Global Mixed-mode Technology Inc.
G952
Typical Performance Characteristics (continued)
Ground Current vs. Load Current
Safe Operating Area of SOT-223
2.00
1.80
1.60
1.40
1.20
1.00
0.80
0.60
0.40
0.20
0.00
1100
1000
°
Mounted on 1 square inch, 1oz copper pcb area (Rθ JA=70 C/W)
900 TA=25°C,Still Air
Mounted on 0.53
square inch, 1oz
copper pcb area
800
700
600
500
400
300
(R
=85 C/W)
°
θJA
Mounted on recommend minimum
footprint, 1oz copper pcb area
(See Recommend minimum footprint)
200
100
0
(Rθ =156 C/W)
°
JA
0
0.2 0.4 0.6 0.8
1
1.2 1.4 1.6 1.8
2
2.2 2.4 2.6 2.8
3
3.2 3.4 3.6 3.8
4
4.2 4.4 4.6
0
100
200
300
400
500
600
700
800
900 1000
Input-Output Voltage Dif f erential (V)
Load Current (mA)
SOT-223 Max. Power Dissipation
vs. PCB Top Copper Area
SOT-223 Max. Power Dissipation
vs. TAMB (still air)
TAMB = 25 C ; Still Air
°
( Different PCB Top Copper Area )
3
Unit:in2
A=0.5
3
2.5
2
2.5
A=1.0
A=1.5
A=2.0
A=2.5
A=3.0
A=3.5
A=4.0
A=4.5
A=5.0
2
1.5
1
1.5
1
0.5
0
0.5
0
0.5
1.5
2.5
3.5
4.5
25
45
65
85
TAMB ( C)
°
PCB Top Copper Area (in2)
SOT-89 Max. Power Dissipation
vs. PCB Top Copper Area
SOT-89 Max. Power Dissipation
vs. TAMB (still air)
TAMB = 25 C ; Still Air
°
( Different PCB Top Copper Area )
Unit:in2
A=0.5
3
2.5
2
3
2.5
2
A=1.0
A=1.5
A=2.0
A=2.5
A=3.0
A=3.5
A=4.0
A=4.5
A=5.0
1.5
1
1.5
1
0.5
0
0.5
0
25
45
65
85
0.5
1.5
2.5
3.5
4.5
TAMB ( C)
PCB Top Copper Area (in2)
°
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 2.6
Mar 19, 2007
7
GMT [ GLOBAL MIXED-MODE TECHNOLOGY INC ]
