L7983 datasheet(32/43 Pages) STMICROELECTRONICS

部件名	L7983

功能描述	60 V, 300 mA synchronous step-down switching regulator with 10 μA quiescent current

PDF	43 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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32 / 43 page

6.4

L7983PU50R - Evaluation board

In this section the L7983PU50R (VOUT = 5 V fixed) 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 = 5 V (fixed)

•

Max. IOUT = 300 mA

•

Selected FSW = 1 MHz

•

VBIAS = VOUT (switch-over enabled)

Table 11. L7983PU50R evaluation board component list (BOM)

Reference

Part

Package

Details

Manufacturer P/N

1 μF

1206

X7R/100V/10%

TDK C3216X7R2A105K

2.2 μF

0805

X7R/16V/10%

TDK C2012X7R1C225K

470 nF

0603

X7R/16V/10%

C4, C5, C10

N.M.

100 nF

0603

X7R/16V/10%

47 μH

4x4 mm

0.56 A sat/ 650 mΩ

COILCRAFT LPS4018-473M

R1, R4, R9

0 Ω

0603

R2, R3, R7, R10

N.M.

R5, R6, R8

100 kΩ

0603

1% tolerance

L7983

DFN10_3x3

STM L7983PU50R

Figure 37. 5 V fix efficiency (LCM)

100

0.0001

0.001

0.01

0.1

Output current [A]

12 V

24 V

36 V

48 V

60 V

Figure 38. 5 V fix load regulation (LCM)

4.98

5.02

5.04

5.06

5.08

5.1

0.05

0.1

0.15

0.2

0.25

0.3

Output current [A]

12V

24V

36V

48V

60V

L7983

L7983PU50R - Evaluation board

DS13354 - Rev 1

page 32/43

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