LMR14010A Converter Datasheet

LMR14010A Datasheet PDF, Equivalent


Part Number

LMR14010A

Description

1-A Step-Down Converter

Manufacture

etcTI

Total Page 24 Pages
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LMR14010A
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LMR14010A
SLUSD87 – MARCH 2018
LMR14010A 4-V to 40-V, 1-A Step-Down Converter With High Efficiency Eco-mode™
1 Features
1 Input Voltage Range: 4 V to 40 V with Transient
Protection to 45 V
• 0.7-MHz Switching Frequency
• Ultra-High Efficiency at Light Load with Eco-
mode™
• Low Dropout Operation
• Output Current up to 1 A
• Precision Enable Input
• Overcurrent Protection
• Internal Compensation
• Internal Soft-Start
• Small Overall Solution Size (TSOT-6L Package)
• Create a Custom Design Using the LMR14010A
With the WEBENCH® Power Designer
2 Applications
• Smart Meters
• Appliances
• Elevators and Escalators
• Cameras
Simplified Schematic
VIN
Cin
VIN
SHDN
LMR14010A
CB
SW
GND
FB
Cboot
L1
D1
R1
Cout
R2
Copyright © 2018, Texas Instruments Incorporated
3 Description
The LMR14010A is a PWM DC-to-DC buck (step-
down) regulator. With a wide input range from 4 V to
40 V, it is suitable for a wide range of applications
from industrial to automotive. An ultra-low 1-µA
shutdown current prolongs battery life. Operating
frequency is fixed at 0.7 MHz, allowing the use of
small external components while minimizing output
ripple voltage. Soft-start and compensation circuits
are implemented internally, limiting the number of
external components.
The LMR14010A is optimized for up to 1-A load
current. It has a 0.765-V nominal feedback voltage.
The device has built-in protection features such as
pulse-by-pulse current limit, thermal sensing and
shutdown due to excessive power dissipation. The
LMR14010A is available in a low profile TSOT-6L
package (2.9 mm × 1.6 mm × 0.85 mm).
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LMR14010A
TSOT-6L
2.9 mm x 1.6 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Efficiency vs. Current
SW= 0.7 MHz, VIN = 12 V, VOUT = 3.3 V)
100
90
80
70
60
50
40
30
20
0.1
1 10 100
Output Current (mA)
1000
C001
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.

LMR14010A
LMR14010A
SLUSD87 – MARCH 2018
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration................................................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings ............................................................ 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Typical Characteristics .............................................. 6
7 Detailed Description .............................................. 7
7.1 Overview ................................................................... 7
7.2 Functional Block Diagram ......................................... 7
7.3 Feature Description................................................... 8
7.4 Device Functional Modes.......................................... 9
8 Application and Implementation ........................ 10
8.1 Application Information............................................ 10
8.2 Typical Application ................................................. 10
9 Power Supply Recommendations...................... 15
10 Layout................................................................... 16
10.1 Layout Guidelines ................................................. 16
10.2 Layout Example .................................................... 16
11 Device and Documentation Support ................. 17
11.1 Device Support .................................................... 17
11.2 Receiving Notification of Documentation Updates 17
11.3 Community Resources.......................................... 17
11.4 Trademarks ........................................................... 17
11.5 Electrostatic Discharge Caution ............................ 17
11.6 Glossary ................................................................ 17
12 Mechanical, Packaging, and Orderable
Information ........................................................... 18
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
DATE
March 2018
REVISION
*
NOTES
Initial release.
2 Submit Documentation Feedback
Product Folder Links: LMR14010A
Copyright © 2018, Texas Instruments Incorporated


Features Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity LMR14010A SLUSD87 – MARCH 201 8 LMR14010A 4-V to 40-V, 1-A Step-Down Converter With High Efficiency Eco-mode ™ 1 Features •1 Input Voltage Rang e: 4 V to 40 V with Transient Protectio n to 45 V • 0.7-MHz Switching Frequen cy • Ultra-High Efficiency at Light L oad with Eco- mode™ • Low Dropout O peration • Output Current up to 1 A Precision Enable Input • Overcurre nt Protection • Internal Compensation • Internal Soft-Start • Small Over all Solution Size (TSOT-6L Package) • Create a Custom Design Using the LMR14 010A With the WEBENCH® Power Designer 2 Applications • Smart Meters • Ap pliances • Elevators and Escalators Cameras Simplified Schematic VIN Ci n VIN SHDN LMR14010A CB SW GND FB Cboot L1 D1 R1 Cout R2 Copyright © 2018, Texas Instruments Incorporated 3 Description The LMR14010A is a PWM DC -to-DC buck (stepdown) regulator. With a wide input range from 4 V to 40 V, it is suitable for a wide.
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