NSC LP2982AIM5-2.5, LP2982AIBPX-2.8, LP2982AIBP-3.0, LP2982AIBP-2.8, LP2982IM5X-5.0 Datasheet

LP2982
Micropower 50 mA Ultra Low-Dropout Regulator

LP2982 Micropower 50 mA Ultra Low-Dropout Regulator

March 2000

General Description

The LP2982 is a 50 mA, fixed-output voltage regulator de­signed to provide ultra low dropout and lower noise in battery
powered applications.

Using an optimized VIP
cess, the LP2982 delivers unequaled performance in all
specifications critical to battery-powered designs:

Dropout Voltage: Typically120 mV

@

1 mA load.

Ground Pin Current: Typically 375 µA

@

80 µA
Sleep Mode: Less than 1 µA quiescent current when on/off

pin is pulled low.
Smallest Possible Size: SOT-23and micro SMD packages

use absolute minimum board space.
Precision Output: 1.0% tolerance output voltages available

(A grade).
Low Noise: By adding an external bypass capacitor, output

noise can be reduced to 30 µV (typical).
Ten output voltage versions, from 2.5V to 5.0V, are available

as standard products.

1 mA load.

™

(Vertically Integrated PNP) pro-

@

50 mA load, and 7 mV

@

50 mA load, and

Block Diagram

Features

n Ultra low dropout voltage
n Guaranteed 50 mA output current
n Typical dropout voltage 180 mV
n Smallest possible size (SOT-23, micro SMD package)
n Requires minimum external components

<

n

1 µA quiescent current when shutdown

n Low ground pin current at all loads
n Output voltage accuracy 1.0% (A Grade)
n High peak current capability (150 mA typical)
n Wide supply voltage range (16V max)
n Low Z
n Overtemperature/overcurrent protection
n −40˚C to +125˚C junction temperature range
n Custom voltages available

0.3Ω typical (10 Hz to 1 MHz)

OUT

@

80 mA

Applications

n Cellular Phone
n Palmtop/Laptop Computer
n Personal Digital Assistant (PDA)
n Camcorder, Personal Stereo, Camera

DS012679-1

VIP™is a trademark of National Semiconductor Corporation.

© 2000 National Semiconductor Corporation DS012679 www.national.com

Connection Diagrams

LP2982

5-Lead Small Outline Package (M5)

micro SMD, 5 Bump Package (BPA05)

DS012679-3

Top View

See NS Package Number MF05A

For ordering information see

Basic Application Circuit

DS012679-55

Bottom View

See NS Package Number BPA05

Table 1

DS012679-2

*

ON/OFF input must be actively terminated. Tie to VINif this function is not to be used.

**

Minimum capacitance is shown to insure stability over full load current range. More capacitance provides superior dynamic performance (see Application

Hints).

***

See Application Hints.

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Ordering Information

LP2982

TABLE 1. Package Marking and Ordering Information

Output Voltage

(V) Grade Order Information

5-Lead Small Outline Package (M5)

