NSC LP2980AIM5-4.7, LP2980AIM5-4.5, LP2980AIM5-4.0, LP2980AIM5X-3.2, LP2980IM5-3.1 Datasheet

LP2980
Micropower 50 mA Ultra Low-Dropout Regulator In
SOT-23 and micro SMD Packages

General Description

The LP2980 is a 50 mA, fixed-output voltage regulator de­signed specifically to meet the requirements of battery­powered applications.

Using an optimized VIP

™

(Vertically Integrated PNP) pro­cess, the LP2980 delivers unequaled performance in all
specifications critical to battery-powered designs:

Dropout Voltage. Typically 120 mV

@

50 mA load, and 7 mV

@

1 mA load.

Ground Pin Current. Typically 375 µA

@

50 mA load, and 80

µA

@

1 mA load.

Sleep Mode. Less than 1 µA quiescent current when ON/
OFF pin is pulled low.

Smallest Possible Size. SOT-23 and micro SMD packages
use an absolute minimum board space.

Minimum Part Count. Requires only 1 µF of external ca­pacitance on the regulator output.

Precision Output. 0.5% tolerance output voltages available
(A grade).

5.0V, 3.3V, and 3.0V versions available as standard prod­ucts.

Features

n Ultra low dropout voltage
n Output voltage accuracy 0.5% (A Grade)
n Guaranteed 50 mA output current
n Smallest possible size (SOT-23, micro SMD package)
n Requires only 1 µF external capacitance

n

<

1 µA quiescent current when shutdown

n Low ground pin current at all load currents
n High peak current capability (150 mA typical)
n Wide supply voltage range (16V max)
n Fast dynamic response to line and load
n Low Z

OUT

over wide frequency range

n Overtemperature/overcurrent protection
n −40˚C to +125˚C junction temperature range

Applications

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

Block Diagram

01207801

VIP™is a trademark of National Semiconductor Corporation.

January 2003

LP2980 Micropower 50 mA Ultra Low-Dropout Regulator In SOT-23 and micro SMD Packages

© 2003 National Semiconductor Corporation DS012078 www.national.com

Connection Diagram and Ordering Information

5-Lead Small Outline Package (M5) micro SMD, 5 Bump Package (BPA05)

01207803

Top View

See NS Package Number MF05A

For ordering information see Table 1

01207864

Note: The actual physical placement of the package marking will vary from
part to part. Package marking contains date code and lot traceability
information, and will vary considerably. Package marking does not correlate
to device type.

Top View

See NS Package Number BPA05

Pin Descrption

Name Pin Number Function

SOT-23 micro SMD

V

IN

1 C3 Input Voltage

GND 2 A1 Common Ground (device substrate)

ON/OFF 3 A3 Logic high enable input

N/C 4 B2 Post package trim - do not connect to this pin

V

OUT

5 C1 Regulated output voltage

Ordering Information

TABLE 1. Package Marking and Order Information

Output Voltage

(V)

Grade Order Information Package

Marking

Supplied as:

5-Lead Small Outline Package (M5)

For output voltages ≤ 2.3V, refer to LP2980LV datasheet. If a non-standard voltage is required, see LP2980-ADJ.

2.5 A LP2980AIM5X-2.5 L0NA 3000 Units on Tape and Reel

2.5 A LP2980AIM5-2.5 L0NA 1000 Units on Tape and Reel

2.5 STD LP2980IM5X-2.5 L0NB 3000 Units on Tape and Reel

2.5 STD LP2980IM5-2.5 L0NB 1000 Units on Tape and Reel

2.6 A LP2980AIM5X-2.6 L48A 3000 Units on Tape and Reel

2.6 A LP2980AIM5-2.6 L48A 1000 Units on Tape and Reel

2.6 STD LP2980IM5X-2.6 L48B 3000 Units on Tape and Reel

2.6 STD LP2980IM5-2.6 L48B 1000 Units on Tape and Reel

2.7 A LP2980AIM5X-2.7 L26A 3000 Units on Tape and Reel

2.7 A LP2980AIM5-2.7 L26A 1000 Units on Tape and Reel

2.7 STD LP2980IM5X-2.7 L26B 3000 Units on Tape and Reel

2.7 STD LP2980IM5-2.7 L26B 1000 Units on Tape and Reel

2.8 A LP2980AIM5X-2.8 L13A 3000 Units on Tape and Reel

2.8 A LP2980AIM5-2.8 L13A 1000 Units on Tape and Reel

2.8 STD LP2980IM5X-2.8 L13B 3000 Units on Tape and Reel

2.8 STD LP2980IM5-2.8 L13B 1000 Units on Tape and Reel

2.9 A LP2980AIM5X-2.9 L12A 3000 Units on Tape and Reel

2.9 A LP2980AIM5-2.9 L12A 1000 Units on Tape and Reel

2.9 STD LP2980IM5X-2.9 L12B 3000 Units on Tape and Reel

LP2980

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Ordering Information (Continued)

