LP2992ILDX-1.8 datasheet(3/28 Pages) TI1

Part #	LP2992ILDX-1.8

Description	LP2992 Micropower 250 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and WSON Packages Designed for Use with Very Low ESR Output Capacitors

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LP2992

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SNVS171G – NOVEMBER 2001 – REVISED MARCH 2013

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

Absolute Maximum Ratings

(1) (2)

Storage Temperature Range

−65°C to +150°C

Operating Junction Temperature Range

−40°C to +125°C

Lead Temp. (Soldering, 5 sec.)

260°C

ESD Rating (3)

2 kV

Power Dissipation (4)

Internally Limited

Input Supply Voltage (Survival)

−0.3V to +16V

Input Supply Voltage (Operating)

2.2V to +16V

Shutdown Input Voltage (Survival)

−0.3V to +16V

Output Voltage (Survival, (5))

−0.3V to +9V

IOUT (Survival)

Short Circuit Protected

Input-Output Voltage (Survival, (6))

−0.3V to +16V

(1)

“Absolute Maximum Ratings” indicate limits beyond which damage to the component may occur. Electrical specifications do not apply

when operating the device outside of its rated operating conditions.

(2)

If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and

specifications.

(3)

The ESD rating of pins 3 and 4 for the SOT-23 package, or pins 1 and 3 for the WSON package, is 1 kV.

(4)

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 temperture is calculated

using:

Where the value of

θJ-A for the SOT-23 package is 220°C/W in a typical PC board mounting and the WSON package is 65°C/W.

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

(5)

If used in a dual-supply system where the regulator load is returned to a negative supply, the LP2992 output must be diode-clamped to

ground.

(6)

The output PNP structure contains a diode between the VIN to VOUT terminals that is normally reverse-biased. Reversing the polarity

from VIN to VOUT will turn on this diode.

Electrical Characteristics

Limits in standard typeface are for TJ = 25°C. and limits in boldface type apply over the full operating temperature range.

Unless otherwise specified: VIN = VO(NOM) + 1V, IL = 1 mA, CIN = 1 µF, COUT = 4.7 µF, VON/OFF = 2V.

LP2992AI-X.X

LP2992I-X.X

Symbol

Parameter

Conditions

Typ

(1)

Units

Min

Max

Min

Max

ΔVO

Output Voltage

IL = 1 mA

−1.0

1.0

−1.5

1.5

Tolerance

1 mA

≤ IL ≤ 50 mA

−1.5

1.5

−2.5

2.5

−2.5

2.5

−3.5

3.5

%VNOM

1 mA

≤ IL ≤ 250 mA

−3.5

3.5

−4.0

4.0

−4.5

4.5

−5.0

5.0

ΔVO/ΔVIN

Output Voltage

VO(NOM)+1V ≤ VIN ≤ 16V

0.007

0.014

%/V

Line Regulation

0.032

VIN(min)

Minimum input voltage

2.05

2.20

V

required to maintain

output regulation

(1)

Limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation using

Statistical Quality Control (SQC) methods. The limits are used to calculate TI's Average Outgoing Quality Level (AOQL).

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