Datasheet
LM3224
SNVS277C –DECEMBER 2004–REVISED MARCH 2013
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Absolute Maximum Ratings
(1) (2)(2)
V
IN
7.5V
SW Voltage 21V
FB Voltage
(3)
7V
V
C
Voltage
(4)
1.26V ± 0.3V
SHDN Voltage 7.5V
FSLCT 7.5V
Maximum Junction Temperature 150°C
Power Dissipation
(5)
Internally Limited
Lead Temperature 300°C
Vapor Phase (60 sec.) 215°C
Infrared (15 sec.) 220°C
ESD Susceptibility
(6)
Human Body Model 2kV
Machine Model 200V
(1) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications
(2) Absolute maximum ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions for which the
device is intended to be functional, but device parameter specifications may not be ensured. For ensured specifications and test
conditions, see the Electrical Characteristics
()
.
(3) The FB pin should never exceed V
IN
.
(4) Under normal operation the V
C
pin may go to voltages above this value. This maximum rating is for the possibility of a voltage being
applied to the pin, however the V
C
pin should never have a voltage directly applied to it.
(5) The maximum allowable power dissipation is a function of the maximum junction temperature, T
J
(MAX), the junction-to-ambient thermal
resistance, θ
JA
, and the ambient temperature, T
A
. The maximum allowable power dissipation at any ambient temperature is calculated
using: P
D
(MAX) = (T
J(MAX)
− T
A
)/θ
JA
. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and
the regulator will go into thermal shutdown.
(6) The human body model is a 100 pF capacitor discharged through a 1.5kΩ resistor into each pin. The machine model is a 200pF
capacitor discharged directly into each pin.
Operating Conditions
Operating Junction Temperature Range −40°C to +125°C
Storage Temperature −65°C to +150°C
Supply Voltage 2.7V to 7V
Maximum Output Voltage 20V
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