2.5 A LP2982AIM5X-2.5 L58A 3000 Units on Tape and Reel

2.5 A LP2982AIM5-2.5 L58A 1000 Units on Tape and Reel

2.5 STD LP2982IM5X-2.5 L58B 3000 Units on Tape and Reel

2.5 STD LP2982IM5-2.5 L58B 1000Units on Tape and Reel

2.6 A LP2982AIM5X-2.6 LBYA 3000 Units on Tape and Reel

2.6 A LP2982AIM5-2.6 LBYA 1000 Units on Tape and Reel

2.6 STD LP2982IM5X-2.6 LBYB 3000 Units on Tape and Reel

2.6 STD LP2982IM5-2.6 LBYB 1000Units on Tape and Reel

2.8 A LP2982AIM5X-2.8 L60A 3000 Units on Tape and Reel

2.8 A LP2982AIM5-2.8 L60A 1000 Units on Tape and Reel

2.8 STD LP2982IM5X-2.8 L60B 3000 Units on Tape and Reel

2.8 STD LP2982IM5-2.8 L60B 1000 Units on Tape and Reel

3.0 A LP2982AIM5X-3.0 L20A 3000 Units on Tape and Reel

3.0 A LP2982AIM5-3.0 L20A 1000 Units on Tape and Reel

3.0 STD LP2982IM5X-3.0 L20B 3000 Units on Tape and Reel

3.0 STD LP2982IM5-3.0 L20B 1000 Units on Tape and Reel

3.3 A LP2982AIM5X-3.3 L19A 3000 Units on Tape and Reel

3.3 A LP2982AIM5-3.3 L19A 1000 Units on Tape and Reel

3.3 STD LP2982IM5X-3.3 L19B 3000 Units on Tape and Reel

3.3 STD LP2982IM5-3.3 L19B 1000 Units on Tape and Reel

3.6 A LP2982AIM5X-3.6 L0BA 3000 Units on Tape and Reel

3.6 A LP2982AIM5-3.6 L0BA 1000 Units on Tape and Reel

3.6 STD LP2982IM5X-3.6 L0BB 3000 Units on Tape and Reel

3.6 STD LP2982IM5-3.6 L0BB 1000 Units on Tape and Reel

3.8 A LP2982AIM5X-3.8 L76A 3000 Units on Tape and Reel

3.8 A LP2982AIM5-3.8 L76A 1000 Units on Tape and Reel

3.8 STD LP2982IM5X-3.8 L76B 3000 Units on Tape and Reel

3.8 STD LP2982IM5-3.8 L76B 1000 Units on Tape and Reel

4.0 A LP2982AIM5X-4.0 L29A 3000 Units on Tape and Reel

4.0 A LP2982AIM5-4.0 L29A 1000 Units on Tape and Reel

4.0 STD LP2982IM5X-4.0 L29B 3000 Units on Tape and Reel

4.0 STD LP2982IM5-4.0 L29B 1000 Units on Tape and Reel

4.5 A LP2982AIM5X-4.5 LA8A 3000 Units on Tape and Reel

4.5 A LP2982AIM5-4.5 LA8A 1000 Units on Tape and Reel

4.5 STD LP2982IM5X-4.5 LA8B 3000 Units on Tape and Reel

4.5 STD LP2982IM5-4.5 LA8B 1000 Units on Tape and Reel

4.7 A LP2982AIM5X-4.7 L0HA 3000 Units on Tape and Reel

4.7 A LP2982AIM5-4.7 L0HA 1000 Units on Tape and Reel

4.7 STD LP2982IM5X-4.7 L0HB 3000 Units on Tape and Reel

4.7 STD LP2982IM5-4.7 L0HB 1000 Units on Tape and Reel

5.0 A LP2982AIM5X-5.0 L18A 3000 Units on Tape and Reel

5.0 A LP2982AIM5-5.0 L18A 1000 Units on Tape and Reel

5.0 STD LP2982IM5X-5.0 L18B 3000 Units on Tape and Reel

5.0 STD LP2982IM5-5.0 L18B 1000 Units on Tape and Reel

5.3 A LP2982AIM5X-5.3 LBZA 3000 Units on Tape and Reel

Package

Marking Supplied as:

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Ordering Information (Continued)

LP2982

Output Voltage

(V) Grade Order Information

5-Lead Small Outline Package (M5)

5.3 A LP2982AIM5-5.3 LBZA 1000 Units on Tape and Reel

5.3 STD LP2982IM5X-5.3 LBZB 3000 Units on Tape and Reel

5.3 STD LP2982IM5-5.3 LBZB 1000 Units on Tape and Reel

micro SMD, 5 Bump Package (BPA05)

2.8 A LP2982AIBP-2.8 250 Units on Tape and Reel

2.8 A LP2982AIBPX-2.8 3000 Units on Tape and Reel

2.8 STD LP2982IBP-2.8 250 Units on Tape and Reel

2.8 STD LP2982IBPX-2.8 3000 Units on Tape and Reel

3.0 A LP2982AIBP-3.0 250 Units on Tape and Reel

3.0 A LP2982AIBPX-3.0 3000 Units on Tape and Reel

3.0 STD LP2982IBP-3.0 250 Units on Tape and Reel

3.0 STD LP2982IBPX-3.0 3000 Units on Tape and Reel

TABLE 1. Package Marking and Ordering Information (Continued)

Package

Marking Supplied as:

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LP2982

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

Storage Temperature Range −65˚C to +150˚C
Operating Junction Temperature Range −40˚C to +125˚C
Lead Temperature (Soldering, 5 sec.) 260˚C

Power Dissipation (Note 3) Internally Limited
Input Supply Voltage (Survival) −0.3V to +16V
Input Supply Voltage (Operating) 2.1V to +16V
Shutdown Input Voltage (Survival) −0.3V to +16V
Output Voltage (Survival, (Note 4)) −0.3V to +9V

(Survival) Short Circuit Protected

I

OUT

Input-Output Voltage (Survival, (Note 5)) −0.3V to +16V

ESD Rating (Note 2) 2 kV

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: V

IN=VO(NOM)

Symbol Parameter Conditions Typ LP2982AI-X.X LP2982I-X.X Units

∆V

O

Output Voltage
Tolerance

Output Voltage Line
Regulation

V

IN–VO

Dropout Voltage IL=0 133
(Note 7) 55

I

GND

V

ON/OFF

Ground Pin Current IL= 0 65 95 95

ON/OFF Input Voltage High = O/P ON 1.4 1.6 1.6
(Note 8) Low = O/P OFF 0.55 0.15 0.15

I

ON/OFF

I

O(PK)

V

IN–VO

I

GND

e

n

ON/OFF Input Current V

Peak Output Current V
Dropout Voltage IL= 80 mA 180 225 225 mV

Ground Pin Current IL= 80 mA 525 750 750 µA

Output Noise Voltage
(RMS)

+ 1V, IL= 1 mA, CIN= 1 µF, C

= 4.7 µF, V

OUT

ON/OFF

= 2V.

(Note 6) (Note 6)

Min Max Min Max

I

= 1 mA −1.0 +1.0 −1.5 +1.5

L

1mA<I

<

50 mA −1.5 +1.5 −2.0 +2.0

L

%V

−2.0 +2.0 −3.5 +3.5

V

+1V≤VIN≤ 16V

O(NOM)

0.007 0.014 0.014

0.032 0.032

I

= 1 mA 7 10 10

L

15 15

I

=10mA 406060

L

90 90

I

= 50 mA 120 150 150

L

225 225

125 125

I

= 1 mA 80 110 110

L

170 170

I

= 10 mA 140 220 220

L

460 460

I

= 50 mA 375 600 600

L

1200 1200

V
V

V

<

ON/OFF
ON/OFF

ON/OFF
ON/OFF
OUT

0.3V 0.01 0.8 0.8

<

0.15V 0.10 2.0 2.0

= 0 0.01 −2 −2
=5V 5 15 15

≥ V

− 5% 150 100 100 mA

O(NOM)

325 325

1400 1400

BW = 300 Hz–50 kHz,
C

OUT

C

BYPASS

=10µF

= 0.01 µF

30

NOM

%/V

mV

µA

V

µA

µV

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Electrical Characteristics (Continued)

LP2982

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=V

Symbol Parameter Conditions Typ LP2982AI-X.X LP2982I-X.X Units

Ripple Rejection f = 1 kHz

+ 1V, IL= 1 mA, CIN= 1 µF, C

O(NOM)

=10µF

C

OUT

OUT

= 4.7 µF, V

ON/OFF

= 2V.

(Note 6) (Note 6)

Min Max Min Max

45 dB

I

O(MAX)

Note 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.

Note 2: The ESD rating of pins 3 and 4 is 1 kV.
Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, T

the ambient temperature, T

The value of θJAfor the SOT-23 package is 220˚C/W and the micro SMD package is 320˚C/W. Exceeding the maximum allowable power dissipation will cause ex­cessive die temperature, and the regulator will go into thermal shutdown.

Note 4: If used in a dual-supply system where the regulator load is returned to a negative supply, the LP2982 output must be diode-clamped to ground.
Note 5: The output PNP structure contains a diode between the V

will turn on this diode.
Note 6: temperature range are guaranteed through correlation using Statistical Quality Control (SQC) methods. The limits are used to calculate National’s Average

Outgoing Quality Level (AOQL).

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.
Note 8: The ON/OFF inputs must be properly driven to prevent possible misoperation. For details, refer to Application Hints.
Note 9: See Typical Performance Characteristics curves.

