LP2985AIM5-3.3 National Semiconductor, LP2985AIM5-3.3 Datasheet

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LP2985AIM5-3.3

Manufacturer Part Number
LP2985AIM5-3.3
Description
V REG LDO +3.3V, SMD, 2985, SOT235
Manufacturer
National Semiconductor
Datasheet

Specifications of LP2985AIM5-3.3

Primary Input Voltage
4.3V
Output Voltage
3.3V
Dropout Voltage Vdo
280mV
No. Of Pins
5
Output Current
150mA
Voltage Regulator Case Style
SOT-23
Operating Temperature Range
-40°C To +125°C
Output Voltage Fixed
3.3V
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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© 2005 National Semiconductor Corporation
LP2985
Micropower 150 mA Low-Noise Ultra Low-Dropout
Regulator in SOT-23 and micro SMD Packages
Designed for Use with Very Low ESR Output Capacitors
General Description
The LP2985 is a 150 mA, fixed-output voltage regulator
designed to provide ultra low-dropout and low noise in bat-
tery powered applications.
Using an optimized VIP
cess, the LP2985 delivers unequalled performance in all
specifications critical to battery-powered designs:
Dropout Voltage: Typically 300 mV
7 mV
Ground Pin Current: Typically 850 µA
75 µA
Enhanced Stability: The LP2985 is stable with output ca-
pacitor ESR as low as 5 mΩ, which allows the use of ceramic
capacitors on the output.
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% tolerance output voltages available
(A grade).
Low Noise: By adding a 10 nF bypass capacitor, output
noise can be reduced to 30 µV (typical).
Multiple voltage options, from 2.5V to 5.0V, are available as
standard products. Consult factory for custom voltages.
Block Diagram
VIP
is a trademark of National Semiconductor Corporation.
@
@
1 mA load.
1 mA load.
(Vertically Integrated PNP) pro-
@
@
DS100140
150 mA load, and
150 mA load, and
Features
n Ultra low dropout voltage
n Guaranteed 150 mA output current
n Smallest possible size (SOT-23, micro SMD package)
n Requires minimum external components
n Stable with low-ESR output capacitor
n
n Low ground pin current at all loads
n Output voltage accuracy 1% (A Grade)
n High peak current capability
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 shut down
OUT
: 0.3Ω typical (10 Hz to 1 MHz)
10014001
www.national.com
June 2005

Related parts for LP2985AIM5-3.3

LP2985AIM5-3.3 Summary of contents

Page 1

... Multiple voltage options, from 2.5V to 5.0V, are available as standard products. Consult factory for custom voltages. Block Diagram VIP ™ trademark of National Semiconductor Corporation. © 2005 National Semiconductor Corporation Features n Ultra low dropout voltage n Guaranteed 150 mA output current n Smallest possible size (SOT-23, micro SMD package) ...

Page 2

Basic Application Circuit *ON/OFF input must be actively terminated. Tie to V **Minimum capacitance is shown to ensure stability (may be increased without limit). Ceramic capacitor required for output (see Application Hints). ***Reduces output noise (may be omitted if application ...

Page 3

... LP2985IM5-3.0 L0OB LP2985AIM5X-3.1 L0PA LP2985AIM5-3.1 L0PA LP2985IM5X-3.1 L0PB LP2985IM5-3.1 L0PB LP2985AIM5X-3.2 L0QA LP2985AIM5-3.2 L0QA LP2985IM5X-3.2 L0QB LP2985IM5-3.2 L0QB LP2985AIM5X-3.3 L0RA LP2985AIM5-3.3 L0RA LP2985IM5X-3.3 L0RB LP2985IM5-3.3 L0RB LP2985AIM5X-3.5 LAIA LP2985AIM5-3.5 LAIA LP2985IM5X-3.5 LAIB LP2985IM5-3.5 LAIB LP2985AIM5X-3.6 L0SA LP2985AIM5-3.6 L0SA LP2985IM5X-3.6 L0SB LP2985IM5-3.6 L0SB LP2985AIM5X-3 ...

