LP3983 datasheet(4/10 Pages) NSC

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Absolute Maximum Ratings (Notes 1,

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

−0.3 to 6.5V

−0.3 to (V

IN + 0.3V) to

6.5V(max)

OUT

−0.3V to(V

IN + 0.3V) to

6.5V(max)

Junction Temperature

150˚C

Storage Temperature

−65˚C to +150˚C

Pad Temperature

(Soldering, 10 sec.)

265˚C

ESD (Note 4)

Human Body Model

2KV

Machine Model

100V

Operating Ratings (Notes 1, 2)

IN (Note 9)

IN(MIN)to 6V

EN,

0 to 6.0V

Recommended Load Current

0 to 5mA

Junction Temperature

−40˚C to +125˚C

Ambient Temperature

(Note 3)

−40˚C to +119˚C

Thermal Properties (Note 3)

Junction to Ambient Thermal

Resistance (

JA)

255˚C/W

Electrical Characteristics

Unless otherwise specified: V

EN = 1.8V,VIN =VOUT(nom) + 1.0V, CIN = 1.0 µF, IOUT = 1.0mA, COUT = 1.0 µF. Typical values

and limits appearing in standard typeface are for T

J = 25˚C. Limits appearing in boldface type apply over the entire junction

temperature range for operation, −40˚C to +125˚C. (Note 10) (Note 11)

Symbol

Parameter

Conditions

Typ

Limit

Units

Min

Max

∆V

OUT

Output Voltage

Tolerance

OUT = 0mA to 5mA

-55

+55

mV from

OUT(nom)

-96

+96

−6

%of

OUT(nom)

PSRR

Power Supply Rejection

Ratio

IN =VOUT(nom) + 1V,

≤10 kHz, I

OUT = 1mA

Quiescent Current

OUT = 50µA, VIN = 4.2V

µA

EN = 0.4V, VIN = 4.2V

Short Circuit Current

Limit (Note 7)

Output Grounded

OUT

Maximum Output

Current

(Note 6)

Logic Control Characteristics

Maximum Input Current

at V

EN input

EN = 0.4 and VIN= 6.0V

0.02

µA

Logic Low Input

Threshold

IN =VIN(MIN) to 6.0V

0.5

Logic High Input

Threshold

IN =VIN(MIN) to 6.0V

1.2

Timing Characteristics

Turn on Time(Note 7)

(Note 8)

170

250

µs

Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device

is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the Electrical

Characteristics tables.

Note 2: All voltages are with respect to the potential at the GND pin.

Note 3: The maximum ambient temperature (TA(max)) is dependant on the maximum operating junction temperature (TJ(max-op) = 125˚C), the maximum power

dissipation of the device in te application (PD(max)), and the junction to ambient thermal resistance of the part/package in the application (θJA), as given by the

following equation: TA(max) =TJ(max-op) -(θJA xPD(max)).

Note 4: The human body model is 100pF discharged through a 1.5k

Ω resistor into each pin. The machine model is a 200pF capacitor discharged directly into each

pin.

Note 5: Junction to ambient thermal resistance is dependant on the application and board layout. In applications where high maximum power dissipation is possible,

special care must be paid to thermal dissipation issues in board design.

Note 6: The device maintains the regulated output voltage without load.

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