UC3843BP-S08-R datasheet(7/11 Pages) UTC

номер детали	UC3843BP-S08-R

подробное описание детали	HIGH PERFORMANCE CURRENT MODE CONTROLLERS

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производитель	UTC [Unisonic Technologies]

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7 / 11 page

UC3842B/3843B

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

7 of 11

www.unisonic.com.tw

QW-R103-012.D

APPLICATION INFORMATION(Cont.)

Current Sense Circuit

Peak current (IS) is equaled:

IS(MAX)=1.0V/RS

There should be a small RC filter to suppress switch transients.

Oscillator Waveforms and Maximum Duty Cycle

8

5

4

VREF

RT/RC

GND

CT

RT

INTERINAL CLOCK

V4

LARGE RT

SMALL CT

LARGE RT

CT (Oscillator timing capacitor) can be charged by VREF through RT and discharged by an internal current source. At

discharge time, the internal clock signal blanks the output to the low. Both oscillator frequency and maximum duty

cycle can be determined by Selection of RT and CT. All charge and discharge times can be calculated by the next

formulas:

tC=0.55 RT CT

tD=RTCTIn

⎟⎟

⎠

⎞

⎜⎜

⎝

⎛

−

4

0.0063R

2.7

0.0063R

T

Аналогичный номер детали - UC3843BP-S08-R

производитель	номер детали	датащи	подробное описание детали
Unisonic Technologies	UC3843BP-S08-R	439Kb / 10P	HIGH PERFORMANCE CURRENT MODE CONTROLLERS
Unisonic Technologies	UC3843BP-S08-R	490Kb / 11P	HIGH PERFORMANCE CURRENT MODE CONTROLLERS

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Аналогичное описание - UC3843BP-S08-R

производитель	номер детали	датащи	подробное описание детали
Motorola, Inc	UC3842B	401Kb / 16P	HIGH PERFORMANCE CURRENT MODE CONTROLLERS
Freescale Semiconductor...	MC34129EF	444Kb / 16P	high performance current mode controllers
ON Semiconductor	UC3844BNG	399Kb / 19P	High Performance Current Mode Controllers August, 2013 ??Rev. 11
	UC3845BDR2G	387Kb / 19P	High Performance Current Mode Controllers December, 2012 ??Rev. 11
	UC3845BVDG	399Kb / 19P	High Performance Current Mode Controllers August, 2013 ??Rev. 11
	UC3845BVDR2G	399Kb / 19P	High Performance Current Mode Controllers August, 2013 ??Rev. 11
	UC3844BVDG	399Kb / 19P	High Performance Current Mode Controllers August, 2013 ??Rev. 11
Motorola, Inc	UC3844	376Kb / 14P	HIGH PERFORMANCE CURRENT MODE CONTROLLERS
ON Semiconductor	UC3842A	399Kb / 14P	HIGH PERFORMANCE CURRENT MODE CONTROLLERS 1996 REV 1
ON Semiconductor	UC3844	376Kb / 14P	HIGH PERFORMANCE CURRENT MODE CONTROLLERS 1996 REV 1

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UC3843BP-S08-R датащи(PDF) 7 Page - Unisonic Technologies

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Аналогичный номер детали - UC3843BP-S08-R

Аналогичное описание - UC3843BP-S08-R

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