LM3224 datasheet(4/27 Pages) TI

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LM3224

SNVS277C – DECEMBER 2004 – REVISED MARCH 2013

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Absolute Maximum Ratings

(1) (2) (2)

VIN

7.5V

SW Voltage

21V

FB Voltage (3)

VC 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 VIN.

(4)

Under normal operation the VC 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 VC pin should never have a voltage directly applied to it.

(5)

The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(MAX), the junction-to-ambient thermal

resistance,

θJA, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is calculated

using: PD (MAX) = (TJ(MAX) − TA)/θJA. 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 1.5k

Ω 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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