LED2001PHR datasheet(21/42 Pages) STMICROELECTRONICS

Part #	LED2001PHR

Description	4 A monolithic step-down current source with synchronous rectification

PDF	42 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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DocID024346 Rev 1

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LED2001

Application notes

Figure 13. Dimming signal

For example, assuming a 1 kHz dimming frequency the maximum dimming depth is 5% or,

given a 2% dimming depth, it follows a 200 Hz maximum fDIM.

The LED2001 dimming performance is strictly dependent on the system small signal

response. As a consequence, an optimized compensation (good phase margin and

bandwidth maximized) and minimized COUT value are crucial for the best performance.

6.7

eDesign studio software

The LED2001 is supported by the eDesign software which can be viewed online at

www.st.com.

Figure 14. eDesign studio screenshot

The software easily supports the component sizing according to the technical information

given in this datasheet (see Section 6 and Section 7).

The end user is requested to fill in the requested information such as the input voltage

range, the selected LED parameters and the number of LEDs composing the row.

AM12904v1

LED2001PHR Datasheet(PDF) 21 Page - STMicroelectronics