Typical Performance Characteristics Unless otherwise specified: T

C

OUT

Output Voltage vs
Temperature

Short Circuit Current RL= 0 (Steady State)

(Note 9)

. The maximum allowable power dissipation at any ambient temperature is calculated using:

A

IN

and V

terminals that is normally reverse-biased. Reversing the polarity from VINto V

OUT

= 4.7 µF, CIN= 1 µF, all voltage options, ON/OFF pin tied to VIN.

Output Voltage vs
Temperature

150 mA

, the junction-to-ambient thermal resistance, θJA, and

J(MAX)

= 25˚C, VIN=V

A

O(NOM)

+1V,

OUT

DS012679-4

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DS012679-5

LP2982

Typical Performance Characteristics Unless otherwise specified: T

C

= 4.7 µF, CIN= 1 µF, all voltage options, ON/OFF pin tied to VIN. (Continued)

OUT

Output Voltage vs
Temparature

DS012679-6

Dropout Characteristics

Dropout Characteristics

Dropout Characteristics

= 25˚C, VIN=V

A

DS012679-7

O(NOM)

+ 1V,

Dropout Voltage vs
Temperature

DS012679-8

DS012679-10

DS012679-9

Dropout Voltage vs
Load Current

DS012679-11

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Typical Performance Characteristics Unless otherwise specified: T

C

= 4.7 µF, CIN= 1 µF, all voltage options, ON/OFF pin tied to VIN. (Continued)

OUT

LP2982

= 25˚C, VIN=V

A

O(NOM)

+ 1V,

Ground Pin Current vs
Temperature

Input Current vs V

IN

DS012679-12

Ground Pin Current vs
Load Current

Input Current vs V

IN

DS012679-13

Line Transient Response

DS012679-14

DS012679-16

DS012679-15

Line Transient Response

DS012679-17

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LP2982

Typical Performance Characteristics Unless otherwise specified: T

C

= 4.7 µF, CIN= 1 µF, all voltage options, ON/OFF pin tied to VIN. (Continued)

OUT

Load Transient Response

DS012679-18

Load Transient Response

Load Transient Response

Load Transient Response

= 25˚C, VIN=V

A

O(NOM)

DS012679-19

+ 1V,

Short Circuit Current

DS012679-20

DS012679-22

DS012679-21

Instantaneous Short Circuit
Current vs Temperature

DS012679-23

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Typical Performance Characteristics Unless otherwise specified: T

C

= 4.7 µF, CIN= 1 µF, all voltage options, ON/OFF pin tied to VIN. (Continued)

OUT

LP2982

= 25˚C, VIN=V

A

O(NOM)

+ 1V,

Short Circuit Current

Output Impedance vs
Frequency

Instantaneous Short Circuit
Current vs Output Voltage

DS012679-24

DS012679-25

Output Impedance vs
Frequency

DS012679-26

ON/OFF Pin Current vs
V

ON/OFF

DS012679-34

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ON/OFF Threshold
vs Temperature

DS012679-29

DS012679-35

LP2982

Typical Performance Characteristics Unless otherwise specified: T

C

= 4.7 µF, CIN= 1 µF, all voltage options, ON/OFF pin tied to VIN. (Continued)

OUT

Input to Output Leakage
vs Temperature

DS012679-30

Output Noise Density

Output Reverse Leakage vs
Temperature

Output Noise Density

= 25˚C, VIN=V

A

O(NOM)

DS012679-31

+ 1V,

Output Noise Density

DS012679-48

DS012679-42

Ripple Rejection

DS012679-49

DS012679-41

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Typical Performance Characteristics Unless otherwise specified: T

C

= 4.7 µF, CIN= 1 µF, all voltage options, ON/OFF pin tied to VIN. (Continued)

OUT

LP2982

= 25˚C, VIN=V

A

O(NOM)

+ 1V,

Turn-ON Waveform

Turn-ON Waveform

DS012679-50

Turn-ON Waveform

DS012679-51

DS012679-52

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Application Hints

EXTERNAL CAPACITORS

Like any low-dropout regulator, the external capacitors used
with the LP2982 must be carefully selectedto assure regula­tor loop stability.

