Datasheet

TPS7201Q, TPS7225Q, TPS7230Q
TPS7233Q, TPS7248Q, TPS7250Q, TPS72xxY
MICROPOWER LOW-DROPOUT (LDO) VOLTAGE REGULATORS
SLVS102G – MARCH 1995 – REVISED JUNE 2000
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions
MIN MAX UNIT
†
TPS7201Q 3 10
†
TPS7225Q 3.65 10
In
p
ut voltage V
I
†
TPS7230Q 3.96 10
V
Inp
u
t
v
oltage
,
V
I
†
TPS7233Q 3.98 10
V
TPS7248Q 5.24 10
TPS7250Q 5.41 10
High-level input voltage at EN, V
IH
2 V
Low-level input voltage at EN, V
IL
0.5 V
Output current, I
O
0 250 mA
Operating virtual junction temperature, 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 the maximum load current used in a given application, use the following equation:
V
I(min)
V
O(max)
V
DO(max load)
Because the TPS7201 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 3 under the TPS7201 electrical characteristics table. The minimum value of 3 V is the absolute
lower limit for the recommended input-voltage range for the TPS7201.