UC2844A

ACTIVE

30-V, 1A, 500KHz current mode PWM controller with 16V/10V UVLO 50% duty cycle, 40°C to 85°C

Product details

Vin (max) (V) 28 Operating temperature range (°C) -40 to 125 Control mode Peak current mode Topology Boost, Buck, Buck boost, Flyback, Forward Rating Automotive, Catalog Features Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Fixed frequency, Multi-topology Duty cycle (max) (%) 50
Vin (max) (V) 28 Operating temperature range (°C) -40 to 125 Control mode Peak current mode Topology Boost, Buck, Buck boost, Flyback, Forward Rating Automotive, Catalog Features Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Fixed frequency, Multi-topology Duty cycle (max) (%) 50
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOIC (D) 14 51.9 mm² 8.65 x 6 SOIC (D) 8 29.4 mm² 4.9 x 6
  • Optimized for Off-Line and DC-DC Converters
  • Low Start-Up Current (< 0.5mA)
  • 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 500kHz Operation
  • Create a Custom Design Using the UCx84xA With the WEBENCH Power Designer
  • Optimized for Off-Line and DC-DC Converters
  • Low Start-Up Current (< 0.5mA)
  • 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 500kHz Operation
  • Create a Custom Design Using the UCx84xA With the WEBENCH Power Designer

The UCx84xA family of control devices is a pin-for-pin compatible improved version of the UCx84x family. Providing the necessary features to control current-mode or switched-mode power supplies, this family of devices has many improved features: startup current is less than 0.5mA, oscillator discharge is trimmed to 8.3mA, and during UVLO, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.

The UCx84xA family of control devices is a pin-for-pin compatible improved version of the UCx84x family. Providing the necessary features to control current-mode or switched-mode power supplies, this family of devices has many improved features: startup current is less than 0.5mA, oscillator discharge is trimmed to 8.3mA, and during UVLO, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.

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UCC28C59 ACTIVE Industrial, 30-V, low-power current-mode PWM controller, 16-V/12.5-V UVLO for SiC, 50% duty cycle Lower startup and supply current, better reference voltage accuracy and faster overcurrent protection

Technical documentation

Design & development

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Simulation model

UCCx8C44 Unencrypted PSpice Transient Model

SLUM532.ZIP (5 KB) - PSpice Model
Package Pins CAD symbols, footprints & 3D models
PDIP (P) 8 Ultra Librarian
SOIC (D) 14 Ultra Librarian
SOIC (D) 8 Ultra Librarian

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