LAB
TOP VIEW
COMP 1 V FB 2 I SENSE 3 R T /C T 4
8 7 6 5
SEME
IP1842A SERIES IP1843A SERIES
VREF VCC OUTPUT GROUND
CURRENT MODE REGULATING PULSE WIDTH MODULATORS
FEATURES
• • • • • • Guaranteed ±1% reference
voltage tolerance Accurate oscillator discharge current Guaranteed ±10% frequency tolerance Low start–up current (500 mA) Under
voltage lockout with hysteresis Output state completely defined for all supply and input conditions • Interchangeable with IP and UC1842/3 series for improved operation • 500kHz Oscillator operation
J Package – 8 Pin Ceramic DIP N Package – 8 Pin Plastic DIP D-8 Package – 8 Pin Plastic (150) SOIC TOP VIEW
COMP 1 N/C
2 14 13 12 11 10 9 8
VREF N/C VCC VC OUT...