Page 4

... LP2985IM5-4.7 LAJB LP2985AIM5X-4.8 LAKA LP2985AIM5-4.8 LAKA LP2985IM5X-4.8 LAKB LP2985IM5-4.8 LAKB LP2985AIM5X-5.0 L0UA LP2985AIM5-5.0 L0UA LP2985IM5X-5.0 L0UB LP2985IM5-5.0 L0UB LP2985AIM5X-5.3 LFYA LP2985AIM5-5.3 LFYA LP2985IM5X-5.3 LFYB LP2985IM5-5.3 LFYB LP2985AIM5X-6.1 LF6A LP2985AIM5-6.1 LF6A LP2985IM5X-6.1 LF6B LP2985IM5-6.1 LF6B LP2985AIM5X-12 LH1A LP2985AIM5-12 LH1A LP2985IM5X-12 LH1B LP2985IM5-12 LH1B LP2985AIBP-2 ...

Page 5

Ordering Information TABLE 1. Package Marking and Ordering Information (Continued) Output Voltage (V) Grade 2.6 A 2.6 A 2.6 STD 2.6 STD 2.8 A 2.8 A 2.8 STD 2.8 STD 2.9 A 2.9 A 2.9 STD 2.9 STD 3.0 A ...

Page 6

Ordering Information TABLE 1. Package Marking and Ordering Information (Continued) Output Voltage (V) Grade 2.8 STD 2.8 STD 2.9 A 2.9 A 2.9 STD 2.9 STD 3.3 A 3.3 A 3.3 STD 3.3 STD 5.0 A 5.0 A 5.0 STD ...

Page 7

... 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 Temp. (Soldering, 5 sec.) ESD Rating (Note 2) Power Dissipation (Note 3) Electrical Characteristics Limits in standard typeface are for T ...

Page 8

Electrical Characteristics Limits in standard typeface are for T less otherwise specified (NOM Symbol Parameter e Output Noise n Voltage (RMS) Ripple Rejection I (SC) Short Circuit Current O I (PK) Peak ...

Page 9

Typical Performance Characteristics V (NOM) + 25˚C, ON/OFF pin is tied to V OUT Temperature OUT Short-Circuit Current Ripple Rejection Unless otherwise specified 10014008 Short Circuit Current vs Output Voltage 10014010 10014013 ...

Page 10

Typical Performance Characteristics V (NOM) + 25˚C, ON/OFF pin is tied to V OUT A Ripple Rejection Ripple Rejection Ripple Rejection www.national.com Unless otherwise specified (Continued) IN 10014015 10014017 10014019 10 = 1µ 4.7µF, ...

Page 11

Typical Performance Characteristics V (NOM) + 25˚C, ON/OFF pin is tied to V OUT A Ripple Rejection Output Impedance vs Frequency Output Noise Density Unless otherwise specified (Continued) IN Output Impedance vs Frequency 10014022 10014021 Ground ...

Page 12

Typical Performance Characteristics V (NOM) + 25˚C, ON/OFF pin is tied to V OUT A Dropout Voltage vs Temperature GND Pin Current vs Temperature Load Transient Response www.national.com Unless otherwise specified (Continued) IN 10014027 Instantaneous Short ...

Page 13

Typical Performance Characteristics V (NOM) + 25˚C, ON/OFF pin is tied to V OUT A Load Transient Response Line Transient Response Line Transient Response Unless otherwise specified (Continued) IN Line Transient Response 10014034 Line Transient Response ...

Page 14

Typical Performance Characteristics V (NOM) + 25˚C, ON/OFF pin is tied to V OUT A Turn-On Time Turn-On Time www.national.com Unless otherwise specified (Continued) IN 10014040 10014042 14 = 1µ 4.7µ ...

Page 15

Application Hints EXTERNAL CAPACITORS Like any low-dropout regulator, the LP2985 requires external capacitors for regulator stability. These capacitors must be correctly selected for good performance. Input Capacitor An input capacitor whose capacitance is ≥ 1 µF is required between the ...

Page 16

... MICRO SMD MOUNTING IN 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 prevent noted that the pad style which must be used with the 5-pin ON/OFF package is the NSMD (non-solder mask defined) type ...

Page 17

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 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

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 20

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 21

... 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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