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UC3846NG4 Datasheet(PDF) 10 Page - Texas Instruments

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Part No. UC3846NG4
Description  Current Mode PWM Controller
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
Logo TI1 - Texas Instruments

UC3846NG4 Datasheet(HTML) 10 Page - Texas Instruments

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UC1846, UC1847, UC2846
UC2847, UC3846, UC3847
SLUS352C – JANUARY 1997 – REVISED DECEMBER 2015
www.ti.com
7.4 Device Functional Modes
7.4.1 Current Limit
One of the most attractive features of a current-mode converter is the ability to limit peak-switch currents on a
pulse-by-pulse basis by simply limiting the error voltage to a maximum value.
7.4.2 Shutdown
The shutdown circuit was designed to provide a fast acting general purpose shutdown port for use in
implementing both protection circuitry and remote shutdown functions. The circuit may be divided into an input
section consisting of a comparator with a 350-mV temperature compensated offset, and an output section
consisting of a three transistor latch. Shutdown is accomplished by applying a signal greater than 350 mV to pin
16, causing the output latch to fire, and setting the PWM latch to provide an immediate signal to the outputs.
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Copyright © 1997–2015, Texas Instruments Incorporated
Product Folder Links: UC1846 UC1847 UC2846 UC2847 UC3846 UC3847


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