LT1245 - High Speed Current Mode Pulse Width Modulators

Features
  • Low Start-Up Current: <250µA
  • 50ns Current Sense Delay
  • Current Mode Operation: To 500kHz
  • Pin Compatible with UC1842 Series
  • Undervoltage Lockout with Hysteresis
  • No Cross-Conduction Current
  • Trimmed Bandgap Reference
  • 1A Totem Pole Output
  • Trimmed Oscillator Frequency and Sink Current
  • Active Pull-Down on Reference and Output During Undervoltage Lockout
  • High Level Output Clamp: 18V
  • Current Sense Leading Edge Blanking
Typical Application
Applications
  • Off-Line Converters
  • DC/DC Converters
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LT1245CN8#PBFN-8C$2.33$1.95
LT1245CS8#PBFSO-8C$2.58$2.20
LT1245CS8#TRPBFSO-8C$2.26
LT1245IN8#PBFN-8I$2.58$2.20
LT1245IS8#PBFSO-8I$2.83$2.40
LT1245IS8#TRPBFSO-8I$2.46
Datasheet
Reliability Data
LTspice
Related Product
LT1241 Series - High Speed Current Mode Pulse Width Modulators
R293 Reliability Data
LT1245 Footprints and Symbols
LT1245 Demo Circuit - 300kHz Off-Line Power Supply (152V-57V to 20V @ 1.5A)