TPS71H01Q1, TPS71H33Q1, TPS71H48Q1, TPS71H50Q1

LOW DROPOUT VOLTAGE REGULATORS

SGLS220A − DECEMBER 2003 − REVISED MAY 2008

6

POST OFFICE BOX 655303

recommended operating conditions

MIN

MAX

UNIT

TPS71H01-Q1

2.5

10

Input voltage, VI†

TPS71H33-Q1

3.77

10

V

Input voltage, VI†

TPS71H48-Q1

5.2

10

V

TPS71H50-Q1

5.33

10

High-level input voltage at EN, VIH

2

V

Low-level input voltage at EN, VIL

0.5

V

Output current range, IO

0

500

mA

Operating virtual junction temperature range, TJ

−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: VI(min) = VO(max) + VDO(max load)

Because the TPS71H01 is programmable, rDS(on) should be used to calculate VDO before applying the above equation. The equation for

calculating VDO from rDS(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 TPS71H01.