Preliminary

TS4268

180mA Ultra Low Dropout Voltage Regulator

with Reset & Watchdog Function

4/7

Version: Preliminary

Electrical Characteristics

Parameter

Test Conditions

Min

Typ

Max

Unit

Output Voltage

4.90

5.00

5.10

V

Current Limit

Vout= 0

180

250

--

mA

Quiescent Current

Iq= 0mA

Iq= 100mA

--

--

300

13

400

20

uA

mA

Dropout Voltage (note 1)

--

250

500

mV

Line Regulation

--

10

30

mV

Load Regulation

--

10

30

mV

Reset Function

Reset threshold

4.20

4.50

4.80

V

Reset adjust threshold

1.28

1.35

1.45

V

Reset low voltage

1mA external

--

0.20

0.50

V

Saturation voltage

--

0.03

0.10

V

Charging current

5

12

18

uA

Upper reset timing threshold

1.4

1.8

2.2

V

Reset delay time

10

15

25

mS

Reset reaction time

--

2

--

uS

Pull-up

With resp. to Vout

18

30

46

KΩ

Lower reset timing threshold

0.20

0.40

0.55

V

Watchdog Input

Discharge current

1.5

3.5

5.2

uA

Charging current

5

12

18

uA

Upper timing threshold

1.4

1.8

2.2

V

Lower timing threshold

0.20

0.40

0.55

V

Watchdog periode

30

55

75

mS

Watchdog trigger time

25

40

60

mS

Activating current

Activates watchdog

2

8

15

mA

Slew rate

from 20% up to 80% Vout

5

--

--

V/us

Note 1: Drop voltage = Vin - Vout (measured when the output voltage has dropped 100 mV from the nominal value

obtained at 13.5 V input)

Note 2: The reset output is low in range from Vout = 1V to Vout,rt.