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Manufacturer Part #


UC3842B Series 30 V 275 KHz High Performance Current Mode Controller - SOIC-14

Mfr. Name: ON Semiconductor
Standard Pkg:
Product Variant Information section
Date Code: 1952
Product Specification Section
Technical Attributes
Attributes Table
Supply Current-Max: 30mA
Supply Voltage: 10V to 30V
Frequency-Max: 275kHz
Topology: Flyback
Rated Power: 862mW
Duty Cycle-Min: 0%
Duty Cycle-Max: 96%
Operating Temp Range: 0°C to 70°C
Storage Temperature Range: -65°C to +150°C
Output Current: -1mA
Thermal Resistance: 145°C/W
Package Style:  SOIC-14
Mounting Method: Surface Mount
Features and Applications

The UC3842BDR2G is a part of UC3842B series current mode controller. It has a storage temperature ranging from -65°C to +150°C and its available in SOIC-14 package.

The UC3842B series are high performance fixed frequency current mode controllers. They are specifically designed for Off-Line and dc-to-dc converter applications offering the designer a cost-effective solution with minimal external components.


  • Trimmed Oscillator for Precise Frequency Control
  • Oscillator Frequency Guaranteed at 250 kHz
  • Current Mode Operation to 500 kHz
  • Automatic Feed Forward Compensation
  • Latching PWM for Cycle−By−Cycle Current Limiting
  • Internally Trimmed Reference with Undervoltage Lockout
  • High Current Totem Pole Output
  • Undervoltage Lockout with Hysteresis
  • Low Startup and Operating Current
  • This is a Pb−Free and Halide−Free Device
Pricing Section
Web Price:
USD Each

$7.00 reeling fee is amortized over the number of components for each reel.
Mini-Reels are a custom product and are non-cancelable and non-returnable.

Product Variant Information section