Datasheet

TPS7301Q, TPS7325Q, TPS7330Q, TPS7333Q, TPS7348Q, TPS7350Q
LOW-DROPOUT VOLTAGE REGULATORS
WITH INTEGRATED DELAYED RESET FUNCTION
SLVS124F – JUNE 1995 – REVISED JANUARY 1999
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions
MIN MAX UNIT
†
TPS7301Q 2.47 10
V
†
TPS7325Q 3.1 10
V
In
p
ut voltage V
I
†
TPS7330Q 3.5 10 V
Inp
u
t
v
oltage
,
V
I
†
TPS7333Q 3.77 10
TPS7348Q 5.2 10
V
TPS7350Q 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, V
DO
,
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 TPS7301 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 TPS7301 electrical characteristics table. The minimum value of 2.97 V is the absolute lower limit for
the recommended input voltage range for the TPS7301.