LM2941, LM2941C

SNVS770G – JUNE 1999 – REVISED APRIL 2013

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Electrical Characteristics—LM2941CT, LM2941CS (continued)

5V

while those in boldface type apply over the full Operating Temperature Range.

Limit

Units

Parameter

Conditions

Typ

(1)

(Limits)

Maximum Line

55

45

V(min)

Transient

Maximum Operational

31

26

Input Voltage

Reverse Polarity

−30

−15

V(min)

DC Input Voltage

Reverse Polarity

T

−55

−45

V(min)

Transient Input Voltage

ON/OFF Threshold

1.30

0.80

V(max)

Voltage ON

ON/OFF Threshold

1.30

2.00

V(min)

Voltage OFF

ON/OFF Threshold

50

100

μA(max)

Current

Thermal Performance

Thermal Resistance

5-Lead TO-220

1

°C/W

Junction-to-Case,

5-Lead TO-263

1

°C/W

8-Lead WSON

5.3

°C/W

Thermal Resistance

5-Lead TO-220

53

°C/W

Junction-to-Ambient,

(1)

5-Lead TO-263 (See TO-263 Mounting)

73

°C/W

8-Lead WSON (See WSON Mounting)

35

°C/W

(1)

into thermal shutdown. If the TO-263 package is used, the thermal resistance can be reduced by increasing the P.C. board copper area

thermally connected to the package: Using 0.5 square inches of copper area,

37°C/W; and with 1.6 or more square inches of copper area,

using a JESD51-7 board with six vias, using no airflow and an ambient temperature of 22°C. The value

specifically dependent on PCB trace area, trace material, and the number of layers and thermal vias. For improved thermal resistance

and power dissipation for the WSON package, refer to Application Note AN-1187 (literature number SNOA401). It is recommended that

6 vias be placed under the center pad to improve thermal performance.

4

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