L4979D datasheet(14/22 Pages) STMICROELECTRONICS

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L4979D 데이터시트(PDF) 14 Page - STMicroelectronics

부품명	L4979D

상세설명	Low drop voltage regulator

PDF	22 Pages

Scroll/Zoom	100%

제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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14 / 22 page

Package and PCB thermal data

L4979D, L4979MD

14/22

Doc ID 10262 Rev 9

4.2

SO-20 thermal data

Figure 9.

SO-20 PC board

Layout condition of Rth and Zth measurements (PCB: FR4 area = 58 mm x 58 mm, PCB thickness = 2 mm,

Cu thickness = 35 mm, Copper areas: from minimum pad lay-out to 6cm2).

Table 11.

SO-8 thermal parameter

Area (cm2)Footprint

R1 (°C/W)

R2 (°C/W)

R3 (°C/W)

R4 (°C/W)

R5 (°C/W)

R6 (°C/W)

C1 (W.s/°C)

0.0003

C2 (W.s/°C)

0.0025

C3 (W.s/°C)

0.03

C4 (W.s/°C)

0.04

C5 (W.s/°C)

0.1

C6 (W.s/°C)

1.05

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