LM2940QML, LM2940QML-SP

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SNVS389B – MAY 2010 – REVISED MAY 2013

Absolute Maximum Ratings

(1)

Input Voltage (Survival Voltage

≤ 100mS)

60V

(2)

1W

Maximum Junction Temperature

150°C

Storage Temperature Range

Lead Temperature (Soldering 10 seconds)

300°C

16LD CFP "WG" (device 01, 02) (Still Air)

122°C/W

16LD CFP "GW" (device 03, 04) (Still Air)

136°C/W

16LD CFP "WG" (device 01, 02) (500LF/Min Air flow)

77°C/W

Thermal Resistance

16LD CFP "GW" (device 03, 04) (500LF/Min Air flow)

87°C/W

5°C/W

16LD CFP "GW" (device 03, 04)

13°C/W

Package Weight CFP "WG" (device 01, 02)

360 mg

Package Weight CFP "GW" (device 03, 04)

410 mg

4KV

(1)

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for

which the device is functional, but do not ensure specific performance limits. For specified specifications and test conditions, see the

Electrical Characteristics. The ensured specifications apply only for the test conditions listed. Some performance characteristics may

degrade when the device is not operated under the listed test conditions.

(2)

the maximum power is 5 Watts, but then this will depend upon the temperature of the heat sink, the efficiency of the heat sink, and the

efficiency of the heat flow between the package body and the heat sink. We can not predict these values.

(3)

The package material for these devices allows much improved heat transfer over our standard ceramic packages. In order to take full

advantage of this improved heat transfer, heat sinking must be provided between the package base (directly beneath the die), and either

metal traces on, or thermal vias through, the printed circuit board. Without this additional heat sinking, device power dissipation must be

calculated using

transfer out of the package, since the thermal resistance of the lead frame material is very poor, relative to the material of the package

base. The stated

between the package base and the printed circuit board. The user must determine the value of the additional thermal resistance and

must combine this with the stated value for the package, to calculate the total allowed power dissipation for the device.

(4)

Human body model, 1.5 k

Ω in series with 100 pF.

Recommended Operating Conditions

(1)

Input Voltage

26V

Temperature Range

(1)

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for

which the device is functional, but do not ensure specific performance limits. For specified specifications and test conditions, see the

Electrical Characteristics. The ensured specifications apply only for the test conditions listed. Some performance characteristics may

degrade when the device is not operated under the listed test conditions.

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