Voltage Regulator. LMR10515 Datasheet

LMR10515 Regulator. Datasheet pdf. Equivalent

Part LMR10515
Description Step-Down Voltage Regulator
Feature Product Folder Order Now Technical Documents Tools & Software Support & Community LMR10515 SNVS.
Manufacture etcTI
Datasheet
Download LMR10515 Datasheet



LMR10515
Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
LMR10515
SNVS728D – OCTOBER 2011 – REVISED JUNE 2019
LMR10515 5.5-VIN, 1.5-A Step-Down Voltage Regulator in SOT-23 and WSON Packages
1 Features
1 Input Voltage Range of 3 V to 5.5 V
• Output Voltage Range of 0.6 V to 4.5 V
• Output Current up to 1.5 A
• 1.6-MHz (LMR10515X) and 3-MHz (LMR10515Y)
Switching Frequencies
• Low Shutdown IQ, 30 nA Typical
• Internal Soft-Start
• Internally Compensated
• Current-Mode PWM Operation
• Thermal Shutdown
• Tiny Overall Solution Reduces System Cost
• SOT-23 (2.92 × 2.84 × 1 mm) and
WSON (3 × 3 × 0.8 mm) Packaging
• Create a custom design using the LMR10515 with
the WEBENCH® Power Designer
2 Applications
• Point-of-Load Conversions from 3.3-V and 5-V
Rails
• Space Constrained Applications
• Battery Powered Equipment
• Industrial Distributed Power Applications
• Power Meters
• Portable Hand-Held Instruments
3 Description
The LMR10515 regulator is a monolithic, high
frequency, PWM step-down DC/DC converter in a 5-
pin SOT-23 and a 6-pin WSON package. It provides
all the active functions to provide local DC/DC
conversion with fast transient response and accurate
regulation in the smallest possible PCB area. With a
minimum of external components, the LMR10515 is
easy to use. The ability to drive 1.5-A loads with an
internal 130-mPMOS switch results in the best
power density available. The world-class control
circuitry allows on-times as low as 30ns, thus
supporting exceptionally high frequency conversion
over the entire 3-V to 5.5-V input operating range
down to the minimum output voltage of 0.6 V. The
LMR10515 is internally compensated, so it is simple
to use and requires few external components.
Switching frequency is internally set to 1.6 MHz, or 3
MHz, allowing the use of extremely small surface
mount inductors and chip capacitors. Even though the
operating frequency is high, efficiencies up to 93%
are easy to achieve. External shutdown is included,
featuring an ultra-low stand-by current of 30 nA. The
LMR10515 utilizes current-mode control and internal
compensation to provide high-performance regulation
over a wide range of operating conditions. Additional
features include internal soft-start circuitry to reduce
inrush current, pulse-by-pulse current limit, thermal
shutdown, and output over-voltage protection.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LMR10515
SOT-23 (5)
WSON (6)
2.90 mm × 1.60 mm
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
space
space
Simplified Application
EN
FB
R3
LMR10515 GND
L1
VIN
SW
VIN
VOUT
R1
C1
D1
C2
C3
R2
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.



LMR10515
LMR10515
SNVS728D – OCTOBER 2011 – REVISED JUNE 2019
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description, continued .......................................... 3
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ...................................... 5
7.2 Recommended Operating Ratings............................ 5
7.3 Electrical Characteristics........................................... 6
7.4 Typical Characteristics .............................................. 7
8 Detailed Description ............................................ 10
8.1 Overview ................................................................. 10
8.2 Functional Block Diagram ....................................... 11
8.3 Feature Description................................................. 12
9 Application and Implementation ........................ 13
9.1 Application Information............................................ 13
9.2 Typical Application ................................................. 13
10 Layout................................................................... 21
10.1 Layout Guidelines ................................................. 21
10.2 Layout Example .................................................... 21
10.3 Thermal Definitions ............................................... 21
10.4 WSON Package .................................................... 23
11 Device and Documentation Support ................. 24
11.1 Device Support...................................................... 24
11.2 Receiving Notification of Documentation Updates 24
11.3 Community Resources.......................................... 24
11.4 Trademarks ........................................................... 24
11.5 Electrostatic Discharge Caution ............................ 24
11.6 Glossary ................................................................ 24
12 Mechanical, Packaging, and Orderable
Information ........................................................... 25
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (April 2013) to Revision D
Page
• Editorial changes only; add WEBENCH links and top navigator icon for reference design................................................... 1
Changes from Revision B (April 2013) to Revision C
Page
• Changed layout of National Semiconductor data sheet to TI format...................................................................................... 1
2
Submit Documentation Feedback
Product Folder Links: LMR10515
Copyright © 2011–2019, Texas Instruments Incorporated





@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)