LP3963, LP3966

www.ti.com

SNVS067H – APRIL 2000 – REVISED APRIL 2013

Electrical Characteristics

LP3963/LP3966

Symbol

Parameter

Conditions

Units

Min

Max

-1.5

+1.5

0

%

-3.0

+3.0

Adjust Pin Voltage (ADJ version)

10 mA

1.198

1.234

1.216

V

1.180

1.253

Output Voltage Line Regulation

0.02

%

(3)

0.06

Output Voltage Load Regulation

0.06

%

(3)

0.01

80

100

120

mV

800

1000

1200

5

9

10

Ground Pin Current In Normal

mA

Operation Mode

6

14

15

Ground Pin Current In Shutdown

15

25

µA

75

Peak Output Current

4.5

4

A

3.5

SHORT CIRCUIT PROTECTION

Short Circuit Current

5.5

A

OVER TEMPERATURE PROTECTION

Tsh(t)

Shutdown Threshold

165

°C

Tsh(h)

Thermal Shutdown Hysteresis

10

°C

SHUTDOWN INPUT

Output = High

Shutdown Threshold

V

Output = Low

0

0.2

Turn-off delay

20

µs

Turn-on delay

25

µs

SD Input Current

1

nA

ERROR FLAG

Threshold

10

5

16

%

Threshold Hysteresis

5

2

8

%

Error Flag Saturation

0.02

0.1

V

Td

Flag Reset Delay

1

µs

(1)

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

(2)

Limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation using

Statistical Quality Control (SQC) methods. The limits are used to calculate TI's Average Outgoing Quality Level (AOQL).

(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 2.5V, the drop-out voltage is

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

(5)

This specification has been tested for

conditions.

(6)

At elevated temperatures, devices must be derated based on package thermal resistance. The devices in TO-220 package must be

derated at

surface-mount package must be derated at

(7)

Error Flag threshold and hysteresis are specified as percentage of regulated output voltage. See Application Hints.

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