Texas Instruments TL2843 Current-Mode PWM Controller IC SMD

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The TL2843 family of control integrated circuits provides the functionality required to construct off-line or DC-to-DC fixed-frequency current-mode control schemes with the least number of external components. An undervoltage lockout (UVLO) with a start-up current of less than 1 mA and a precision reference trimmed for accuracy at the error amplifier input are a couple of the internally built circuits.Other internal circuits include logic to ensure latched operation, a pulse-width modulation (PWM) comparator (that also provides current-limit control), and a totem-pole output stage designed to source or sink high-peak current. The output stage, suitable for driving N-channel MOSFETs, is low when it is in the off state.


  • Optimized for Off-Line and DC-to-DC Converters
  • Low Start-Up Current (< 1 mA)
  • Automatic Feed-forward 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
  • 500-kHz Operation
  • Error Amplifier With Low Output Resistance


  • Switching regulators of any polarity
  • Transformer-coupled DC/DC convertors

For More Info. Refer: Datasheet

Brand Texas Instruments
Type PWM Controller
Package Style SMD
Supply Voltage 30V
Supply Current 30mA
Frequency (Max) 500kHz
Operating free-air Temperature Range
–40°C ~ 85°C
Storage Temperature Range –65°C ~ 150°C
Country of Origin China

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