LM2267x/LM22680 SIMPLE SWITCHER® Series


LM2267x/LM22680 SIMPLE SWITCHER Regulators from National Semiconductor


National Semiconductor - LM2267x/LM22680 SIMPLE SWITCHER® Series
National's LM2267x/LM22680 SIMPLE SWITCHER Step-Down Regulator Series has numerous enhancements and improvements over the LM267x Regulators. They include an input range down to 4.5V, tighter output accuracy, adjustable switching frequency, a precision enable, and thermally enhanced green packages. These devices provide fast and easy design-in while delivering performance and flexibility to meet a project's design and application requirements.
   Features
  • Wide input voltage range from 4.5V to 42V
  • Load currents from 0.5A to 5A
  • Adjustable and fixed output voltages
  • Adjustable and fixed switching frequencies (up to 1MHz) for optimal size and efficiency
  • External soft start
  • Precision enable
  • Internally compensated voltage mode control minimizes external component count
  • VOUT accurate within 2.0%, worst case
  • Adjustable current limit
  • Frequency sync up to 1MHz
  • PSOP-8 and TO263-7 THIN packages

Tube packaging
** Available in Tape & Reel (TR-ND), Cut Tape (CT-ND), and custom Digi-Reel® (DKR-ND)
Digi-Key Part Number Voltage - Output Current - Output Package  
    *   LM22670MR-ADJ-ND Adj to 1.285V 3A 8-SOIC (0.154", 3.90mm Width)
Exposed Pad
LM22670 Datasheet
    **  LM22671MRE-5.0CT-ND 5V 500mA 8-SOIC (0.154", 3.90mm Width)
Exposed Pad
LM22671 Datasheet
    **  LM22671MRE-ADJCT-ND Adj to 1.285V 500mA 8-SOIC (0.154", 3.90mm Width)
Exposed Pad
LM22671 Datasheet
    **  LM22677TJE-5.0CT-ND 5V 5A TO-263-7 Thin LM22677 Datasheet
    **  LM22677TJE-ADJCT-ND Adj to 1.285V 5A TO-263-7 Thin LM22677 Datasheet
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