L7983 datasheet(28/43 Pages) STMICROELECTRONICS

部品番号	L7983

部品情報	60 V, 300 mA synchronous step-down switching regulator with 10 μA quiescent current

PDF	43 Pages

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メーカー	STMICROELECTRONICS [STMicroelectronics]

ホームページ	http://www.st.com

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28 / 43 page

6.2

L7983PUR - Evaluation board

In this section the L7983PUR (adjustable VOUT) evaluation board is described.

The board schematic is shown in Figure 22 and the PCB layout is depicted in Figure 23 and Figure 24.

The main features are:

•

Programmed VOUT = 12 V

•

Max. IOUT = 300 mA

•

Selected FSW = 1 MHz

•

VBIAS = VOUT (switch-over enabled)

Table 9. L7983PUR evaluation board component list (BOM)

Reference

Part

Package

Details

Manufacturer P/N

1 μF

1206

X7R/100V/10%

TDK C3216X7R2A105K

1 μF

1206

X7R/100V/10%

TDK C3216X7R2A105K

470 nF

0603

X7R/16V/10%

C4, C5, C10

N.M.

100 nF

0603

X7R/16V/10%

68 μH

4x4 mm

0.46 A sat/ 950 mΩ

COILCRAFT LPS4018-683M

510 kΩ

0603

1% tolerance

39 kΩ

0603

1% tolerance

R3, R7

N.M.

R4, R9, R10

0603

R5, R6, R8

100 kΩ

0603

1% tolerance

L7983

DFN10_3x3

STM L7983PUR

Figure 25. 12 V efficiency (LCM)

100

0.0001

0.01

0.1

Output current [A]

18V

24V

36V

48V

60V

0.001

Figure 26. 12 V load regulation (LCM)

11.85

11.9

11.95

12.05

12.1

0.05

0.1

0.15

0.2

0.25

0.3

Output current [A]

18V

24V

36V

48V

60V

L7983

L7983PUR - Evaluation board

DS13354 - Rev 1

page 28/43

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