TABLE 1. Package Marking and Order Information (Continued)

Output Voltage

(V)

Grade Order Information Package

Marking

Supplied as:

2.9 STD LP2980IM5-2.9 L12B 1000 Units on Tape and Reel

3.0 A LP2980AIM5X-3.0 L02A 3000 Units on Tape and Reel

3.0 A LP2980AIM5-3.0 L02A 1000 Units on Tape and Reel

3.0 STD LP2980IM5X-3.0 L02B 3000 Units on Tape and Reel

3.0 STD LP2980IM5-3.0 L02B 1000 Units on Tape and Reel

3.1 A LP2980AIM5X-3.1 L30A 3000 Units on Tape and Reel

3.1 A LP2980AIM5-3.1 L30A 1000 Units on Tape and Reel

3.1 STD LP2980IM5X-3.1 L30B 3000 Units on Tape and Reel

3.1 STD LP2980IM5-3.1 L30B 1000 Units on Tape and Reel

3.2 A LP2980AIM5X-3.2 L31A 3000 Units on Tape and Reel

3.2 A LP2980AIM5-3.2 L31A 1000 Units on Tape and Reel

3.2 STD LP2980IM5X-3.2 L31B 3000 Units on Tape and Reel

3.2 STD LP2980IM5-3.2 L31B 1000 Units on Tape and Reel

3.3 A LP2980AIM5X-3.3 L00A 3000 Units on Tape and Reel

3.3 A LP2980AIM5-3.3 L00A 1000 Units on Tape and Reel

3.3 STD LP2980IM5X-3.3 L00B 3000 Units on Tape and Reel

3.3 STD LP2980IM5-3.3 L00B 1000 Units on Tape and Reel

3.5 A LP2980AIM5X-3.5 L27A 3000 Units on Tape and Reel

3.5 A LP2980AIM5-3.5 L27A 1000 Units on Tape and Reel

3.5 STD LP2980IM5X-3.5 L27B 3000 Units on Tape and Reel

3.5 STD LP2980IM5-3.5 L27B 1000 Units on Tape and Reel

3.6 A LP2980AIM5X-3.6 L28A 3000 Units on Tape and Reel

3.6 A LP2980AIM5-3.6 L28A 1000 Units on Tape and Reel

3.6 STD LP2980IM5X-3.6 L28B 3000 Units on Tape and Reel

3.6 STD LP2980IM5-3.6 L28B 1000 Units on Tape and Reel

3.8 A LP2980AIM5X-3.8 L21A 3000 Units on Tape and Reel

3.8 A LP2980AIM5-3.8 L21A 1000 Units on Tape and Reel

3.8 STD LP2980IM5X-3.8 L21B 3000 Units on Tape and Reel

3.8 STD LP2980IM5-3.8 L21B 1000 Units on Tape and Reel

4.0 A LP2980AIM5X-4.0 L25A 3000 Units on Tape and Reel

4.0 A LP2980AIM5-4.0 L25A 1000 Units on Tape and Reel

4.0 STD LP2980IM5X-4.0 L25B 3000 Units on Tape and Reel

4.0 STD LP2980IM5-4.0 L25B 1000 Units on Tape and Reel

4.5 A LP2980AIM5X-4.5 L0XA 3000 Units on Tape and Reel

4.5 A LP2980AIM5-4.5 L0XA 1000 Units on Tape and Reel

4.5 STD LP2980IM5X-4.5 L0XB 3000 Units on Tape and Reel

4.5 STD LP2980IM5-4.5 L0XB 1000 Units on Tape and Reel

4.7 A LP2980AIM5X-4.7 L37A 3000 Units on Tape and Reel

4.7 A LP2980AIM5-4.7 L37A 1000 Units on Tape and Reel

4.7 STD LP2980IM5X-4.7 L37B 3000 Units on Tape and Reel

4.7 STD LP2980IM5-4.7 L37B 1000 Units on Tape and Reel

5.0 A LP2980AIM5X-5.0 L01A 3000 Units on Tape and Reel

5.0 A LP2980AIM5-5.0 L01A 1000 Units on Tape and Reel

5.0 STD LP2980IM5X-5.0 L01B 3000 Units on Tape and Reel

5.0 STD LP2980IM5-5.0 L01B 1000 Units on Tape and Reel

micro SMD, 5 Bump Package (BPA05)

