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Description
The UC3843AD is a current-mode Pulse Width Modulation (PWM) Controller providing the necessary features to control current-mode switched mode power supplies. Start-up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.
Title
PWM Controller, 30V-7.6V supply, 500 kHz, 13.5V/1A out, SOIC-14
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The UC3842A,UC3843A series of high performance fixed frequency current mode controllers are specifically designed for off-line and dc-to-dc converter applications offering the designer a cost effective solution with minimal external components.These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.
Also included are protective features consisting of input and reference under voltage lockouts each with hysteresis, cycle-by-cycle current limiting,programmable output deadtime, and a latch for single pulse metering.
These devices are available in an 8-pin dual-in-line plastic package as well as the 14-pin plastic surface mount (SO-14).The SO-14 package has separate power and ground pins for the totem pole output stage.
The UCx842A has UYLO thresholds of 16 V(on) and 10 V (off), ideally suited for off-line converters. The UCX843A is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).
● Trimmed Oscillator Discharge Current for Precise Duty Cycle Control
● Current Mode Operation to 500 kHz
● Automatic Feed Forward Compensation
● Latching PWM for Cycle-By-Cycle Current Limiting
● Internally Trimmed Reference with Under voltage Lockout
● High Current Totem Pole Output
● Under voltage Lockout with Hysteresis
● Low Startup and Operating Current
● Direct Interface with Motorola SENSEFET Products
Preview of the first 3 pages of the data sheet
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10000 buyer reviews from United States
Brian Clark
Length of registration:7 years
The testing result for the Intergrated Circuits UC3843AD8 ordered from Utsource website was satisfactory. The device was tested for its functionality and it passed all the tests with flying colors. The device was tested for its voltage and current ratings, temperature range, and other parameters and it met all the specified requirements. The device was also tested for its reliability and it perfor
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03/17/2023
Edwin Clavijo Villavicencio
Length of registration:9 years
Very satisfied with
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12/13/2019
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UC3843AD
UC3843AD has several brands around the world that may have alternate names for UC3843AD due to regional differences or acquisition. UC3843AD may also be known as the following names:
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Unit Price:1.48400
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Stop production experts, we can provide a large number of electronic components that have been stopped production and are difficult to find, to facilitate the maintenance company
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