L7987L datasheet(31/41 Pages) STMICROELECTRONICS

部件名	L7987L

功能描述	Adjustable current limitation

PDF	41 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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31 / 41 page

DocID026362 Rev 3

31/41

L7987L

Demonstration board

In this section the L7987L demonstration board is described. The default settings are:



Programmed VOUT = 5 V



Max. IOUT = 2 A



FSW = 500 kHz



VBIAS = VOUT



Soft-start 5.3 ms

Figure 15. L7987L demonstration board schematic

Table 7. L7987L demonstration board component list

Reference

Part

Package

Note

Manufacturer P/N

C1, C2

4.7

F

1210

X7S/100 V/10%

TDK C3225X7S2A475K

C3, C4

F

0805

X7S/100 V/10%

TDK C2012X7S2A105K

F

1210

X5R/16 V/20%

TDK C3225X7S0J476M

C6, C12

N. M.

100 nF

0603

X7R/16 V

680 pF

0603

C0G/50 V

6.8 nF

0603

X7R/50 V

C10

33 nF

0603

X7R/16 V

C11

68 pF

0603

C0G/50 V

R1, R10

N. M.

100 k



0603



0603

910



0603

1% tolerance

10 k



0603

1% tolerance

68 k



0603

1% tolerance

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