Datasheet

TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Figure 3
1200
800
400
0
25 50 75 100
– Maximum Continuous Dissipation – mW
DISSIPATION DERATING CURVE
†
vs
FREE-AIR TEMPERATURE
125 150
1400
1000
600
200
PW and PWP
Package
R
θJA
= 178°C/W
P
D
T
A
– Free-Air Temperature – °C
P Package
R
θJA
= 106°C/W
D Package
R
θJA
= 172°C/W
Figure 4
2400
1600
800
0
25 50 75 100
– Maximum Continuous Dissipation – mW
3200
4000
DISSIPATION DERATING CURVE
†
vs
CASE TEMPERATURE
4800
125 150
4400
3600
2800
2000
1200
400
PW Package
R
θJC
= 31°C/W
P
D
T
C
– Case Temperature – °C
D Package
R
θJC
= 57°C/W
P Package
R
θJC
= 46°C/W
†
Dissipation rating tables and figures are provided for maintenance of junction temperature at or below absolute maximum temperature of 150°C.
For guidelines on maintaining junction temperature within recommended operating range, see the Thermal Information section.
recommended operating conditions
MIN MAX UNIT
‡
TPS7101Q 2.5 10
In
p
ut voltage V
I
‡
TPS7133Q 3.77 10
V
Input
voltage
,
V
I
‡
TPS7148Q 5.2 10
V
TPS7150Q 5.33 10
High-level input voltage at EN, V
IH
2 V
Low-level input voltage at EN, V
IL
0.5 V
Output current range, I
O
0 500 mA
Operating virtual junction temperature range, T
J
–40 125 °C
‡
Minimum input voltage defined in the recommended operating conditions is the maximum specified output voltage plus dropout voltage at the
maximum specified load range. Since dropout voltage is a function of output current, the usable range can be extended for lighter loads. To
calculate the minimum input voltage for your maximum output current, use the following equation: V
I(min)
= V
O(max)
+ V
DO(max load)
Because the TPS7101 is programmable, r
DS(on)
should be used to calculate V
DO
before applying the above equation. The equation for calculating
V
DO
from r
DS(on)
is given in Note 2 in the electrical characteristics table. The minimum value of 2.5 V is the absolute lower limit for the
recommended input voltage range for the TPS7101.