CAT6220 Datasheet, PDF (9/12 Pages) ON Semiconductor – 300 mA Adjustable Voltage LDO Regulator

CAT6220
Table 5. THERMAL PERFORMANCE
Package
Symbol
Test Conditions
PACKAGE THERMAL CONDUCTIVITY COMPARISON
TSOT−23−5
q_JA
q_JC
TDFN−6
q_JA
q_JC
1 oz Copper Thickness, 100 mm²
1 oz Copper Thickness, 100 mm²
Min
Typ
Max
Unit
280
_C/W
68
160
_C/W
35
450
400
350
300
250
200
150
100
50
0
0
380
330
280
TSOT−5 (1 oz)
230
180
130
80
0
TSOT−5 (2 oz)
TDFN6 2x2.2 (1 oz)
TDFN6 2x2.2 (2 oz)
100 200 300 400 500 600 700
PCB COPPER AREA (mm²)
Figure 26. R_qJA vs. PCB Copper Area
TDFN 2x2 mm
Single Heated Output PCB Traces 1 oz
Single Heated Output PCB Traces 2 oz
Equally Heated Outputs PCB Traces 1 oz
Equally Heated Outputs PCB Traces 2 oz
100
200
300
400
500
600
700
COPPER AREA (mm²)
Figure 27. Thermal Characteristic as a Function of Copper Area on the PCB
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