3A Ultra Low Dropout Linear Regulator

TJ4230

Apr. 2011 – Rev. 1. 0

5/9

HTC

ELECTRICAL CHARACTERISTICS

(Note 1)

Limits in standard typeface are for TJ=25ºC, and limits in boldface type apply over the full operating temperature range.

(Note 2)

PARAMETER

SYMBOL

TEST CONDITION

MIN.

TYP.

MAX.

UNIT

Output Voltage Tolerance

-2

-3

0

2

3

%

Adjustable Pin Voltage

(ADJ version)

0.784

0.776

0.8

0.816

0.824

V

Line Regulation

(Note 3)

-

0.15

-

0.40

%/V

Load Regulation

(Note 3, 4)

-

0.20

0.50

0.60

%

-

45

55

65

Dropout Voltage

(Note 5)

-

400

500

600

mV

-

0.40

0.6

1.0

Ground Pin Current

(Note 6)

-

0.40

0.6

1.0

mA

Ground Pin Current

(Note 7)

-

0.5

1

2

uA

f = 1kHz

-

55

-

Power Supply Rejection Ratio

PSRR

-

65

-

dB

Thermal Shutdown Temperature

-

-

165

-

ºC

Logic Low

Output = Low

-

-

0.4

V

Enable threshold

Logic High

Output = High

2.0

-

-

V

Enable Input Current

-

0.1

-

1

uA

Note 1. Stresses listed as the absolute maximum ratings may cause permanent damage to the device. These are for stress ratings. Functional

operating of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not

implied. Exposure to absolute maximum rating conditions for extended periods may remain possibly to affect device reliability.

Note 3. Output voltage line regulation is defined as the change in output voltage from the nominal value due to change in the input line voltage.

Output voltage load regulation is defined as the change in output voltage from the nominal value due to change in load current.

Note 4. Regulation is measured at constant junction temperature by using a 10ms current pulse. Devices are tested for load regulation in the

load range from 10mA to 3A.

Note 5. Dropout voltage is defined as the minimum input to output differential voltage at which the output drops 2% below the nominal value.

Dropout voltage specification applies only to output voltages of 2.5V and above. For output voltages below 2.5V, the dropout voltage is

nothing but the input to output differential, since the minimum input voltage is 2.5V

given loading condition. The total current drawn from the supply is the sum of the load current plus the ground pin current.

Note 7. Ground current, or standby current, is the input current drawn by a regulator when the output voltage is disabled by an enable signal.