NSC LP2980AIM5X-1.8, LP2980IM5X-1.8, LP2980AIM5-1.8, LP2980IM5-1.8 Datasheet

LP2980LV
Micropower SOT, 50 mA Low-Voltage Low-Dropout

April 2000

LP2980LV Micropower SOT, 50 mA Low-Voltage Low-Dropout Regulator For Applications With

Output Voltages

Regulator For Applications With Output Voltages

General Description

The LP2980LVisa50mA,fixed-outputvoltageregulatorde­signed for high performance in applications requiring output
voltages below 2V.

Using an optimized VIP
cess, the LP2980LV delivers unequalled performance in all
specifications critical to battery-powered designs:

Low Ground Pin Current. Typically 280 µA
and 75 µA

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

Smallest Possible Size. SOT-23 package uses absolute
minimum board space.

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

@

1 mA load.

™

(Vertically Integrated PNP) pro-

@

50 mA load,

Block Diagram

Features

n Guaranteed 50 mA output current
n Smallest possible size (SOT-23 Package)
n Requires few external components

<

n

1 µA quiescent current when shutdown

n Low ground pin current at all load currents
n Output voltage accuracy 0.5% (A Grade)
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

0.1Ω typical (10 Hz to 1 MHz)

OUT

Applications

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

<

2V

<

2V

DS101091-1

VIP™is a trademark of National Semiconductor Corporation.

© 2000 National Semiconductor Corporation DS101091 www.national.com

Connection Diagram

LP2980LV

Ordering Information

Output

Voltage (V)

1.5V A LP2980AIM5X-1.5 LANA 3k Units on Tape and Reel

1.5V A LP2980AIM5-1.5 LANA 250 Units on Tape and Reel

1.5V STD LP2980IM5X-1.5 LANB 3k Units on Tape and Reel

1.5V STD LP2980IM5-1.5 LANB 250 Units on Tape and Reel

1.8V A LP2980AIM5X-1.8 LAGA 3k Units on Tape and Reel

1.8V A LP2980AIM5-1.8 LAGA 250 Units on Tape and Reel

1.8V STD LP2980IM5X-1.8 LAGB 3k Units on Tape and Reel

1.8V STD LP2980IM5-1.8 LAGB 250 Units on Tape and Reel

For output voltages

>

5-lead Small Outline Package (M5)

DS101091-2

Top View

For Ordering Information See

See NS Package Number MA05B

TABLE 1. Package Marking and Ordering Information

Grade Order Information Package

2V, refer to LP2980 datasheet. If a non-standard voltage is required, see LP2980-ADJ.

Table 1

Supplied as:

Marking

Basic Application Circuit

DS101091-3

www.national.com 2

LP2980LV

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
ON/OFF 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 LP2980LVAI-XX

O

Output Voltage
Tolerance

∆V

Output Voltage Line
Regulation

I

GND

V

(min) Minimum input voltage

IN

Ground Pin Current

required to maintain
output regulation

V

ON/OFF

ON/OFF Input Voltage
(Note 7)

I

ON/OFF

I

O(PK)

e

n

ON/OFF Input Current V

Peak Output Current V
Output Noise Voltage

(RMS)
Ripple Rejection f = 1kHz C

+ 1V, IL= 1 mA, CIN= 1 µF, C

O(NOM)

= 4.7 µF, V

OUT

ON/OFF

= 2V.

(Note 6)

Min Max Min Max

= 1 mA −0.50 0.50 −1.00 1.00

I

L

1mA<I

V

O(NOM)

16V

=0

I

L

=1mA

I

L

I

=10mA

L

I

=50mA

L

V

ON/OFF

=50mA

I

L

<

50 mA −0.75

L

−2.50

+1V≤VIN≤

0.007

65

75

120

280

<

0.18V 0 11

0.75

2.50

0.014

0.032

85

110

95

160

175

325

475

850

2.05 2.20 2.20 V

High = O/P ON 1.4 1.6 1.6
Low = O/P OFF 0.55 0.18 0.18

=0 0 −1 −1

ON/OFF

V

BW = 300 Hz to 50 kHz,
C

=5V 5 15 15

ON/OFF
OUT

OUT

≥ V

=10µF

− 5% 150 100 100 mA

O(NOM)

125 µV

=10µF

OUT

63 dB

LP2980LVI-XX

(Note 6)

−1.50

−3.50

1.50

−3.50

0.014

0.032

85

110

95

160

175

325

475

850

Units

%V

%/V

µA

V

µA

NOM

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. 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 LP2980LV output must be diode-clamped to ground.

Short Circuit Current RL= 0 (Steady State)

(Note 8)

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

A

150 mA

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

J(MAX)

www.national.com3

Electrical Characteristics (Continued)

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

will turn on this diode and possibly damage the device (see Application Hints).

LP2980LV

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

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

OUT

OUT

Typical Performance Characteristics Unless otherwise specified: T

C

= 1µF, ON/OFF pin tied to VIN,VIN=V

IN

V

vs

OUT

Temperature

Min Input Voltage vs Temperature

O(NOM)

DS101091-5

+1V,V

OUT(NOM)

= 1.8V.

Output Characteristics

Ground Pin Current vs Temperature

= 25˚C, C

A

OUT

DS101091-7

= 4.7 µF,

DS101091-8

www.national.com 4

DS101091-22