3.3 A LP2980AIBP-3.3 250 Units on Tape and Reel

LP2980

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Ordering Information (Continued)

TABLE 1. Package Marking and Order Information (Continued)

Output Voltage

(V)

Grade Order Information Package

Marking

Supplied as:

3.3 A LP2980AIBPX-3.3 3000 Units on Tape and Reel

3.3 STD LP2980IBP-3.3 250 Units on Tape and Reel

3.3 STD LP2980IBPX-3.3 3000 Units on Tape and Reel

5.0 A LP2980AIBP-5.0 250 Units on Tape and Reel

5.0 A LP2980AIBPX-5.0 3000 Units on Tape and Reel

5.0 STD LP2980IBP-5.0 250 Units on Tape and Reel

5.0 STD LP2980IBPX-5.0 3000 Units on Tape and Reel

LP2980

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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

ESD Rating (Note 2) 2 kV

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

I

OUT

(Survival) Short Circuit Protected

Input-Output Voltage (Survival),

(Note 5) −0.3V to +16V

Electrical Characteristics (Note 10)

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)

+ 1V, IL= 1 mA, C

OUT

= 1 µF, V

ON/OFF

= 2V.

Symbol Parameter Conditions Typ LP2980AI-XX LP2980I-XX Units

(Note 6) (Note 6)

Min Max Min Max

∆V

O

Output Voltage
Tolerance

IL= 1 mA −0.50 0.50 −1.0 1.0

%V

NOM

1mA<I

L

<

50 mA −0.75 0.75 −1.5 1.5

−2.5 2.5 −3.5 3.5

Output Voltage V

O(NOM)

+1V

0.007

0.014 0.014

%/V

Line Regulation ≤ V

IN

≤ 16V 0.032 0.032

V

IN–VO

Dropout Voltage IL=0 133mV

(Note 7) 55

I

L

= 1 mA 7 10 10

15 15

I

L

=10mA 406060

90 90

I

L

= 50 mA 120 150 150

225 225

I

GND

Ground Pin Current IL= 0 65 95 95 µA

125 125

I

L

= 1 mA 80 110 110

170 170

I

L

= 10 mA 140 220 220

460 460

I

L

= 50 mA 375 600 600

1200 1200

V

ON/OFF

<

0.18V 0 11

V

ON/OFF

ON/OFF Input Voltage High = O/P ON 1.4 1.6 1.6 V

(Note 8) Low = O/P OFF 0.55 0.18 0.18

I

ON/OFF

ON/OFF Input Current V

ON/OFF

=0 0 −1 −1 µA

V

ON/OFF

=5V 5 15 15

I

O(PK)

Peak Output Current V

OUT

≥ V

O(NOM)

− 5% 150 100 100 mA

e

n

Output Noise BW = 300 Hz–50 kHz, 160 µV

Voltage (RMS) C

OUT

=10µF

Ripple Rejection f = 1 kHz

63 dB

C

OUT

=10µF

I

O(MAX)

Short Circuit Current RL= 0 (Steady State)

(Note 9)

150 mA

LP2980

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Electrical Characteristics (Note 10) (Continued)

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 for the SOT-23 package, or pins 5 and 2 for the micro SMD package, is 1 kV.

Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, T

J(MAX)

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

the ambient temperature, T

A

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

The value of θJAfor the SOT-23 package is 220˚C/W and the micro SMD package is 255˚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 LP2980 output must be diode-clamped to ground.

Note 5: The output PNP structure contains a diode between the V

IN

and V

OUT

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

OUT

will turn on this diode (see Application Hints).

Note 6: Limits are 100% production tested at 25˚C. Limits over the operating 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 misoperation. For details, refer to Application Hints.

Note 9: See Typical Performance Characteristics curves.

Note 10: Exposing the micro SMD device to direct sunlight will cause misoperation. See Application Hints for additional information.

Basic Application Circuit

01207802

*

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

**

Minimum Output Capacitance is 1 µF to insure stability over full load current range. More capacitance provides superior dynamic performance and additional

stability margin (see Application Hints).

***

Do not make connections to this pin.

LP2980

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