KA3501 is a SMPS (Switching Power Supply) on the secondary side of the complete housekeeping circuit used. This IC (Integrated Circuit) contains a precision voltage reference, protection circuits and a power good signal generator. It also has a high current drive output combined with an external "skid" thyristor. The reference voltage is trimmed to the correct output voltage to ±2...
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L6610 is a control and housekeeping IC developed by BCD technology; it is a switching power supply for desktop computers or servers in the secondary side, in the presence of standard voltage rails, (+3.3 V, ± 5V, ± 12V) by the main converter and Auxiliary converters are generated by the power lines. Typical application circuits are shown on the front page. The main function of housek...
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The LM1946 provides superior designer common transistor or comparator based circuits for over or under current limit detection in industrial or automotive systems. Each of the 5 independent comparisons can be used for the display as an overcurrent or under current limit detector for an individual load. Two comparators monitoring a single load can act as a current window monitor. Current is m...
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CAT1161/2 is a complete memory and supervisory microcontroller based system solution. Serial EEPROM memory (16K) with hardware memory write protection, with Brown's system power monitor out protection and a watchdog timer integrated in low power CMOS technology. The memory interface is through the I2C bus. A 1.6 second watchdog circuit returns the system to a known good sta...
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The FAN7680 is a complete regulated output circuit for switching mode secondary side use of power supplies. It provides over voltage protection (OVP), under voltage protection (UVP), fault protected output (FPO), remote on/off (PSON), latch-up, internal delay circuit and power good signal generator to monitor and control switching power supplies system output. As for output cont...
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The UCC1800/1/2/3/4/5 family of high-speed, low-power integrated circuits contains all the control and driver components required for off-line DC-DC fixed-frequency current-mode switching power supplies expected with minimal parts. These devices have the same pin configuration as the UC1842/3/4/5 family and also offer the additional functions of full-cycle soft-start internal current se...
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UC3823A & B and UC3825A PWM control ICs and B family improved versions of the standard UC3823 and UC3825 series. Performance enhancements have been made to several circuit blocks. The error amplifier gain-bandwidth product is 12MHz, and the input offset voltage is 2mV. The current limit threshold is guaranteed to a 5% tolerance. The discharge current of the oscillator is co...
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The UTC TL1451 integrates all functions required for construction in two Pulse Width Modulation (PWM) control circuits on a single chip. Mainly designed for power control, the TL1451 contains an on-chip 2.5V regulator, two error amplifiers, an adjustable oscillator, two dead-time comparators, an under-voltage lockout circuit, and a dual common-emitter output transistor circuit. Fe...
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describe UTC UC3842A/3843A provide the necessary functions to implement off-line or DC to DC fixed frequency current mode, with a minimum number of external control switching circuit parts Features *Low external component count. *Low start-up current (0.12mA typical) *Automatic feedforward compensation *Pulse by pulse current limit * Undervoltage lockout hysteresis *Double pulse...
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The UTC TL1451 integrates all functions required for construction in two Pulse Width Modulation (PWM) control circuits on a single chip. Mainly designed for power control, the TL1451 contains an on-chip 2.5V regulator, two error amplifiers, an adjustable oscillator, two dead-time comparators, an under-voltage lockout circuit, and a dual common-emitter output transistor circuit. Fe...
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The high frequency PWM control IC UC1825 series is most suitable for switching power supply applications. Special attention is paid to error amplifiers by comparing to minimize propagation delay and logic circuits while maximizing bandwidth and slew rate. The controller is designed for use in either current input voltage capable mode or voltage mode feeds. Protection circuitry includes ...
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