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UC2845A Datasheet (PDF) - Microsemi Corporation

UC2845A Datasheet PDF - Microsemi Corporation
Part # UC2845A
Download  UC2845A Download

File Size   227.95 Kbytes
Page   8 Pages
Manufacturer  MICROSEMI [Microsemi Corporation]
Direct Link  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation
Description CURRENT MODE PWM CONTROLLER

UC2845A Datasheet (PDF)

Go To PDF Page Download Datasheet
UC2845A Datasheet PDF - Microsemi Corporation

Part # UC2845A
Download  UC2845A Click to download

File Size   227.95 Kbytes
Page   8 Pages
Manufacturer  MICROSEMI [Microsemi Corporation]
Direct Link  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation
Description CURRENT MODE PWM CONTROLLER

UC2845A Datasheet (HTML) - Microsemi Corporation

UC2845A Datasheet HTML 1Page - Microsemi Corporation UC2845A Datasheet HTML 2Page - Microsemi Corporation UC2845A Datasheet HTML 3Page - Microsemi Corporation UC2845A Datasheet HTML 4Page - Microsemi Corporation UC2845A Datasheet HTML 5Page - Microsemi Corporation UC2845A Datasheet HTML 6Page - Microsemi Corporation UC2845A Datasheet HTML 7Page - Microsemi Corporation UC2845A Datasheet HTML 8Page - Microsemi Corporation

UC2845A Product details

DESCRIPTION
The UC184xA family of control ICs provides all the necessary features to implement off-line fixed-frequency, current-mode switching power supplies with a minimum of external components. The current mode architecture demonstrates improved load regulation, pulse-by-pulse current limiting and inherent protection of the power supply output switch. The IC includes: A bandgap reference trimmed to ±1% accuracy, an error amplifier, a current sense comparator with internal clamp to 1V, a high current totem pole output stage for fast switching of power MOSFETs, and an externally programmable oscillator to set frequency and maximum duty cycle. The undervoltage lock-out is designed to operate with 250µA typ. start-up current, allowing an efficient bootstrap supply voltage design.

KEY FEATURES
■ LOW START-UP CURRENT. (0.5mA max.)
■ TRIMMED OSCILLATOR DISCHARGE CURRENT. (See Product Highlight)
■ OPTIMIZED FOR OFF-LINE AND DC-TO-DC CONVERTERS.
■ AUTOMATIC FEED FORWARD COMPENSATION.
■ PULSE-BY-PULSE CURRENT LIMITING.
■ ENHANCED LOAD RESPONSE CHARACTERISTICS.
■ UNDER-VOLTAGE LOCKOUT WITH HYSTERESIS.
■ DOUBLE PULSE SUPPRESSION.
■ HIGH-CURRENT TOTEM POLE OUTPUT.
■ INTERNALLY TRIMMED BANDGAP REFERENCE.
■ 500KHz OPERATION.
■ LOW RO ERROR AMPLIFIER.

APPLICATIONS
■ ECONOMICAL OFF-LINE FLYBACK OR FORWARD CONVERTERS.
■ DC-DC BUCK OR BOOST CONVERTERS.
■ LOW COST DC MOTOR CONTROL.




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About Microsemi Corporation


Microsemi Corporation was an American company that specialized in the design and manufacture of semiconductor and system solutions.
The company was founded in 1960 and was headquartered in Aliso Viejo, California.
Microsemi provided a wide range of products including analog and mixed-signal integrated circuits, field-programmable gate arrays (FPGAs), power management and control products, and other semiconductor solutions.
The company's products were used in various applications such as defense and security, aerospace and aviation, industrial, and communications.
Microsemi was known for its expertise in semiconductor technology and its ability to deliver high-quality and reliable products to its customers.
In 2018, Microsemi was acquired by Microchip Technology, a leading provider of microcontroller, mixed-signal, analog, and security products.
The Microsemi brand is no longer in use, but its technology and products continue to be a part of Microchip's portfolio.

*This information is for general informational purposes only, we will not be liable for any loss or damage caused by the above information.




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