TS2938

500mA Ultra Low Dropout Voltage Regulator

with Inhibit Function

2/6

Version: E11

Parameter

Conditions

Min

Typ

Max

Unit

Output Voltage

0.980|V

o|

1.020|V

o|

V

0.960|V

o|

1.040|V

o|

V

Output Voltage Temperature Coefficient

--

50

150

ppm/

Line Regulation

Vo+1V

≤ V

IN

≤ 26V

--

0.05

0.5

%

Load Regulation

5mA

≤ I

L

≤ 500mA

--

0.2

1.0

%

Dropout Voltage (Note 4)

--

--

--

100

300

500

200

400

600

mV

Quiescent Current (Note 5)

--

--

--

200

12

25

300

20

50

uA

mA

mA

Short Circuit Current (Note 6)

--

0.9

1.3

A

Output Noise,

--

--

--

500

350

120

--

--

--

uVrms

Ripple Rejection

Ratio

60

--

--

dB

Shutdown Input

Input Logic Voltage

Low (Regulator ON)

--

1.3

0.7

V

High (Regulator OFF)

2.0

--

--

Shutdown Pin Input Current

Vinhibit = 2.4V

--

30

50

uA

Vinhibit = 26V

--

450

600

Regulator Output Current in Shutdown

Vinhibit≤2V, Vin≤26V

Vout=0V

--

--

200

Note 1: Absolute Maximum Rating is limits beyond which damage to the device may occur. For guaranteed

Specifications and test conditions see the Electrical Characteristics.

Note 2: Maximum positive supply voltage of 60V must be limited duration (<100mS) and duty cycle (<1%).

Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, Tj, the

junction

to ambient thermal resistance, θja, and the ambient temperature, Ta. Exceeding the maximum allowable

power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown.

The

effective value of θja can be reduced by using a heatsink.

Note 4: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its

nominal value measured at 1V differential.

Note 5: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of

the

ground pin current and output load current.

Note 6: Output current will decrease with increasing temperature, but it will be not dropped below 500mA at the

maximum specified temperature.