LP2989AIMM-3.3 National Semiconductor, LP2989AIMM-3.3 Datasheet

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LP2989AIMM-3.3

Manufacturer Part Number
LP2989AIMM-3.3
Description
LP2989 Micropower/Low Noise, 500 mA Ultra Low-Dropout Regulator For Use with Ceramic Output Capacitors; Package: MINI SOIC; No of Pins: 8
Manufacturer
National Semiconductor
Datasheet

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© 2002 National Semiconductor Corporation
LP2989
Micropower/Low Noise, 500 mA Ultra Low-Dropout
Regulator
For Use with Ceramic Output Capacitors
General Description
The LP2989 is a fixed-output 500 mA precision LDO regu-
lator designed for use with ceramic output capacitors.
Output noise can be reduced to 18µV (typical) by connecting
an external 10 nF capacitor to the bypass pin.
Using an optimized VIP
cess, the LP2989 delivers superior performance:
Dropout Voltage: Typically 310 mV
mV
Ground Pin Current: Typically 3 mA
110 µA
Sleep Mode: The LP2989 draws less than 0.8 µA quiescent
current when shutdown pin is pulled low.
Error Flag: The built-in error flag goes low when the output
drops approximately 5% below nominal.
Precision Output: Guaranteed output voltage accuracy is
0.75% (“A” grade) and 1.25% (standard grade) at room
temperature.
For output voltages
Block Diagram
VIP
@
is a trademark of National Semiconductor Corporation.
100 µA load.
@
100 µA load.
<
2V, see LP2989LV datasheet.
(Vertically Integrated PNP) pro-
@
@
500 mA load, and 1
DS101339
500 mA load, and
Features
n Ultra low dropout voltage
n Guaranteed 500 mA continuous output current
n Very low output noise with external capacitor
n SO-8, Mini SO-8, 8 Lead LLP surface mount packages
n
n Low ground pin current at all loads
n 0.75% output voltage accuracy (“A” grade)
n High peak current capability (800 mA typical)
n Wide supply voltage range (16V max)
n Overtemperature/overcurrent protection
n −40˚C to +125˚C junction temperature range
Applications
n Notebook/Desktop PC
n PDA/Palmtop Computer
n Wireless Communication Terminals
n SMPS Post-Regulator
<
0.8 µA quiescent current when shutdown
10133901
www.national.com
June 2002

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LP2989AIMM-3.3 Summary of contents

Page 1

... For output voltages 2V, see LP2989LV datasheet. Block Diagram VIP ™ trademark of National Semiconductor Corporation. © 2002 National Semiconductor Corporation Features n Ultra low dropout voltage n Guaranteed 500 mA continuous output current n Very low output noise with external capacitor n SO-8, Mini SO-8, 8 Lead LLP surface mount packages < ...

Page 2

Connection Diagrams Surface Mount Packages: SO-8/Mini SO-8 Package See NS Package Drawing Numbers M08A/MUA08A Basic Application Circuit * Capacitance values shown are minimum required to assure stability, but may be increased without limit. Larger output capacitor provides improved dynamic response. ...

Page 3

... LA6B LP2989IMMX-2.8 LA6B LP2989AIMM-3.0 LA1A LP2989AIMMX-3.0 LA1A LP2989IMM-3.0 LA1B LP2989IMMX-3.0 LA1B LP2989AIMM-3.3 LA2A LP2989AIMMX-3.3 LA2A 3 Supplied as: 1000 Units on Tape and Reel 4500 Units on Tape and Reel 1000 Units on Tape and Reel 4500 Units on Tape and Reel 1000 Units on Tape and Reel ...

Page 4

... A 5.0 A 5.0 STD 5.0 STD www.national.com (Continued) Order Information Package Marking LP2989IMM-3.3 LP2989IMMX-3.3 LP2989AIMM-5.0 LP2989AIMMX-5.0 LP2989IMM-5.0 LP2989IMMX-5.0 4 Supplied as: LA2B 1000 Units on Tape and Reel LA2B 3500 Units on Tape and Reel LA4A 1000 Units on Tape and Reel LA4A 3500 Units on Tape and Reel LA4B ...

Page 5

Ordering Information TABLE 1. Package Marking and Ordering Information (Continued) Output Voltage Grade SO-8 (M) 2.5 A 2.5 A 2.5 STD 2.5 STD 3.3 A 3.3 A 3.3 STD 3.3 STD 5.0 A 5.0 A 5.0 STD 5.0 STD < ...

Page 6

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Range Operating Junction Temperature Range Lead Temperature (Soldering, 5 seconds) ESD Rating (Note 2) Power Dissipation (Note 3) Electrical Characteristics Limits in standard typeface are for T ...

Page 7

Electrical Characteristics Limits in standard typeface are for T J less otherwise specified (NOM Symbol Parameter Ripple Rejection Output Voltage Temperature Coefficient SHUTDOWN INPUT V S/D Input Voltage S/D I S/D Input ...

Page 8

Typical Performance Characteristics C = 2.2 µF, S/D is tied Dropout Characteristics Dropout Voltage vs Load Current Ground Pin Current vs Load Current www.national.com Unless otherwise specified (NOM) + 1V, ...

Page 9

Typical Performance Characteristics C = 2.2 µF, S/D is tied Input Current vs V Line Transient Response Line Transient Response Unless otherwise specified: T (NOM mA, ...

Page 10

Typical Performance Characteristics C = 2.2 µF, S/D is tied Load Transient Response Short Circuit Current Short Circuit Current www.national.com Unless otherwise specified (NOM mA, ...

Page 11

Typical Performance Characteristics C = 2.2 µF, S/D is tied Ripple Rejection Ripple Rejection Ripple Rejection Unless otherwise specified: T (NOM 2.5V. (Continued) ...

Page 12

Typical Performance Characteristics C = 2.2 µF, S/D is tied Ripple Rejection Ripple Rejection vs Load Output Noise Density www.national.com Unless otherwise specified (NOM mA, ...

Page 13

Typical Performance Characteristics C = 2.2 µF, S/D is tied Turn-ON Waveform Turn-ON Waveform I vs Shutdown GND Unless otherwise specified: T (NOM ...

Page 14

Typical Performance Characteristics C = 2.2 µF, S/D is tied Shutdown GND Typical Temperature vs V OUT www.national.com Unless otherwise specified (NOM mA, ...

Page 15

Application Hints LLP Package Devices The LP2989 is offered in the 8 lead LLP surface mount package to allow for increased power dissipation compared to the SO-8 and Mini SO-8. For details on thermal perfor- mance as well as mounting ...

Page 16

Application Hints (Continued) at high ambient temperatures (which could cause the LP2989 to oscillate). Another significant problem with Z5U and Y5V dielectric devices is that the capacitance drops severely with applied voltage. A typical Z5U or Y5V capacitor can lose ...

Page 17

Physical Dimensions inches (millimeters) unless otherwise noted SO-8 Package NS Package Number M08A 17 www.national.com ...

Page 18

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted (Continued) Mini SO-8 Package NS Package Number MUA08A 18 ...

Page 19

... 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 ...

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