Datasheet

TPS7301Q, TPS7325Q, TPS7330Q, TPS7333Q, TPS7348Q, TPS7350Q
LOW-DROPOUT VOLTAGE REGULATORS
WITH INTEGRATED DELAYED RESET FUNCTION
SLVS124F – JUNE 1995 – REVISED JANUARY 1999
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
DISSIPATION RATING TABLE 1 – FREE-AIR TEMPERATURE (SEE FIGURE 3)
PACKAGE
T
A
≤ 25°C DERATING FACTOR T
A
= 70°C T
A
= 125°C
PACKAGE
A
POWER RATING ABOVE T
A
= 25°C
A
POWER RATING
A
POWER RATING
D 725 mW 5.8 mW/°C 464 mW 145 mW
P 1175 mW 9.4 mW/°C 752 mW 235 mW
PW
†
700 mW 5.6 mW/°C 448 mW 140 mW
DISSIPATION RATING TABLE 2 – CASE TEMPERATURE (SEE FIGURE 4)
PACKAGE
T
C
≤ 25°C DERATING FACTOR T
C
= 70°C T
C
= 125°C
PACKAGE
C
POWER RATING ABOVE T
C
= 25°C
C
POWER RATING
C
POWER RATING
D 2188 mW 9.4 mW/°C 1765 mW 1248 mW
P 2738 mW 21.9 mW/°C 1752 mW 548 mW
PW
†
4025 mW 32.2 mW/°C 2576 mW 805 mW
†
Refer to Thermal Information section for detailed power dissipation considerations when using the
TSSOP package.
Figure 3
PW Package
R
θJA
= 178°C/W
1200
800
400
0
25 50 75 100
– Maximum Continuous Dissipation – mW
MAXIMUM CONTINUOUS DISSIPATION
vs
FREE-AIR TEMPERATURE
125 150
1400
1000
600
200
P
D
T
A
– Free-Air Temperature – °C
D Package
R
θJA
= 172°C/W
P Package
R
θJA
= 106°C/W
Figure 4
2400
1600
800
0
25 50 75 100
– Maximum Continuous Dissipation – mW
3200
4000
MAXIMUM CONTINUOUS DISSIPATION
vs
CASE TEMPERATURE
4800
125 150
4400
3600
2800
2000
1200
400
P
D
T
C
– Case Temperature – °C
D Package
R
θJC
= 57°C/W
P Package
R
θJC
= 46°C/W
PW Package
R
θJC
= 37°C/W