LP2985IM5-1.8/NOPB National Semiconductor, LP2985IM5-1.8/NOPB Datasheet

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LP2985IM5-1.8/NOPB

Manufacturer Part Number
LP2985IM5-1.8/NOPB
Description
IC REG LDO 150MA 1.8V LN SOT23-5
Manufacturer
National Semiconductor
Datasheet

Specifications of LP2985IM5-1.8/NOPB

Regulator Topology
Positive Fixed
Voltage - Output
1.8V
Voltage - Input
2.5 ~ 16 V
Voltage - Dropout (typical)
0.28V @ 150mA
Number Of Regulators
1
Current - Output
150mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SOT-23-5, SC-74A, SOT-25
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Other names
LP2985IM5-1.8
LP2985IM5-1.8TR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LP2985IM5-1.8/NOPB
Manufacturer:
TI/德州仪器
Quantity:
20 000
© 2010 National Semiconductor Corporation
Micropower 150 mA Low-Noise Low-Dropout Regulator in
SOT-23 and micro SMD packages for Applications with
Output Voltages
Designed for Use with Very Low ESR Output Capacitors
General Description
The LP2985LV is a 150 mA, fixed-output voltage regulator
designed to providehigh performance and low noise in appli-
cations requiring output voltages
Using an optimized VIP
the LP2985LV delivers unequalled performance in all speci-
fications critical to battery-powered designs:
Ground Pin Current: Typically 825 µA @ 150 mA load, and
75 µA @ 1 mA load.
Enhanced Stability: The LP2985LV 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: micro SMD package uses 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).
Block Diagram
VIP
®
is a registered trademark of National Semiconductor Corporation.
®
(Vertically Integrated PNP) process,
2.0V.
2.0V
101295
LP2985LV
Features
Applications
Guaranteed 150 mA output current
Smallest possible size (micro SMD)
Requires minimum external components
Stable with low-ESR output capacitor
<1 µA quiescent current when shut down
Low ground pin current at all loads
Output voltage accuracy 1% (A Grade)
High peak current capability
Wide supply voltage range (16V max)
Low Z
Overtemperature/overcurrent protection
−40°C to +125°C junction temperature range
Custom voltages available
Cellular Phone
Palmtop/Laptop Computer
Personal Digital Assistant (PDA)
Camcorder, Personal Stereo, Camera
OUT
: 0.3Ω typical (10 Hz to 1 MHz)
10129501
September 9, 2010
www.national.com

Related parts for LP2985IM5-1.8/NOPB

LP2985IM5-1.8/NOPB Summary of contents

Page 1

... Precision Output: 1% tolerance output voltages available (A grade). Low Noise: By adding bypass capacitor, output noise can be reduced to 30 µV (typical). Block Diagram VIP ® registered trademark of National Semiconductor Corporation. © 2010 National Semiconductor Corporation LP2985LV 2.0V ≤ Features ■ Guaranteed 150 mA output current ■ ...

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 ...

Page 3

... LP2985IM5-1.5 LCHB LP2985IM5X-1.5 LCHB LP2985AIM5-1.8 LAYA LP2985AIM5X-1.8 LAYA LP2985IM5-1.8 LAYB LP2985IM5X-1.8 LAYB LP2985AIM5-2.0 LCDA LP2985AIM5X-2.0 LCDA LP2985IM5-2.0 LCDB LP2985IM5X-2.0 LCDB LP2985AITP-1.5 LP2985AITPX-1.5 LP2985ITP-1.5 LP2985ITPX-1.5 LP2985AITP-1.8 LP2985AITPX-1.8 LP2985ITP-1.8 LP2985ITPX-1.8 3 Supplied as: 1000 Units on Tape and Reel 3000 Units on Tape and Reel 1000 Units on Tape and Reel ...

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

Page 5

Symbol Parameter Ripple Rejection I (SC) Short Circuit Current O I (PK) Peak Output Current O Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the device ...

Page 6

Typical Performance Characteristics (NOM) + 1.8V OUT OUT V vs Temperature OUT Short-Circuit Current Ripple Rejection COUT = 4.7µF, Bypass = 10nF www.national.com Unless otherwise specified 25°C, ON/OFF pin is tied ...

Page 7

Output Impedance vs Frequency 10129527 Noise Density 10129533 Ground Pin vs Load Current 10129513 Output Impedance vs Frequency Noise Density Minimum Input Voltage vs Temperature 7 10129532 10129537 10129509 www.national.com ...

Page 8

Minimum Input Voltage vs Temperature Input Current vs V Ground Pin Current vs Temperature www.national.com 10129541 IN 10129511 Instantaneous Short Circuit Current 10129514 8 Input Current 10129510 Input Current 10129512 10129515 ...

Page 9

Output Characteristics 10129508 Load Transient 10129543 Line Transient 10129545 Load Transient Load Transient Line Transient 9 10129542 10129544 10129546 www.national.com ...

Page 10

Line Transient Turn-On Time Turn-On Time www.national.com Line Transient 10129547 Turn-On Time 10129549 Turn-On Time 10129550 10 10129548 10129552 10129551 ...

Page 11

Application Hints EXTERNAL CAPACITORS Like any low-dropout regulator, the LP2985LV requires ex- ternal capacitors for regulator stability. These capacitors must be correctly selected for good performance. Input Capacitor An input capacitor whose capacitance is between the LP2985LV input and ground ...

Page 12

... ON/OFF 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 13

Physical Dimensions inches (millimeters) unless otherwise noted SOT-23, 5-Lead Small Outline Package (M5) NS Package Number MF05A 13 www.national.com ...

Page 14

NOTES: UNLESS OTHERWISE SPECIFIED 1. EPOXY COATING 2. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD. 3. PIN 1 IS ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION. REMAINING PINS ARE NUMBERED COUNTER CLOCK- WISE. 4. XXX IN DRAWING NUMBER ...

Page 15

Notes 15 www.national.com ...

Page 16

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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