LP3958TL datasheet(4/28 Pages) NSC

4 / 28 page

Absolute Maximum Ratings (Notes 1,

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

V (SW, FB, MAIN, SUB, KEY1,

KEY2, KEY3)

-0.3V to +20V

DD1,VDD2,VDDIO,VDDA

-0.3V to +6.0V

Voltage on I

KEY,IRT,VREF

-0.3V to V

DD1+0.3V

with 6.0V max

Voltage on Logic Pins

-0.3V to V

DDIO +0.3V

with 6.0V max

I(V

REF)

10µA

I(KEY1, KEY2, KEY3)

100mA

Continuous Power Dissipation

(Note 3)

Internally Limited

Junction Temperature (T

J-MAX)

125oC

Storage Temperature Range

-65oC to +150oC

Maximum Lead Temperature

(Soldering) (Note 4)

260oC

ESD Rating (Note 5)

Human Body Model:

2kV

Machine Model:

200V

Operating Ratings (Notes 1, 2)

V (SW, FB, MAIN, SUB)

0 to +19V

DD1,2

3.0 to 5.5V

DDIO

1.65V to V

DD1

Recommended Load Current

(KEY1, KEY2, KEY3) CC Mode

0mA to 15mA/driver

Recommended Total Boost

Converter Load Current

0mA to 70mA

Junction Temperature (T

J) Range

-30oC to +125oC

Ambient Temperature (T

A) Range

(Note 6)

-30oCto+85oC

Thermal Properties

Junction-to-Ambient Thermal

Resistance(

JA), TLA25 Package

(Note 7)

60 - 100oC/W

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