INPUT CAPACITOR: An input capacitor whose value is ≥
1 µF is required with the LP2982 (amount of capacitance can
be increased without limit).

This capacitor must be located a distance of not more than

0.5" from the input pin ofthe LP2982 andreturned to aclean
analog ground. Any good quality ceramic or tantalum can be
used for this capacitor.

OUTPUT CAPACITOR: The output capacitor must meet
both the requirement for minimum amount of capacitance
and E.S.R. (equivalent series resistance) value. Curves are
provided which show the allowable ESR range as a function
of load current for various output voltages and capacitor val­ues (refer to

IMPORTANT: The output capacitor must maintain its ESR in
the stable region over the full operating temperature to as­sure stability. Also, capacitor tolerance and variation with
temperature must be considered to assure the minimum
amount of capacitance is provided at all times.

This capacitor should be located not more than0.5" from the
output pin of the LP2982 and returned to a clean analog
ground.

LOW-CURRENT OPERATION: In applications where the
load current is
to the output capacitor.

Circuitry inside the LP2982 is specially designed to reduce
operating (quiescent) current at light loads down to about
65 µA.

The mode of operation which yields this very low quiescent
current also means that the output capacitor ESR is critical.

For optimum stability and minimum output noise, it is recom­mended that a 10Ω resistor be placed in series with the out­put capacitor in any applications where I

Figure 1,Figure 2

<

1 mA, special consideration must be given

).

<

1 mA.

L

LP2982

meet the same ESR requirements over the operating tem­perature range, which is more difficult because of their large
increase in ESR at cold temperature.

An aluminum electrolytic can exhibit an ESR increase of as
much as 50X when going from 20˚C to −40˚C. Also, some
aluminum electrolytic are not operational below −25˚C be­cause the electrolyte can freeze.

DS012679-43

FIGURE 1. 5V/2.2 µF ESR Curves

CAPACITOR CHARACTERISTICS
TANTALUM: Tantalum capacitors are the best choice for

use with the LP2982. Most good quality tantalum can be
used with the LP2982, but check the manufacturer’s data
sheet to be sure the ESR is in range.

It is important to remember that ESR increases sharply at
lower temperatures (
upper limit for stability at room temperature can cause insta­bility when it gets cold.

In applications which must operate at very low temperatures,
it may be necessary to parallel the output tantalum capacitor
with a ceramic capacitor to prevent the ESR from going up
too high (see next section for important information on ce­ramic capacitors).

CERAMIC: Ceramic capacitors are not recommended for
use at the output of the LP2982. This is because the ESR of
a ceramic can be low enough to go below the minimum
stable value for the LP2982. A good 2.2 µF ceramic was
measured and found to have an ESR of about 15 mΩ,which
is low enough to cause oscillations.

If a ceramic capacitor is used on the output, a 1Ω resistor
should be placed in series with the capacitor.

ALUMINUM: Because of large physical size, aluminum elec­trolytic are not typically used with the LP2982. They must

<

10˚C) and a capacitor thatis near the

DS012679-44

FIGURE 2. 3V/4.7 µF ESR Curves

BYPASS CAPACITOR

The 0.01 µF capacitor connected to the bypass pin to reduce
noise must have very low leakage.

The current flowing out of the bypass pin comes from the
bandgap reference, which is used to set the output voltage.

This capacitor leakage current causes the output voltage to
decline by an amount proportional tothe current. Typical val­ues are −0.015%/nA

−0.035%/nA
This data is valid up to a maximum leakage current of about

500 nA, beyond which the bandgap is so severely loaded
that it can not function.

Care must be taken to ensurethat the capacitor selected will
not have excessive leakage current over the operating tem­perature range of the application.

A high quality ceramic capacitor which uses either NPO or
COG type dielectric material will typically have very low leak­age. Small surface mount polypropylene or polycarbonate
film capacitors also have extremely low leakage, but are
slightly larger than ceramics.

@

+125˚C.

@

−40˚C, −0.021%/nA@25˚C, and

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Application Hints (Continued)

LP2982

REVERSE CURRENT PATH

The power transistor used in the LP2982 has an inherent di­ode connected between the regulator input and output (see
below).

