LP2982IM5X-4.5 National Semiconductor, LP2982IM5X-4.5 Datasheet

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LP2982IM5X-4.5

Manufacturer Part Number
LP2982IM5X-4.5
Description
Micropower 50 mA Ultra Low-Dropout Regulator
Manufacturer
National Semiconductor
Datasheet

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Part Number:
LP2982IM5X-4.5
Manufacturer:
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Quantity:
12 000
© 2000 National Semiconductor Corporation
LP2982
Micropower 50 mA Ultra Low-Dropout Regulator
General Description
The LP2982 is a 50 mA, fixed-output voltage regulator de-
signed to provide ultra low dropout and lower noise in battery
powered applications.
Using an optimized VIP
cess, the LP2982 delivers unequaled performance in all
specifications critical to battery-powered designs:
Dropout Voltage: Typically 120 mV
@
Ground Pin Current: Typically 375 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 absolute minimum board space.
Precision Output: 1.0% tolerance output voltages available
(A grade).
Low Noise: By adding an external bypass capacitor, output
noise can be reduced to 30 µV (typical).
Ten output voltage versions, from 2.5V to 5.0V, are available
as standard products.
Block Diagram
VIP
1 mA load.
is a trademark of National Semiconductor Corporation.
@
1 mA load.
(Vertically Integrated PNP) pro-
@
50 mA load, and 7 mV
DS012679
@
50 mA load, and
Features
n Ultra low dropout voltage
n Guaranteed 50 mA output current
n Typical dropout voltage 180 mV
n Smallest possible size (SOT-23, micro SMD package)
n Requires minimum external components
n
n Low ground pin current at all loads
n Output voltage accuracy 1.0% (A Grade)
n High peak current capability (150 mA typical)
n Wide supply voltage range (16V max)
n Low Z
n Overtemperature/overcurrent protection
n −40˚C to +125˚C junction temperature range
n Custom voltages available
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
0.3
typical (10 Hz to 1 MHz)
DS012679-1
@
80 mA
www.national.com
March 2000

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LP2982IM5X-4.5 Summary of contents

Page 1

... Ten output voltage versions, from 2.5V to 5.0V, are available as standard products. Block Diagram VIP ™ trademark of National Semiconductor Corporation. © 2000 National Semiconductor Corporation Features n Ultra low dropout voltage n Guaranteed 50 mA output current n Typical dropout voltage 180 mV ...

Page 2

Connection Diagrams 5-Lead Small Outline Package (M5) DS012679-3 Top View See NS Package Number MF05A For ordering information see Table 1 Basic Application Circuit * ON/OFF input must be actively terminated. Tie Minimum capacitance is shown to ...

Page 3

... LP2982AIM5X-3.8 L76A LP2982AIM5-3.8 L76A LP2982IM5X-3.8 L76B LP2982IM5-3.8 L76B LP2982AIM5X-4.0 L29A LP2982AIM5-4.0 L29A LP2982IM5X-4.0 L29B LP2982IM5-4.0 L29B LP2982AIM5X-4.5 LA8A LP2982AIM5-4.5 LA8A LP2982IM5X-4.5 LA8B LP2982IM5-4.5 LA8B LP2982AIM5X-4.7 L0HA LP2982AIM5-4.7 L0HA LP2982IM5X-4.7 L0HB LP2982IM5-4.7 L0HB LP2982AIM5X-5.0 L18A LP2982AIM5-5.0 L18A LP2982IM5X-5.0 L18B LP2982IM5-5.0 L18B LP2982AIM5X-5.3 ...

Page 4

... STD 3.0 A 3.0 A 3.0 STD 3.0 STD www.national.com (Continued) Package Order Information Marking LP2982AIM5-5.3 LBZA LP2982IM5X-5.3 LBZB LP2982IM5-5.3 LBZB LP2982AIBP-2.8 LP2982AIBPX-2.8 LP2982IBP-2.8 LP2982IBPX-2.8 LP2982AIBP-3.0 LP2982AIBPX-3.0 LP2982IBP-3.0 LP2982IBPX-3.0 4 Supplied as: 1000 Units on Tape and Reel 3000 Units on Tape and Reel 1000 Units on Tape and Reel ...

Page 5

... 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) Electrical Characteristics Limits in standard typeface are for T ...

Page 6

Electrical Characteristics Limits in standard typeface are for T less otherwise specified O(NOM) Symbol Parameter Ripple Rejection I Short Circuit Current O(MAX) Note 1: Absolute maximum ratings indicate limits beyond which damage to the component may ...

Page 7

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

Page 8

Typical Performance Characteristics C = 4.7 µ µF, all voltage options, ON/OFF pin tied to V OUT IN Ground Pin Current vs Temperature Input Current Line Transient Response www.national.com Unless otherwise specified ...

Page 9

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

Page 10

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

Page 11

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

Page 12

Typical Performance Characteristics C = 4.7 µ µF, all voltage options, ON/OFF pin tied to V OUT IN Turn-ON Waveform Turn-ON Waveform www.national.com Unless otherwise specified (Continued) IN Turn-ON Waveform DS012679-50 DS012679- 25˚C, ...

Page 13

Application Hints EXTERNAL CAPACITORS Like any low-dropout regulator, the external capacitors used with the LP2982 must be carefully selected to assure regula- tor loop stability. INPUT CAPACITOR: An input capacitor whose value is 1 µF is required with the LP2982 ...

Page 14

... 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 15

Physical Dimensions inches (millimeters) unless otherwise noted For Order Numbers, refer to Table 1 in the “Ordering Information” section of this document. 5-Lead Small Outline Package (M5) NS Package Number MF05A 15 www.national.com ...

Page 16

Physical Dimensions 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. REMAINING PINS ARE NUMBERED COUNTER CLOCKWISE. ...

Page 17

... 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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