The UC1524, UC2524 and UC3524 integrate all functions required for the construction of a regulated power supply, inverter switching regulator in a single chip. They can also be used as control elements for high power output applications. The UC1524 family is designed for either polarity switching regulators, transformer coupled DC-DC converters, transformer voltage doublers and pola...
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The UC1525A/1527A family of PWM integrated circuits are designed to provide improved performance and reduced external parts count when used in all types of switching power supply designs. The on-chip 5.1 V reference is trimmed to ±1%, and the input common-mode range of the error amplifier includes the reference voltage, eliminating the need for external resistors. The sync input oscill...
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The UC1842/3/4/5 family of control ICs provides the necessary functionality to implement off-line or DC to DC fixed frequency current mode control schemes with minimal external parts count. Internal implementation circuitry includes under-voltage lockout, start-up current less than 1mA, precision reference trimming at the input of the error amplifier, logic accuracy to ensure latched op...
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The UC1842/3/4/5 family of control ICs provides the necessary functionality to implement off-line or DC to DC fixed frequency current mode control schemes with minimal external parts count. Internal implementation circuitry includes under-voltage lockout, start-up current less than 1mA, precision reference trimming at the input of the error amplifier, logic accuracy to ensure latched op...
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UC3823A and UC3823B UC3825AUC3825B is an improved version of the standard UC3823 and UC3825 family of PWM controllers. Several performance enhancing circuit blocks have been made. The gain-bandwidth product of the error amplifier is 12 MHz, while the input offset voltage is 2 mV. The current limit threshold is guaranteed to a 5% tolerance. Oscillator discharge current is ...
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SG1731 is a pulse width modulation circuit control specially designed for DC motors. It provides bidirectional pulse train output amplitude and analog error signal input polarity. The device is used as an element for positioning accuracy and speed control of the motor-driven servo system, as well as audio modulators and amplifiers in use with carrier frequencies up to 350 kHz. The circuit ...
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The SG1844/45 family control ICs provide all the functions required to implement off-line fixed frequency, current mode switching power supplies with a minimum number of external components. The current mode architecture demonstrates improved profile, improved load regulation, pulse bypulse current limiting and inherent protection of the power output switch. Bandgap reference trim ±1% with...
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SG2524, SG3524 combine in a single monolithic power supply suppies inverter switching regulator for all the functions required to build specifications. They can also be used as control elements for high power output applications. The SG3524 family is designed for switching regulators, transformer either polarity coupled DC-DC converters, transformer voltage doublers and polarity conver...
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The SG348xG series of current mode PWM controllers combine high performance with green mode power saving. The SG348xG controllers are fully pin-to-pin compatible with bipolar UC384X devices, but they have improved features and functionality. SG384xG series controllers are compatible with BiCMOS process manufacturing process, enabling the use of low start-up current and operat...
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The MC44603 is an enhanced high performance controller designed for off-line DC-DC converter applications. This device has the unique ability to automatically change the operating mode if the converter output is overloaded, unloaded, or short-circuited, providing the designer with additional protection and improving system reliability. The MC44603 has several notable features when compa...
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The ML4810 and ML4811 high-frequency PWM controllers optimize the use of switching power supplies for power supply designs that operate at frequencies up to 1MHz. “The ML4810/11 contains a unique overload protection circuit which helps limit stress on the output device, perform a soft-start reset reliably. These controllers operate in voltage or current mode and are designed to prov...
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