LP2980AIM5X-2.8 National Semiconductor, LP2980AIM5X-2.8 Datasheet

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LP2980AIM5X-2.8

Manufacturer Part Number
LP2980AIM5X-2.8
Description
Micropower 50 mA Ultra Low-Dropout Regulator
Manufacturer
National Semiconductor
Datasheet

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Part Number
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Quantity
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Part Number:
LP2980AIM5X-2.8
Manufacturer:
TI/NSC
Quantity:
24 000
Part Number:
LP2980AIM5X-2.8
Manufacturer:
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Quantity:
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© 2006 National Semiconductor Corporation
LP2980
Micropower 50 mA Ultra Low-Dropout Regulator In
SOT-23 and micro SMD Packages
General Description
The LP2980 is a 50 mA, fixed-output voltage regulator de-
signed 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 120 mV
@
Ground Pin Current. Typically 375 µA
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.
Minimum Part Count. Requires only 1 µF of external ca-
pacitance 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 prod-
ucts.
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
@
DS012078
50 mA load, and 80
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
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
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
01207801
September 2006
www.national.com

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LP2980AIM5X-2.8 Summary of contents

Page 1

... Block Diagram VIP ™ trademark of National Semiconductor Corporation. © 2006 National Semiconductor Corporation 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 µ ...

Page 2

... L0NB LP2980IM5-2.5 L0NB LP2980AIM5X-2.6 L48A LP2980AIM5-2.6 L48A LP2980IM5X-2.6 L48B LP2980IM5-2.6 L48B LP2980AIM5X-2.7 L26A LP2980AIM5-2.7 L26A LP2980IM5X-2.7 L26B LP2980IM5-2.7 L26B LP2980AIM5X-2.8 L13A LP2980AIM5-2.8 L13A LP2980IM5X-2.8 L13B LP2980IM5-2.8 L13B LP2980AIM5X-2.9 L12A LP2980AIM5-2.9 L12A LP2980IM5X-2.9 L12B 2 01207864 Top View See NS Package Number BPA05 Function ...

Page 3

... LP2980IM5X-3.5 L27B LP2980IM5-3.5 L27B LP2980AIM5X-3.6 L28A LP2980AIM5-3.6 L28A LP2980IM5X-3.6 L28B LP2980IM5-3.6 L28B LP2980AIM5X-3.8 L21A LP2980AIM5-3.8 L21A LP2980IM5X-3.8 L21B LP2980IM5-3.8 L21B LP2980AIM5X-4.0 L25A LP2980AIM5-4.0 L25A LP2980IM5X-4.0 L25B LP2980IM5-4.0 L25B LP2980AIM5X-4.5 L0XA LP2980AIM5-4.5 L0XA LP2980IM5X-4.5 L0XB LP2980IM5-4.5 L0XB LP2980AIM5X-4.7 L37A LP2980AIM5-4.7 L37A LP2980IM5X-4.7 L37B LP2980IM5-4 ...

Page 4

Ordering Information TABLE 1. Package Marking and Order Information (Continued) Output Voltage Grade (V) 3.3 A 3.3 STD 3.3 STD 5.0 A 5.0 A 5.0 STD 5.0 STD www.national.com (Continued) Order Information Package Marking LP2980AIBPX-3.3 LP2980IBP-3.3 LP2980IBPX-3.3 LP2980AIBP-5.0 LP2980AIBPX-5.0 LP2980IBP-5.0 ...

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 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 ...

Page 7

Typical Performance Characteristics C = 2.2 µF, all voltage options, ON/OFF pin tied to V OUT Output Voltage vs Temperature Output Voltage vs Temperature Dropout Characteristics Unless otherwise specified 01207809 Dropout Characteristics 01207840 Dropout Characteristics 01207815 7 ...

Page 8

Typical Performance Characteristics C = 2.2 µF, all voltage options, ON/OFF pin tied to V OUT Dropout Voltage vs Temperature Ground Pin Current vs Temperature Input Current vs V www.national.com Unless otherwise specified (Continued) IN 01207811 01207810 IN ...

Page 9

Typical Performance Characteristics C = 2.2 µF, all voltage options, ON/OFF pin tied to V OUT Line Transient Response Load Transient Response Load Transient Response Unless otherwise specified (Continued) IN Line Transient Response 01207821 Load Transient Response 01207841 ...

Page 10

Typical Performance Characteristics C = 2.2 µF, all voltage options, ON/OFF pin tied to V OUT Short Circuit Current Short Circuit Current Output Impedance vs Frequency www.national.com Unless otherwise specified (Continued) IN Instantaneous Short Circuit Current 01207832 Instantaneous ...

Page 11

Typical Performance Characteristics C = 2.2 µF, all voltage options, ON/OFF pin tied to V OUT Output Noise Density Input to Output Leakage vs Temperature Turn-On Waveform Unless otherwise specified (Continued) IN 01207827 Output Reverse Leakage vs 01207828 ...

Page 12

Typical Performance Characteristics C = 2.2 µF, all voltage options, ON/OFF pin tied to V OUT ON/OFF Pin Current vs V www.national.com Unless otherwise specified (Continued) IN ON/OFF 01207845 12 = 25˚ 1V, A ...

Page 13

Application Hints OUTPUT CAPACITOR Like any low-dropout regulator, the LP2980 requires an out- put capacitor to maintain regulator loop stability. This capaci- tor must be selected to meet the requirements of minimum capacitance and equivalent series resistance (ESR) range. It ...

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

Typical Applications The LP2980 can be used to control higher-current regulators, by adding an external PNP pass device. With the PNP transistors shown in , the output current can be as high as 400 mA, as long as the input ...

Page 16

Typical Applications With limited input voltage range, the LP2980 can control a 3.3V, 3A regulator with the use of a high current-gain external PNP pass transistorias shown the regulator loaded with the full 3A, ...

Page 17

Physical Dimensions inches (millimeters) unless otherwise noted For Order Numbers, refer to Table 1 in the “Order Information” section of this document. 5-Lead Small Outline Package (M5) NS Package Number MF05A 17 www.national.com ...

Page 18

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 19

... BANNED SUBSTANCE COMPLIANCE National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C2) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/quality/green. ...

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