L4979MD Datasheet L4979DTR-E, L4979MD, L4979D013TR | P16-P18

Package and PCB thermal data L4979D, L4979MD

16/22 Doc ID 10262 Rev 9

Equation 2: pulse calculation formula

where  = t

Figure 12. Thermal fitting model of V

reg

in SO-20

Table 12. SO-20 thermal parameter

Area (cm

)Footprint2

R1 (°C/W) 4

R2 (°C/W) 2

R3 (°C/W) 2.2

R4 (°C/W) 10

R5 (°C/W) 15

R6 (°C/W) 35 18

C1 (W.s/°C) 0.0003

C2 (W.s/°C) 0.0025

C3 (W.s/°C) 0.015

C4 (W.s/°C) 0.15

C5 (W.s/°C) 1.5

C6 (W.s/°C) 4 7

TH

 Z

THtp

1 –+=

*$3*&)7

L4979D, L4979MD Package information

Doc ID 10262 Rev 9 17/22

5 Package information

5.1 ECOPACK

In order to meet environmental requirements, ST offers these devices in different grades of

ECOPACK

packages, depending on their level of environmental compliance. ECOPACK

specifications, grade definitions and product status are available at: www.st.com.

ECOPACK

is an ST trademark.

5.2 SO-8 package information

Figure 13. SO-8 package dimensions

'!0'#&4

Package information L4979D, L4979MD

18/22 Doc ID 10262 Rev 9

Table 13. SO-8 mechanical data

Symbol

mm inch

Min. Typ. Max. Min. Typ. Max.

A 1.35 1.75 0.053 0.069

A1 0.10 0.25 0.004 0.010

A2 1.10 1.65 0.043 0.065

B 0.33 0.51 0.013 0.020

C 0.19 0.25 0.007 0.010

(1)

4.80 5.00 0.189 0.197

E 3.80 4.00 0.15 0.157

e 1.27 0.050

H 5.80 6.20 0.228 0.244

h 0.25 0.50 0.010 0.020

L 0.40 1.27 0.016 0.050

k0° 8°0° 8°

ddd 0.10 0.004

1. Dimensions D does not include mold flash, protrusions or gate burrs. Mold flash, protrusions or gate burrs

shall not exceed 0.15 mm (0.006 inch) in total (both side).

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P22

L4979MD

Mfr. #:

Buy L4979MD

Manufacturer:

STMicroelectronics

Description:

LDO Voltage Regulators 5.0 Volt 0.5 Amp

Lifecycle:

New from this manufacturer.

Delivery:

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L4979MD

L4979MD

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