NJM2375

NJM2375/A POWER FACTOR CONTROLLER ■ GENERAL DESCRIPTION The NJM2375/A are active power factor controllers, which limit the harmonic current resulting from the power supply block of electrical devices. They include a startup timer, an one quadrant multiplier, a zero current detector to ensure critical condition operation, a transconductance error amplifier, high precision reference, a current sensing comparator, and a totem pole output ideally suited for driving a power MOSFET. They also contain protection circuits for overvoltage, cycle-by-cycle overcurrent, and maximum peak current. The startup threshold of NJM2375A is lower than that of NJM2375. ■ FEATURES ● Overvoltage Comparator Eliminates Runaway Output Voltage ● Internal Quick Start ● Internal Startup Timer ● One Quadrant Multiplier ● Zero Current Detector ● High Precision Reference (±2%) ● Totem Pole Output with High State Clamp ● Undervoltage Lockout (Startup Threshold/NJM2375:13V typ., NJM2375A:10.4V typ.) ● Low Startup and Operating Current ● Bipolar Technology ● Package Outline DIP8,DMP8,SSOP14,SIP8 ■ PACKAGE OUTLINE NJM2375D/AD NJM2375M/AM NJM2375V/AV NJM2375L/AL ■ PIN CONFIGURATION NJM2375D/AD NJM2375M/AM NJM2375V/AV Ver.2003-07-18 NJM2375L/AL PIN FUNCTION 1. MULT 2. NC 3. CSENSE 4. NC 5. DZERO 6. NC 7. GND 8. DRIVE 9. NC 10. V+ 11. NC 12. VFB 13. NC 14. COMP PIN FUNCTION 1. VFB 2. COMP 3. MULT 4. CSENSE 5. DZERO 6. GND 7. DRIVE 8. V+ -1- NJM2375/A ■ BLOCK DIAGRAM ■ ABSOLUTE MAXIMUM RATINGS (Ta=25°...