandgap reference
  • Up to 500-kHz operation
  • Error amplifier with low output resistance
Condition:
  • New and Authentic Component(s) - STMicroelectronics UC2843BN 30-V, 1-A, 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle, -40C to 85C
  • Friendly Note: Be mindful of the many, inexpensive, counterfeits available on the market.

Shipping and general details:

  • Shipping is free in the United States and shipped via USPS First Class.
  • We do our best to offer you great pricing.
  • Orders are packaged in custom-cut (dependent on quantity of chips ordered) anti-static tubes, providing excellent ESD protection.
  • 30-Day Return Policy.
  • We are expanding on a daily basis. If you do not see the part, or quantity of the part, you are looking for, please, let us know. We will do our best to accommodate you.