• 2022-09-24 23:33:15

The UCC3858 provides all the necessary control functions for active power factor correction preregulators requiring high efficiency low power operation. A nearby power factor controller implementation shapes the AC input current waveform to correspond to the line voltage of the AC input using average current mode control. The operation of the UCC3858 is very similar to the previous de...

• 2022-09-24 23:33:15

UTC KA7524 provides the necessary functions to implement electronic ballast control and SMPS active power factor correction circuit design application Features *Internal self-start *Micro power start mode *Includes undervoltage lockout circuitry *Internal reference 1% * High output current: 500mA peak

• 2022-09-24 23:33:15

The L6562 is a current mode PFC controller operating in Transition Mode (TM). Pin-to-pin compatible with the predecessor L6561, it offers improved performance. Features Realization BCD technology PFC PREREGULATORS controlled by switching mode ■Proprietary multiplier design for minimum total harmonic distortion AC input current ■Very accurate adjustable OUTP...

• 2022-09-24 23:33:15

Features Over a wide load range with line current average High power factor operation without switching transient overvoltage protection Minimum line current deadband typical 250mA Start-up supply current suppresses line switching noise Synchronization capability Low quiescent current: 9mA fast 1.5A Peak Current Gate Driver The LT®1248 provides active power factor correction for ...

• 2022-09-24 23:33:15

The LX1562 is a second generation power factor correction family controller using a discontinuous mode operation. They optimize electronic ballast applications. Many improvements have been made to the original SG3561A controller introduced by Silicon General Semiconductor in 1992. New features include the addition of an internal start-up circuit, eliminating bulky external components w...

• 2022-09-24 23:33:15

The MC33368's active power factor controller is used as a feature to improve preconverter in off-line power supply applications. The MC33368 is optimized for low power consumption, requiring a high density power supply with minimal board area, reduced component count and low power dissipation. Narrow body SOIC packages offer a small footprint. The integrated high voltage startup sa...

• 2022-09-24 23:33:15

The NCP345 overvoltage protection circuit (OVP) protects sensitive electronic circuits from overvoltage transients and power supply failures when used in conjunction with external P-channel FETs. The device is designed to sense overvoltage conditions and quickly disconnect before any input voltage supplied to the load may be damaged. Overvoltage protection consists of an accurate volt...

• 2022-09-24 23:33:15

Features IC sinusoidal line current consumption power factor close to 1 Control Boost Active Harmonic Filter Converter Direct Drive SIPMOS Transistor Zero-Crossing Detector, Variable Frequency Continuous Mode of Operation 110/220 V AC operation without switching standby 0.5 mA current consumption The TDA4817 contains all the functions to supply sinusoidal line cur...

• 2022-09-24 23:33:15

The CAT5111 and CAT5113 are 100-tap Digital Programmable Potentiometers (DPP™) with a simple 3-wire digital up/down interface for the wiper position setting. Designed to be an electronic replacement for mechanical potentiometers and trimmers, these devices are ideal for systems requiring automatic or self-calibration. Unlike mechanical potentiometers, DPPS operates reliably in ...

• 2022-09-24 23:33:15

The CAT5401 is four digitally programmable potentiometers (POT™) with integrated control logic and 16 bytes of NVRAM memory. Each DPP is accessed externally by connecting two series of 63 resistive elements. The tap point between each resistive element is connected to the wiper output CMOS switch. A separate 6-bit control register ("WR") independently controls the tap swit...

• 2022-09-24 23:33:15

AD5171 is a 64-bit, one-time programmable (OTP) digital potentiometer2, which uses fusing technology to achieve memory retention of the resistance setting function. OTP is a cost-effective alternative to the EEMEM method for new memory settings where the user does not need to reprogram digital potentiometers. This device performs the same electronic adjustment function as most mechan...