LP2992

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SNVS171G –NOVEMBER 2001–REVISED MARCH 2013

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

Check for Samples: LP2992

FEATURES

DESCRIPTION

The LP2992 is a 250 mA, fixed-output voltage

• Ultra Low Dropout Voltage

regulator designed to provide ultra low-dropout and

• Specified 250 mA Output Current

low noise in battery powered applications.

• Smallest Possible Size (SOT-23, WSON

Using an optimized VIP (Vertically Integrated PNP)

Package)

process, the LP2992 delivers unequaled performance

• Requires Minimum External Components

in all specifications critical to battery-powered

designs:

• Stable with Low-ESR Output Capacitor

• <1 µA Quiescent Current when Shut Down

Dropout Voltage: Typically 450 mV @ 250 mA load,

and 5 mV @ 1 mA load.

• Low Ground Pin Current at all Loads

• Output Voltage Accuracy 1% (A Grade)

Ground Pin Current: Typically 1500 µA @ 250 mA

load, and 75 µA @ 1 mA load.

• High Peak Current Capability

• Wide Supply Voltage Range (16V Max)

Enhanced Stability: The LP2992 is stable with

output capacitor ESR as low as 5 mΩ, which allows

• Low Z

OUT

: 0.3Ω Typical (10 Hz to 1 MHz)

the use of ceramic capacitors on the output.

• Overtemperature/overcurrent Protection

Sleep Mode: Less than 1 µA quiescent current when

• −40°C to +125°C Junction Temperature Range

ON/OFF pin is pulled low.

• Custom Voltages Available

Smallest Possible Size: SOT-23 and WSON

packages use absolute minimum board space.

APPLICATIONS

Precision Output: 1% tolerance output voltages

• Cellular Phone

available (A grade).

• Palmtop/Laptop Computer

Low Noise: By adding a 10 nF bypass capacitor,

• Personal Digital Assistant (PDA)

output noise can be reduced to 30 µV (typical).

• Camcorder, Personal Stereo, Camera

Multiple voltage options, from 1.5V to 5.0V, are

available as standard products. Consult factory for

custom voltages.

Block Diagram

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

LP2992

SNVS171G –NOVEMBER 2001–REVISED MARCH 2013

www.ti.com

Basic Application Circuit

*ON/OFF input must be actively terminated. Tie to V

if this function is not to be used.

**Minimum capacitance is shown to ensure stability (may be increased without limit). Ceramic capacitor required for

output (see Application Hints).

***Reduces output noise (may be omitted if application is not noise critical). Use ceramic or film type with very low

leakage current (see Application Hints).

Connection Diagram

Figure 1. Top View

5-Lead SOT-23 (DBV)

See Package Number DBV0005A

Figure 2. Top View

6-Lead WSON Package (NGD)

See Package Number NGD0006A

Product Folder Links: LP2992

LP2992

www.ti.com

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

OUT

(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, T

(MAX), the junction-to-ambient thermal

resistance, θ

J-A

, and the ambient temperature, T

. The maximum allowable power dissipation at any ambient temperture is calculated

using:

Where the value of θ

J-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 V

to V

OUT

terminals that is normally reverse-biased. Reversing the polarity

from V

to V

OUT

will turn on this diode.

Electrical Characteristics

Limits in standard typeface are for T

= 25°C. and limits in boldface type apply over the full operating temperature range.

Unless otherwise specified: V

= V

(NOM) + 1V, I

= 1 mA, C

= 1 µF, C

OUT

= 4.7 µF, V

ON/OFF

= 2V.

LP2992AI-X.X LP2992I-X.X

Symbol Parameter Conditions Typ

(1) (1)

Units

Min Max Min Max

ΔV

Output Voltage I

= 1 mA −1.0 1.0 −1.5 1.5

Tolerance

1 mA ≤ I

≤ 50 mA −1.5 1.5 −2.5 2.5

−2.5 2.5 −3.5 3.5 %V

NOM

1 mA ≤ I

≤ 250 mA −3.5 3.5 −4.0 4.0

−4.5 4.5 −5.0 5.0

ΔV

/ΔV

Output Voltage V

(NOM)+1V ≤ V

≤ 16V 0.007 0.014 0.014

%/V

Line Regulation 0.032 0.032

(min) Minimum input voltage 2.05 2.20 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).

Product Folder Links: LP2992

Part #	LP2992IM5-5.0
Description	IC REG LDO 5V 0.25A SOT23-5
Category	IC
Availability	Out of Stock
Qty	0

LP2992IM5-5.0

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