The LT®1246/LT1247 are 8-pin, fixed frequency, current mode, pulse width modulators. These devices are de signed to be improved plug compatible versions of the industry standard UC1842 PWM circuit. The LT1246/ LT1247 are optimized for off-line and DC/DC converter applications.
APPLICATIONS
■ Off-Line Converters
■ DC/DC Converters
Feature
- Current Mode Operation to 1MHz
- 30ns Current Sense Delay
- <250µA Low Start-Up Current
- Current Sense Leading Edge Blanking
- Pin Compatible with UC1842
- Undervoltage Lockout with Hysteresis
- No Cross-Conduction Current
- Trimmed Bandgap Reference
- 1A Totem Pole Output
Applications
- Off-Line Converters
- DC/DC Converters
