LP2981AIM5X-3.2 National Semiconductor, LP2981AIM5X-3.2 Datasheet

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LP2981AIM5X-3.2

Manufacturer Part Number
LP2981AIM5X-3.2
Description
Micropower 100 mA Ultra Low-Dropout Regulator
Manufacturer
National Semiconductor
Datasheet

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© 2006 National Semiconductor Corporation
LP2981
Micropower 100 mA Ultra Low-Dropout Regulator in
SOT-23 and micro SMD Packages
General Description
The LP2981 is a 100 mA, fixed-output voltage regulator
designed specifically to meet the requirements of battery-
powered applications.
Using an optimized VIP
cess, the LP2981 delivers unequaled performance in all
specifications critical to battery-powered designs:
Dropout Voltage. Typically 200 mV
7 mV
Ground Pin Current. Typically 600 µA
80 µA
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.
Precision Output. 0.75% tolerance output voltages avail-
able (A grade).
Eleven voltage options, from 2.5V to 5.0V, are available as
standard products.
Block Diagram
VIP
is a trademark of National Semiconductor Corporation.
@
@
1 mA load.
1 mA load.
(Vertically Integrated PNP) pro-
@
@
DS012506
100 mA load, and
100 mA load, and
Features
n Ultra low dropout voltage
n Output voltage accuracy 0.75% (A Grade)
n Guaranteed 100 mA output current
n Smallest possible size (SOT-23, micro SMD package)
n
n Low ground pin current at all load currents
n High peak current capability (300 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
Applications
n Cellular Phone
n Palmtop/Laptop Computer
n Personal Digital Assistant (PDA)
n Camcorder, Personal Stereo, Camera
<
1 µA quiescent current when shutdown
OUT
over wide frequency range
01250601
February 2006
www.national.com

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LP2981AIM5X-3.2 Summary of contents

Page 1

... Eleven voltage options, from 2.5V to 5.0V, are available as standard products. Block Diagram VIP ™ trademark of National Semiconductor Corporation. © 2006 National Semiconductor Corporation Features n Ultra low dropout voltage n Output voltage accuracy 0.75% (A Grade) n Guaranteed 100 mA output current n Smallest possible size (SOT-23, micro SMD package) < ...

Page 2

... L77A LP2981AIM5-2.8 L77A LP2981IM5X-2.8 L77B LP2981IM5-2.8 L77B LP2981AIM5X-2.9 L0VA LP2981AIM5-2.9 L0VA LP2981IM5X-2.9 L0VB LP2981IM5-2.9 L0VB LP2981AIM5X-3.0 L05A LP2981AIM5-3.0 L05A LP2981IM5X-3.0 L05B LP2981IM5-3.0 L05B 2 01250650 Top View See NS Package Number BPA05 Function Supplied as: 3000 Units on Tape and Reel 1000 Units on Tape and Reel ...

Page 3

... STD 3.3 A 3.3 A 3.3 STD 3.3 STD (Continued) Order Information Package Marking LP2981AIM5X-3.1 L38A LP2981AIM5-3.1 L38A LP2981IM5X-3.1 L38B LP2981IM5-3.1 L38B LP2981AIM5X-3.2 L35A LP2981AIM5-3.2 L35A LP2981IM5X-3.2 L35B LP2981IM5-3.2 L35B LP2981AIM5X-3.3 L04A LP2981AIM5-3.3 L04A LP2981IM5X-3.3 L04B LP2981IM5-3.3 L04B LP2981AIM5X-3.6 L0JA LP2981AIM5-3.6 L0JA LP2981IM5X-3.6 L0JB LP2981IM5-3 ...

Page 4

... 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 sec.) ESD Rating (Note 2) Power Dissipation (Note 3) Electrical Characteristics Limits in standard typeface are for T ...

Page 5

Electrical Characteristics Limits in standard typeface are for T = 25˚C, and limits in boldface type applyover the full operating temperature range. Un- J less otherwise specified O(NOM) Symbol Parameter Note 1: Absolute maximum ratings indicate ...

Page 6

Typical Performance Characteristics C = 4.7 µ µF all voltage options, ON/OFF pin tied to V OUT IN Output Voltage vs Temperature Output Voltage vs Temperature Dropout Characteristics www.national.com Unless otherwise specified 01250606 Dropout ...

Page 7

Typical Performance Characteristics C = 4.7 µ µF all voltage options, ON/OFF pin tied to V OUT IN Dropout Voltage vs Temperature Ground Pin Current vs Temperature Input Current vs V Unless otherwise specified (Continued) ...

Page 8

Typical Performance Characteristics C = 4.7 µ µF all voltage options, ON/OFF pin tied to V OUT IN Line Transient Response Load Transient Response Load Transient Response www.national.com Unless otherwise specified (Continued) IN Line Transient ...

Page 9

Typical Performance Characteristics C = 4.7 µ µF all voltage options, ON/OFF pin tied to V OUT IN Short Circuit Current Short Circuit Current Output Impedance vs Frequency Unless otherwise specified (Continued) IN Instantaneous Short ...

Page 10

Typical Performance Characteristics C = 4.7 µ µF all voltage options, ON/OFF pin tied to V OUT IN Output Noise Density Input to Output Leakage vs Temperature Turn-On Waveform www.national.com Unless otherwise specified (Continued) IN ...

Page 11

Typical Performance Characteristics C = 4.7 µ µF all voltage options, ON/OFF pin tied to V OUT IN ON/OFF Pin Current vs V ON/OFF Unless otherwise specified (Continued) IN 01250636 11 = 25˚ ...

Page 12

Application Hints EXTERNAL CAPACITORS Like any low-dropout regulator, the external capacitors used with the LP2981 must be carefully selected to assure regu- lator loop stability. Input Capacitor: An input capacitor whose value is ≥ 1 µF is required with the ...

Page 13

... ON/OFF input. MICRO SMD MOUNTING The micro SMD package requires specific mounting tech- niques which are detailed in National Semiconductor Appli- cation Note # 1112. Referring to the section Surface Mount Technology (SMT) Assembly Considerations, 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 ...

Page 14

Physical Dimensions For Order Numbers, refer to Table 1 in the “Ordering Information” section of this document. www.national.com inches (millimeters) unless otherwise noted 5-Lead Small Outline Package (M5) NS Package Number MF05A 14 ...

Page 15

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

Page 16

... BANNED SUBSTANCE COMPLIANCE National Semiconductor manufactures products and uses packing materials that meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...

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