LP2960 Datasheet, PDF(4/17 Page) National Semiconductor (TI) – Adjustable Micropower 0.5A Low-Dropout Regulators

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LP2960 Datasheet, PDF (4/17 Pages) National Semiconductor (TI) – Adjustable Micropower 0.5A Low-Dropout Regulators

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Electrical Characteristics Limits in standard typeface are for TJ = 25ËC, and limits in boldface type apply

over the full operating temperature range. Unless otherwise specified: CIN = 4.7 ÂµF, VIN = VO(NOM) + 1V, IL = 1 mA,

COUT =

VS/D =

10 ÂµF for 5V parts

2V. (Continued)

COUT

ÂµF

for

3.3V

parts,

Feedback

tied

VTAP

pin,

Output

tied

Sense

pin,

Note 4: May exceed the input supply voltage.

Note 5: Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.

Note 6: Output voltage load regulation is measured at constant junction temperature using low duty cycle pulse testing. Two separate tests are performed, one for

the load current range of 100 ÂµA to 1 mA and one for the 1 mA to 500 mA range. Changes in output voltage due to heating effects are covered by the thermal regu-

lation specification.

Note 7: Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below the value measured with a 1V differential. At

very low values of programmed output voltage, the input voltage minimum of 2V (2.3V over temperature) must be observed.

Note 8: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the ground pin current, output load current, and

current through the external resistive divider (if used).

Note 9: Dropout detection comparator threshold voltages are expressed in terms of a voltage differential measured at the Feedback terminal below the nominal ref-

erence voltage, which is the reference voltage measured with VIN = VO(NOM) + 1V. To express these thresholds in terms of output voltage change, multiply by the

error amplifier gain which is VO/VREF = (R1 + R2)/R2 (see Basic Application Circuit).

Note 10: Thermal regulation is the change in output voltage at a time T after a change in power dissipation, excluding load or line regulation effects. Specifications

are for a 400 mA load pulse at VIN = VO(NOM) + 15V (6W pulse) for T = 10 ms.

Note 11: Connect a 0.1 ÂµF capacitor from the output to the feedback pin.

Note 12: Vshutdown â¤ 1.1V, VIN < 30V, VOUT = 0V.

Note 13: Two separate tests are performed for referenc e voltage line regulation, one covering 2.5V â¤ VIN â¤ VO(NOM) + 1V and the other test for VO(NOM) + 1V

â¤ VIN â¤ 30V.

Note 14: All room temperature limits are 100% production tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality

Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level.

Note 15: Human Body Model, 200 pF discharged through 1.5 kâ¦.

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