Datasheet
LM3420
SNVS116D –MAY 1998–REVISED MAY 2013
www.ti.com
Figure 2. LM3420 Functional Diagram
Connection Diagrams
5-Lead Small Outline Package
Top View Actual Size
*No internal connection, but should be soldered to PC board for best
heat transfer.
Figure 3. SOT-23 Package Figure 4. SOT-23 Package
See Package DBV0005A See Package DBV0005A
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ABSOLUTE MAXIMUM RATINGS
(1)(2)
Input Voltage V(IN) 20V
Output Current 20 mA
Junction Temperature 150°C
Storage Temperature −65°C to +150°C
Vapor Phase (60 seconds) +215°C
Lead Temperature
Infrared (15 seconds) +220°C
Power Dissipation (T
A
= 25°C)
(3)
300 mW
ESD Susceptibility
(4)
Human Body Model 1500V
(1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is intended to be functional, but do not ensure specific performance limits. For ensured specifications and test
conditions, see the Electrical Characteristics. The specified 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) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(3) The maximum power dissipation must be derated at elevated temperatures and is dictated by T
Jmax
(maximum junction temperature),
θ
JA
(junction to ambient thermal resistance), and T
A
(ambient temperature). The maximum allowable power dissipation at any
temperature is P
Dmax
= (T
Jmax
− T
A
)/θ
JA
or the number given in the Absolute Maximum Ratings, whichever is lower. The typical thermal
resistance (θ
JA
) when soldered to a printed circuit board is approximately 306°C/W for the DBV0005A package.
(4) The human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin.
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