Product details

Topology Push-Pull Duty cycle (Max) (%) 49 UVLO thresholds on/off (V) 12.5/8.3 Features Error Amplifier, Multi-topology, Soft Start Operating temperature range (C) 0 to 70 Rating Catalog Gate drive (Typ) (A) 1
Topology Push-Pull Duty cycle (Max) (%) 49 UVLO thresholds on/off (V) 12.5/8.3 Features Error Amplifier, Multi-topology, Soft Start Operating temperature range (C) 0 to 70 Rating Catalog Gate drive (Typ) (A) 1
SOIC (D) 8 19 mm² 3.91 x 4.9
  • Dual Output Drive Stages in Push-Pull
    Configuration
  • 130-µA Typical Starting Current
  • 1-mA Typical Run Current
  • Operation to 1-MHz
  • Internal Soft-Start
  • On-Chip Error Amplifier With 2-MHz Gain
    Bandwidth Product
  • On-Chip VDD Clamping
  • Output Drive Stages Capable Of 500-mA Peak
    Source Current, 1-A Peak Sink Current
  • Dual Output Drive Stages in Push-Pull
    Configuration
  • 130-µA Typical Starting Current
  • 1-mA Typical Run Current
  • Operation to 1-MHz
  • Internal Soft-Start
  • On-Chip Error Amplifier With 2-MHz Gain
    Bandwidth Product
  • On-Chip VDD Clamping
  • Output Drive Stages Capable Of 500-mA Peak
    Source Current, 1-A Peak Sink Current

The UCCx808-x is a family of BiCMOS push-pull, high-speed, low-power, pulse-width modulators. The UCCx808 contains all of the control and drive circuitry required for offline or DC-to-DC fixed frequency current-mode switching power supplies with minimal external parts count.

The UCCx808-x dual output drive stages are arranged in a push-pull configuration. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 60 ns to 200 ns depending on the values of the timing capacitor and resistors, thus limiting each output stage duty cycle to less than 50%.

The UCCx808-x is a family of BiCMOS push-pull, high-speed, low-power, pulse-width modulators. The UCCx808 contains all of the control and drive circuitry required for offline or DC-to-DC fixed frequency current-mode switching power supplies with minimal external parts count.

The UCCx808-x dual output drive stages are arranged in a push-pull configuration. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 60 ns to 200 ns depending on the values of the timing capacitor and resistors, thus limiting each output stage duty cycle to less than 50%.

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Type Title Date
* Data sheet UCCx808-x Low Power Current Mode Push-Pull PWM datasheet (Rev. E) PDF | HTML 31 Aug 2015
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Current Doubler Rectifier Offers Ripple Current Cancellation 21 Sep 2004

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