LP3852, LP3855

SNVS174I – FEBRUARY 2003 – REVISED FEBRUARY 2015

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8.5 Electrical Characteristics

PARAMETER

TEST CONDITIONS

UNIT

–1.5%

0

1.5%

10 mA

For –40°C

–3%

3%

0.02%

For –40°C

0.06%

10 mA

0.06%

For –40°C

0.12%

24

35

For –40°C

45

Dropout voltage

240

280

For –40°C

380

mV

26

35

For –40°C

45

Dropout voltage

260

320

For –40°C

435

3

9

For –40°C

10

Ground pin current in normal

mA

operation mode

3

9

For –40°C

10

0.01

10

Ground pin current in shutdown

µA

mode

-40°C

50

Peak output current

1.8

A

SHORT CIRCUIT PROTECTION

Short circuit current

3.2

A

SHUTDOWN INPUT

1.3

Output = ON

For –40°C

2

Shutdown threshold

V

1.3

Output = OFF

For –40°C

0.3

Turnoff delay

20

µs

Turnon delay

25

µs

SD input current

1

nA

ERROR PIN

10%

Threshold

For –40°C

5%

16%

5%

Threshold hysteresis

For –40°C

2%

8%

(1)

Limits are specified by testing, design, or statistical correlation.

(2)

Typical numbers are at 25°C and represent the most likely parametric norm.

(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. The line

and load regulation specification contains only the typical number. However, the limits for line and load regulation are included in the

output voltage tolerance specification.

(4)

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 2.5 V, the drop-out voltage is

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

(5)

The SOT-223 package devices have slightly higher dropout due to increased bond wire resistance.

(6)

ERROR threshold and hysteresis are specified as percentage of regulated output voltage. See ERROR Flag Operation.

6

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