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UC1845AJQMLV датащи(PDF) 6 Page - Texas Instruments

номер детали UC1845AJQMLV
подробное описание детали  Current Mode PWM Controller
Download  11 Pages
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI - Texas Instruments

UC1845AJQMLV датащи(HTML) 6 Page - Texas Instruments

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UC1842A/3A/4A/5A
UC2842A/3A/4A/5A
APPLICATIONS DATA (cont.)
Open-Loop Laboratory Test Fixture
Oscillator Section
Oscillator Frequency vs Timing Resistance
Maximum Duty Cycle vs Timing Resistor
High peak currents associated with capacitive loads necessi-
tate careful grounding techniques. Timing and bypass capaci-
tors should be connected close to pin 5 in a single point
ground. The transistor and 5k potentiometer are used to sam-
ple the oscillator waveform and apply an adjustable ramp to
pin 3.
Slope Compensation
A fraction of the oscillator ramp can be resistively
summed with the current sense signal to provide slope
compensation for converters requiring duty cycles over
50%.
Note that capacitor, C, forms a filter with R2 to suppress
the leading edge switch spikes.


Аналогичный номер детали - UC1845AJQMLV

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Аналогичное описание - UC1845AJQMLV

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