LM2930 datasheet(3/8 Pages) NSC

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Electrical Characteristics (Note 3) (Continued)

LM2930-8.0 (V

IN=14V, IO=150 mA, Tj=25˚C (Note 6), C2=10 µF, unless otherwise specified)

Tested

Design

Parameter

Conditions

Typ

Limit

Unit

(Note 4)

(Note 5)

Current Limit

400

700

MAX

150

MIN

Dropout Voltage

O=150 mA

0.32

0.6

MAX

Output Voltage Under

−12V

≤V

IN≤40V, RL=100Ω

8.8

MAX

Transient Conditions

−0.3

MIN

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions for which the device is func-

tional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guar-

antee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is

given, however, the typical value is a good indication of device performance.

Note 2: Thermal resistance without a heat sink for junction to case temperature is 3˚C/W and for case to ambient temperature is 50˚C/W for the TO-220, 73˚C/W

for the TO-263. If the TO-263 package is used, the thermal resistance can be reduced by increasing the P.C. board copper area thermally connected to the package.

Using 0.5 square inches of copper area,

θJA is 50˚C/W; with 1 square inch of copper area, θJA is 37˚C/W; and with 1.6 or more square inches of copper area, θJA

is 32˚C/W.

Note 3: All characteristics are measured with a capacitor across the input of 0.1 µF and a capacitor across the output of 10 µF. All characteristics except noise voltage

and ripple rejection ratio are measured using pulse techniques (tW≤10 ms, duty cycle≤5%). Output voltage changes due to changes in internal temperature must be

taken into account separately.

Note 4: Guaranteed and 100% production tested.

Note 5: Guaranteed (but not 100% production tested) over the operating temperature and input current ranges. These limits are not used to calculate outgoing qual-

ity levels.

Note 6: To ensure constant junction temperature, low duty cycle pulse testing is used.

Typical Application

Typical Performance Characteristics

DS005539-5

*Required if regulator is located far from power supply filter.

**COUT must be at least 10 µF to maintain stability. May be increased without bound to maintain regulation during transients. Locate as close as possible to the

regulator. This capacitor must be rated over the same operating temperature range as the regulator. The equivalent series resistance (ESR) of this capacitor

should be less than 1

Ω over the expected operating temperature range.

Output Impedance

DS005539-11

Overvoltage Supply Current

DS005539-12

Reverse Supply Current

DS005539-13

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