AN1882 datasheet(28/30 Pages) STMICROELECTRONICS

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AN1882 Scheda tecnica(PDF) 28 Page - STMicroelectronics

Il numero della parte	AN1882

Spiegazioni elettronici	This application note details the main features

PDF	30 Pages

Scroll/Zoom	100%

Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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28 / 30 page

Application ideas

AN1882

28/30

Doc ID 10209 Rev 4

Figure 27.

PWM brightness control

Figure 28.

Analog brightness control

Both of solutions change the output current by changing then FB voltage. In the

Figure 26 is

used a DC voltage; instead in the

Figure 27 is used the average voltage coming from the

PWM signal.

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