DS012679-39

If the output is forced above the input by more than a V
this diode will become forward biased and current will flow
from the V

<

100 mA to prevent damage to the part.

The internal diode can also be turned on by abruptly step­ping the input voltage to a value below the output voltage.

To prevent regulator misoperation, a Schottky diode should
be used in any application where input/output voltage condi­tions can cause the internal diode to be turned on (see be­low).

As shown, the Schottky diode is connected in parallel with
the internal parasitic diode and prevents it from being turned
on by limiting the voltage drop across it to about 0.3V.

terminal to VIN. This currentmust be limited to

OUT

DS012679-40

ON/OFF INPUT OPERATION

The LP2982 is shut off by pulling the ON/OFF input low, and
turned on by driving the input high. If this feature is not to be
used, the ON/OFF input should be tied to V

to keep the

IN

regulator on at all times (the ON/OFF input must not be left
floating).

To ensure proper operation, the signal source used to drive
the ON/OFF input must be able to swing above and below
the specified turn-on/turn-off voltage thresholds which guar­antee an ON or OFF state (see Electrical Characteristics).

The ON/OFF signal may come from either a totem-pole out­put, or an open-collector output with pull-up resistor to the
LP2982 input voltage or another logic supply. The high-level

,

BE

voltage may exceed the LP2982 input voltage, but must re­main within the Absolute Maximum Ratings for the ON/OFF
pin.

It is also important that the turn-on/turn-off voltage signals
applied to the ON/OFF input have a slew rate which is
greater than 40 mV/µs.

Important: the regulator shutdown function will operate incor­rectly if a slow-moving signal isapplied to theON/OFF input.

Micro SMD Mounting

The micro SMD package requires specific mounting tech­niques which are detailed in National Semiconductor Appli­cation Note

Technology (SMT) Assembly Considerations

#

1112. Referring to the section

Surface Mount

, it should be
noted that the pad style which must be used with the 5-pin
package is the NSMD (non-solder mask defined) type.

For best results during assembly, alignment ordinals on the
PC board may be used to facilitate placement of the micro
SMD device.

Micro SMD Light Sensitivity

Exposing the micro SMD device to direct sunlight will cause
misoperation of the device. Light sources such as Halogen
lamps can also affect electrical performance if brought near
to the device.

The wavelenghts which have the most detrimental effect are
reds and infra-reds, which means that the fluorescent light­ing used inside most buildings has very little effecton perfor­mance. A micro SMD test board was brought to within 1 cm
of a fluorescent desk lamp and the effect on the regulated
output voltage was negligible, showing a deviation of less
than 0.1% from nominal.

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Physical Dimensions inches (millimeters) unless otherwise noted

LP2982

For Order Numbers, refer to

5-Lead Small Outline Package (M5)

NS Package Number MF05A

Table 1

in the “Ordering Information” section of this document.

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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

LP2982

NOTES: UNLESS OTHERWISE SPECIFIED

1. EPOXY COATING

2. 63Sn/37Pb EUTECTIC BUMP

3. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD.

4. PIN 1 IS ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION. REMAINING PINS ARE
NUMBERED COUNTER CLOCKWISE.

5. XXX IN DRAWING NUMBER REPRESENTS PACKAGE SIZE VARIATION WHERE X1 IS PACKAGE WIDTH, X2 IS PACK­AGE LENGTH AND X3 IS PACKAGE HEIGHT.

6.NO JEDEC REGISTRATION AS OF AUG.1999.

micro SMD, 5 Bump, Package (BPA05)

NS Package Number BPA05A

For Order Numbers, refer to

The dimensions for X1, X2 and X3 are as given:

Table 1

“Ordering Information” section of this document.

X1 = 0.930 +/− 0.030mm
X2 = 1.107 +/− 0.030mm
X3 = 0.850 +/− 0.050mm

www.national.com 16

Notes

LP2982 Micropower 50 mA Ultra Low-Dropout Regulator

LIFE SUPPORT POLICY

NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the

2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.

labeling, can be reasonably expected to result in a
significant injury to the user.

National Semiconductor
Corporation

Americas
Tel: [phone]
Fax: [phone]
Email: [e-mail]

www.national.com

National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.

National Semiconductor
Europe

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