National Semiconductor LP2980 Technical data

LP2980
Micropower 50 mA Ultra Low-Dropout Regulator

LP2980 Micropower 50 mA Ultra Low-Dropout Regulator

April 2000

General Description

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

Using an optimized VIP
cess, the LP2980 delivers unequaled performance in all
specifications critical to battery-powered designs:

Dropout Voltage. Typically 120mV

@

1 mA load.

Ground PinCurrent. Typically375 µA

@

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.

™

(Vertically Integrated PNP) pro-

@

50 mAload, and7 mV

@

50 mAload, and80

Block Diagram

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

over wide frequency range

OUT

Applications

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

DS012078-1

Connection Diagram and Ordering Information

5-Lead Small Outline Package (M5)

DS012078-3

Top View

See NS Package Number MF05A

For ordering information see

VIP™is a trademark of National Semiconductor Corporation.

© 2000 National Semiconductor Corporation DS012078 www.national.com

Table 1

micro SMD, 5 Bump Package (BPA05)

DS012078-60

Bottom View

See NS Package Number BPA05

Ordering Information

LP2980

TABLE 1. Package Marking and Order Information

Output Voltage

(V)

5-Lead Small Outline Package (M5)
For output voltages ≤ 2V, 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

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

Grade Order Information Package

Marking

Supplied as:

www.national.com 2

Ordering Information (Continued)

TABLE 1. Package Marking and Order Information (Continued)

Output Voltage

(V)

For output voltages ≤ 2V, refer to LP2980LV datasheet. If a non-standard voltage is required, see LP2980-ADJ.

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

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

Grade Order Information Package

Marking

Supplied as:

LP2980

www.national.com3

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

LP2980

please contact the National Semiconductor SalesOffice/
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

(Survival) Short Circuit Protected

I

OUT

Input-Output Voltage (Survival),

(Note 5) −0.3V to +16V

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=V

Symbol Parameter Conditions Typ LP2980AI-XX LP2980I-XX Units

∆V

O

Output Voltage
Tolerance

Output Voltage V
Line Regulation ≤ V

V

IN–VO

Dropout Voltage IL=0 133mV
(Note 7) 55

I

GND

V

ON/OFF

Ground Pin Current IL= 0 65 95 95 µA

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

I

O(PK)

e

n

ON/OFF Input Current V

Peak Output Current V
Output Noise BW = 300 Hz–50 kHz, 160 µV
Voltage (RMS) C
Ripple Rejection f = 1 kHz

I

O(MAX)

Note 1: Absolute maximum ratings indicate limits beyond which damageto the component may occur. Electrical specifications do notapply when operating the de­vice outside of its rated operating conditions.

Note 2: The ESD rating of pins 3 and 4 is 1 kV.

Short Circuit Current RL= 0 (Steady State) 150 mA

+ 1V, IL= 1 mA, C

O(NOM)

OUT

= 1 µF, V

ON/OFF

= 2V.

(Note 6) (Note 6)

Min Max Min Max

IL= 1 mA −0.50 0.50 −1.0 1.0

1mA<I

<

50 mA −0.75 0.75 −1.5 1.5

L

−2.5 2.5 −3.5 3.5

+1V

O(NOM)

≤ 16V 0.032 0.032

IN

I

= 1 mA 7 10 10

L

0.007

0.014 0.014

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

<

ON/OFF

ON/OFF
ON/OFF
OUT

OUT

0.18V 0 11

=0 0 −1 −1 µA
=5V 5 15 15

≥ V

− 5% 150 100 100 mA

O(NOM)

=10µF

63 dB

C

=10µF

OUT

(Note 9)

%V

NOM

%/V

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Electrical Characteristics (Continued)

Note 3: The maximum allowablepower dissipationis 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 LP2980 output must be diode-clamped to ground.
Note 5: The output PNP structure contains a diode between the V

will turn on this diode (see Application Hints).
Note 6: Limits are 100%production testedat 25˚C. Limits over the operating temperature range are guaranteed throughcorrelation usingStatistical Quality Control

(SQC) methods. The limits are used to calculate National’sAverage 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.

. 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

, thejunction-to-ambient thermalresistance, θJA, and

J(MAX)

OUT

Basic Application Circuit

LP2980

DS012078-2

*

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 (seeApplication Hints).

***

Do not make connections to this pin.

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Typical Performance Characteristics Unless otherwise specified: T

C

= 2.2 µF, all voltage options, ON/OFF pin tied to VIN.

OUT

LP2980

= 25˚C, VIN=V

A

O(NOM)

+1V,

Output Voltage vs
Temperature

Output Voltage vs
Temperature

DS012078-9

Output Voltage vs
Temperature

DS012078-39

Dropout Characteristics

Dropout Characteristics

DS012078-40

DS012078-15

DS012078-16

Dropout Characteristics

DS012078-14

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