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1 Features
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2 Applications
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3 Description
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Table of Contents
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4 Revision History
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5 Pin Configuration and Function
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6 Specifications
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6.1 Absolute Maximum Ratings
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6.2 ESD Ratings
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6.3 Recommended Operating Conditions
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6.4 Thermal Information
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6.5 Electrical Characteristics
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6.6 Typical Characteristics
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7 Detailed Description
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7.1 Overview
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7.2 Functional Block Diagram
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7.3 Feature Description
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7.3.1 High-Accuracy Output Voltage
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7.3.2 Error Detection Comparator Output
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7.3.3 Thermal Protection
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7.3.4 Short-Circuit Protection (Current Limit)
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7.4 Device Functional Modes
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7.4.1 Shutdown Mode
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7.4.2 Fixed or Adjustable Regulated Output
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8 Application and Implementation
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8.1 Application Information
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8.2 Typical Applications
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8.2.1 Design Requirements
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8.2.2 Detailed Design Procedure
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8.2.2.1 Using an External Resistive Divider
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8.2.2.2 External Capacitors
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8.2.2.3 Capacitor Characteristics
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8.2.2.4 Reverse Input-Output Voltage
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8.2.2.5 WSON Package Devices
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8.2.3 Application Curves
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9 Power Supply Recommendations
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10 Layout
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10.1 Layout Guidelines
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10.2 Layout Examples
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10.3 WSON Mounting
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11 Device and Documentation Support
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11.1 Documentation Support
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11.1.1 Related Documentation
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11.2 Community Resources
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11.3 Trademarks
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11.4 Electrostatic Discharge Caution
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11.5 Glossary
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12 Mechanical, Packaging, and Orderable Information
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Product
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DocumentsTools &
SoftwareSupport &
CommunityLP2986
SNVS137I – MARCH 1999 – REVISED SEPTEMBER 2015
LP2986 Micropower, 200-mA Ultra-Low-Dropout Fixed or Adjustable Voltage Regulator
1 Features 3 Description
The LP2986 is a 200-mA high-precision LDO1• Wide Supply Voltage Range (16 V Maximum) regulator with a wide input voltage supply. The device
• Ultra-Low-Dropout Voltage has two output voltage modes: a fixed-precision
• 0.5% Output Voltage Accuracy (A Grade) output mode and an adjustable output voltage via an
external resistive divider.• Ensured 200-mA Output Current
• < 1-μA Quiescent Current when Shutdown Using an optimized Vertically Integrated PNP (VIP)
process, the LP2986 delivers superior performance:• Low GROUND Pin Current at All Loads
• Dropout Voltage: Typically 180 mV at 200-mA• High Peak Current Capability (400 mA Typical) load, and 1 mV at 1-mA load.
• Overtemperature/Overcurrent Protection • GROUND Pin Current: Typically 1 mA at 200-mA
• −40°C to +125°C Junction Temperature Range load, and 200 μA at 10-mA load.
• Sleep Mode: The LP2986 draws less than 1 μA
2 Applications quiescent current when SHUTDOWN pin is pulled
low.• Cellular Phones
• ERROR Flag: The built-in ERROR flag goes low• Palmtop/Laptop Computers when the output drops approximately 5% below
• Camcorders, Personal Stereos, Cameras nominal.
• Precision Output: The standard product versions
available can be pin-strapped (using the internal
resistive divider) to provide output voltages of 5 V,
3.3 V, or 3 V with ensured accuracy of 0.5% (A
grade) and 1% (standard grade) at room
temperature.
Device Information(1)
PART NUMBER PACKAGE BODY SIZE (NOM)
SOIC (8) 4.90 mm × 3.91 mm
LP2986 VSSOP (8) 3.00 mm × 3.00 mm
WSON (8) 4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
<http://www.ti.com/product/LP2986?dcmp=dsproject&hqs=pf>

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LP2986
SNVS137I – MARCH 1999 – REVISED SEPTEMBER 2015 www.ti.com
Table of Contents
7.4 Device Functional Modes........................................ 141 Features .................................................................. 1
8 Application and Implementation ........................ 152 Applications ........................................................... 1
8.1 Application Information............................................ 153 Description ............................................................. 1
8.2 Typical Applications ................................................ 154 Revision History..................................................... 2
9 Power Supply Recommendations...................... 195 Pin Configuration and Function ........................... 3
10 Layout................................................................... 206 Specifications......................................................... 4 10.1 Layout Guidelines ................................................. 206.1 Absolute Maximum Ratings ...................................... 4
10.2 Layout Examples................................................... 206.2 ESD Ratings.............................................................. 4
10.3 WSON Mounting ................................................... 216.3 Recommended Operating Conditions....................... 4
11 Device and Documentation Support ................. 226.4 Thermal Information .................................................. 5
11.1 Documentation Support ........................................ 226.5 Electrical Characteristics........................................... 5
11.2 Community Resources.......................................... 226.6 Typical Characteristics .............................................. 8
11.3 Trademarks ........................................................... 227 Detailed Description ............................................ 13 11.4 Electrostatic Discharge Caution ............................ 227.1 Overview ................................................................. 13
11.5 Glossary ................................................................ 227.2 Functional Block Diagram ....................................... 13
12 Mechanical, Packaging, and Orderable7.3 Feature Description................................................. 13 Information ........................................................... 22
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision H (April 2013) to Revision I Page
• Added Device Information and Pin Configuration and Functions sections, ESD Ratings table, update Thermal
Values, Feature Description, Device Functional Modes, Application and Implementation, Power Supply
Recommendations, Layout, Device and Documentation Support, and Mechanical, Packaging, and Orderable
Information sections................................................................................................................................................................ 1
• Deleted Lead Temp from Abs Max table (in POA); delete Heatsinking sections re: specific packages (outdated info) ....... 4
Changes from Revision G (April 2013) to Revision H Page
• Changed layout of National Data Sheet to TI format ........................................................................................................... 18
2 Submit Documentation Feedback Copyright © 1999–2015, Texas Instruments Incorporated
Product Folder Links: LP2986
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<#%5B%7B%22num%22%3A92%2C%22gen%22%3A0%7D%2C%7B%22name%22%3A%22XYZ%22%7D%2C0%2C493.9%2C0%5D>

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<http://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SNVS137I&partnum=LP2986>

<http://www.ti.com/product/lp2986?qgpn=lp2986>

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