MC33025: Up-to-1 MHz Dual Output (Push-pull or H-Bridge) Voltage-or-Current-Mode PWM Controller

Description: The MC34025 series are high speed, fixed frequency...
  • The MC34025 series are high speed, fixed frequency, double-ended pulse width modulator controllers optimized for high frequency operation. They are specifically designed for Off-Line and DC-to-DC converter applications offering the designer a cost effective solution with minimal external components. These integrated circuits feature an oscillator, a temperature compensated reference, a wide bandwidth error amplifier, a high speed current sensing comparator, steering flip-flop, and dual high current totem pole outputs ideally suited for driving power MOSFETs.

    Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle-by-cycle current limiting, and a latch for single pulse metering.

    The flexibility of this series allows it to be easily configured for either current mode or voltage mode control.
  • Features
  • 50 ns Propagation Delay to Outputs
  • Dual High Current Totem Pole Outputs
  • Wide Bandwidth Error Amplifier
  • Fully-Latched Logic with Double Pulse Suppression
  • Latching PWM for Cycle-By-Cycle Current Limiting
  • Soft-Start Control with Latched Overcurrent Reset
  • Input Undervoltage Lockout with Hysteresis
  • Low Start-Up Current (500 mA Typ)
  • Internally Trimmed Reference with Undervoltage Lockout
  • 45% Maximum Duty Cycle (Externally Adjustable)
  • Precision Trimmed Oscillator
  • Voltage or Current Mode Operation to 1.0 MHz
  • Functionally Similar to the UC3825 Simplified
  • Pb-Free Packages are Available
  • Technical Documentation & Design Resources
    Product Change Notification
    Availability and Samples
    MC33025DWG
  • Status: Active, Not Rec
  • Compliance: Pb-free Halide free 
  • Description: Up-to-1 MHz Dual Output (Push-pull or H-Bridge) Voltage-or-Current-Mode PWM Controller
  • Package Type: SOIC-16W
  • Package Case Outline: 751G-03
  • MSL: 3
  • Container Type: TUBE
  • Container Qty: 47
  • Inventory

  • Market Leadtime (weeks):8 to 12
  • Arrow:0
  • Digikey:<1K
  • MC33025DWR2G
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Up-to-1 MHz Dual Output (Push-pull or H-Bridge) Voltage-or-Current-Mode PWM Controller
  • Package Type: SOIC-16W
  • Package Case Outline: 751G-03
  • MSL: 3
  • Container Type: REEL
  • Container Qty: 1000
  • Inventory

  • Market Leadtime (weeks):13 to 16
  • Arrow:0
  • ON Semiconductor:16,000
  • MC33025PG
  • Status: Last Shipments
  • Compliance: Pb-free Halide free 
  • Description: Up-to-1 MHz Dual Output (Push-pull or H-Bridge) Voltage-or-Current-Mode PWM Controller
  • Package Type: PDIP-16
  • Package Case Outline: 648-08
  • MSL: NA
  • Container Type: TUBE
  • Container Qty: 25
  • Packages
    Specifications
  • Topology: Push-Pull 
  • Control Mode: Current/Voltage Mode 
  • fsw Typ (kHz): 1000 
  • Stand-by Mode: No 
  • UVLO (V): Yes 
  • Short Circuit Protection: Yes 
  • Latch: No 
  • Soft Start: Yes 
  • VCC Max (V): 30 
  • Drive Cap. (mA): 200 / 200 
  • Package Type: SOIC-16W 
  • ON Semiconductor Full Web Site