LP2960 datasheet(3/17 Pages) NSC

3 / 17 page

Electrical Characteristics Limits in standard typeface are for T

J = 25˚C, and limits in boldface type apply

over the full operating temperature range. Unless otherwise specified: C

IN = 4.7 µF, VIN = VO(NOM) + 1V, IL = 1 mA,

COUT = 10 µF for 5V parts or COUT = 22 µF for 3.3V parts, Feedback pin is tied to VTAP pin, Output pin is tied to Sense pin,

VS/D = 2V. (Continued)

Symbol

Parameter

Conditions

Typ

LP2960AI

(Note 14)

LP2960I

(Note 14)

Units

Min

Max

Min

Max

REF

Reference Voltage

1.235

1.220

1.210

1.250

1.265

1.210

1.195

1.260

1.275

Reference Voltage

Line Regulation

(Note 13)

0.05

0.1

0.30

0.2

0.4

Reference Voltage

Load Regulation

REF = 0– 200 µA

0.45

0.6

0.9

1.2

1.5

Reference Voltage

Temperature Coefficient

(Note 5)

ppm/˚C

B(FB)

Feedback Pin Bias

Current

−20

−50

−70

−50

−70

DROPOUT DETECTION COMPARATOR

Output HIGH Leakage

OH = 30V

0.01

µA

Output LOW Voltage

IN = VO(NOM) − 1V

O(COMP) = 400 µA

125

250

400

250

400

THR(max) Upper Threshold Voltage

(Note 9)

−60

−80

−100

−35

−25

−80

−100

−35

−25

THR(min)

Lower Threshold Voltage

(Note 9)

−85

−130

−200

−70

−35

−130

−200

−70

−35

HYST

Hysteresis

(Note 9)

SHUTDOWN INPUT

Input Offset Voltage

(Referred to V

REF)

±5

−18

−24

−18

−24

HYST

Hysteresis

(Referred to V

REF)10

Input Bias Current

S/D = 0– 5V

−20

−60

−100

100

−60

−100

100

OUT(S/D)

Regulator Output Current

in Shutdown

(Note 12)

µA

AUXILIARY COMPARATOR

Input Offset Voltage

(Referred to V

REF)

±5

−15

−20

−15

−20

HYST

Hysteresis

(Referred to V

REF)10

Input Bias Current

COMP = 0– 5V

−20

−60

−100

100

−60

−100

100

Output HIGH Leakage

OH = 30V

COMP = 1.3V

0.01

µA

Output LOW Voltage

COMP = 1.1V

O = 400 µA

125

250

400

250

400

Note 1: Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the de-

vice outside of its rated operating conditions.

Note 2: The maximum allowable power dissipation is a function of the maximum junction temperature, TJ (max), the junction-to-ambient thermal resistance, θJ−A,

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

Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. See APPLICATION

HINTS for additional information on heatsinking and thermal resistance.

Note 3: When used in dual-supply systems where the regulator load is returned to a negative supply, the output voltage must be diode-clamped to ground.

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