NJM2375

The NJM2375 are active power factor controllers, which limit the harmonic current resulting from the power supply block of electrical devices. NJM2375 includes a startup timer, an one quadrant multiplier, a zero current detector to ensure critical condition operation, a transconductance error ampl ifier, high precision reference, a current nsing comparator, and a totem pole output ideally suited for driving a power MOSFET. NJM2375 also contain protection circuits for overvoltage, cycle-by-cycle overcurrent, and maximum peak current. The startup threshold of JM23l5A is lower than that of NJN2375.

The features of NJM2375 can be summarized as (1)overvoltage comparator eliminates runaway output voltage; (2)internal quick start; (3)internal startup timer; (4)one quadrant multiplier; (5)zero current detector; (6)high precision reference; (7)totem pole output with high state clamp; (8)undervoltage lockout (startup threshold/NJM2375:13V typ., NJM2375A:10.4V typ.); (9)low startup and operating current; (10)bipolar technology; (11)package outline DIP8, DMP8,SSOP14, SIP8.

The absolute maximum ratings of NJM2375 are (1)total power supply and zener current ICC+ IZ: 30mA ; (2)output current (source or sink)IO: 500mA ; (3)current sense, multiplier, and voltage feedback lnputs IN: -1.0~+10V ; (4)zero current detect input high state forward current: 50 mA, low state forward current -10mA; (5)power dissipation PD: (DIP8)500 mW/ (DMP8)300mW/(SSOP14)300mW/(SIP8)700mW; (6)operating temperature range TOPR: -40 ~+85°C; (7)storage temperature range TSTG: -50~+150°C.