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UC2843AD8 +BOM

30-V, 1-A, 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle 40°C to 85°C

UC2843AD8 General Description

The UC2843AD8 stands out for its compatibility and upgrades over the UCx84x family. It boasts a startup current lower than 0.5 mA and an oscillator discharge trimmed to 8.3 mA, catering to the needs of current-mode and switched-mode power supplies. Additionally, during UVLO, the output stage can handle a minimum sink current of 10 mA at a voltage below 1.2 V for VCC exceeding 5 V. These advancements in performance make the UC2843AD8 a dependable option for controlling power supplies effectively

Key Features

  • Optimized for Off-Line and DC-DC Converters
  • Low Start-Up Current (< 0.5 mA)
  • Trimmed Oscillator Discharge Current
  • 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
  • Create a Custom Design Using the UCx84xA With the WEBENCH Power Designer

Specifications

Source Content uid UC2843AD8 Pbfree Code Yes
Part Life Cycle Code Active Pin Count 8
Reach Compliance Code compliant ECCN Code EAR99
HTS Code 8542.39.00.01 Analog IC - Other Type SWITCHING CONTROLLER
Control Mode CURRENT-MODE Control Technique PULSE WIDTH MODULATION
JESD-30 Code R-PDSO-G8 Moisture Sensitivity Level 1
Number of Functions 1 Number of Terminals 8
Peak Reflow Temperature (Cel) 260 Surface Mount YES
Switcher Configuration BUCK-BOOST Technology BIPOLAR
Temperature Grade INDUSTRIAL Terminal Finish Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form GULL WING Terminal Position DUAL
Time@Peak Reflow Temperature-Max (s) NOT SPECIFIED

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