LMR436X0 [TI]

LMR436x0, 36-V, 1-A/2-A Buck Converter with 1.5 Î¼A IQ in 4-mm2 HotRodâ¢ QFN;


型号：	LMR436X0
厂家：	TEXAS INSTRUMENTS
描述：	LMR436x0, 36-V, 1-A/2-A Buck Converter with 1.5 Î¼A IQ in 4-mm2 HotRodâ¢ QFN
文件：	总8页 (文件大小：732K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

LMR43620, LMR43610

www.ti.com

SNVSBY4 – DECEMBER 2020

LMR436x0, 36-V, 1-A/2-A Buck Converter with 1.5 µA I_Qin 4-mm²HotRod^™QFN

1 Features

3 Description

•

Miniature solution size and low component cost

– 2-mm × 2-mm HotRod^™package with wettable

flanks

The LMR436x0 is the industry's smallest 36 V, 2 A

and 1 A synchronous step-down DC/DC converters in

2-mm x 2-mm HotRod^™package. This easy-to-use

converter supports a wide input voltage range of 3.0V

to 36 V with transients up to 42 V. The transient

tolerance reduces the necessary design effort to

protect against input overvoltage and meets the surge

immunity requirements of IEC 61000-4-5.

– Internal compensation

•

Optimized for ultra-low EMI requirements

– Spread spectrum reduces peak emissions

– Pin selectable FPWM mode for constant

frequency at light loads with MODE/SYNC pin

– F_SWsynchronization with MODE/SYNC pin

Designed for industrial automotive applications

– Junction temperature range: –40°C to +150°C

– Supports 42-V transients

The control architecture and feature-set are optimized

for an ultra-small solution size. The device uses peak

current mode control to minimize output capacitance.

The LMR436x0 minimizes input filter size by utilizing

•

pseudo-random spread spectrum,

low-EMI

– Supports 3-V_INminimum

– Adjustable up to 95% of V_IN, 3.3-V and 5-V

fixed V_OUToptions available

HotRod^™package, and an optimized pin-out. The

MODE/SYNC and RT pin variants can be used to set

or synchronize the frequency between 200 kHz and

2.2 MHz to avoid noise sensistive frequency bands.

•

> 85% efficiency at 1 mA

– 1.5-µA I_Q(switching) at 24 V_IN, 3.3 fixed V_OUT

Suitable for scalable power supplies

– Adjustable F_SW: 200 kHz - 2.2 MHz with RT pin

– Pin compatible with:

The rich feature set of the is designed to simplify

implementation for a wide range of automotive end

equipments.

The compact solution size and rich feature set of

LMR436x0 simplifies implementation for a wide range

of industrial applications.

•

LMR36506 (65 V, 600 mA)

LMR36503 (65 V, 300 mA)

2 Applications

Device Information

PART NUMBER

LMR43620

PACKAGE⁽¹⁾

VQFN-HR (9)

BODY SIZE (NOM)

2.00 mm × 2.00 mm

•

Advanced driver assistance systems: radar ECU

Infotainment and cluster: head unit, eCall

Body electronics and lighting

LMR43610

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

100

V_IN= 12 V

V_IN= 24 V

1E-5

0.0001

0.001 0.01

Load Current (A)

0.10.2 0.5 1

SNVS

Typical Solution Size

Efficiency: V_OUT= 3.3 V (Fixed), 2.2 MHz

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

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intellectual property matters and other important disclaimers. ADVANCE INFORMATION for preproduction products; subject to change

Product Folder Links: LMR43620 LMR43610

without notice.

LMR43620, LMR43610

SNVSBY4 – DECEMBER 2020

www.ti.com

4 Device and Documentation Support

4.1 Documentation Support

4.1.1 Related Documentation

For related documentation see the following:

•

Texas Instruments, Thermal Design by Insight not Hindsight Application Report

Texas Instruments, A Guide to Board Layout for Best Thermal Resistance for Exposed Pad Packages

Application Report

•

Texas Instruments, Semiconductor and IC Package Thermal Metrics Application Report

Texas Instruments, Thermal Design Made Simple with LM43603 and LM43602 Application Report

Texas Instruments, PowerPAD^™Thermally Enhanced Package Application Report

Texas Instruments, PowerPAD^™Made Easy Application Report

Texas Instruments, Using New Thermal Metrics Application Report

Texas Instruments, Layout Guidelines for Switching Power Supplies Application Report

Texas Instruments, Simple Switcher PCB Layout Guidelines Application Report

Texas Instruments, Construction Your Power Supply- Layout Considerations Seminar

Texas Instruments, Low Radiated EMI Layout Made Simple with LM4360x and LM4600x Application Report

4.2 Receiving Notification of Documentation Updates

To receive notification of documentation updates, navigate to the device product folder on ti.com. Click on

Subscribe to updates to register and receive a weekly digest of any product information that has changed. For

change details, review the revision history included in any revised document.

4.3 Support Resources

TI E2E^™support forums are an engineer's go-to source for fast, verified answers and design help — straight

from the experts. Search existing answers or ask your own question to get the quick design help you need.

Linked content is provided "AS IS" by the respective contributors. They do not constitute TI specifications and do

not necessarily reflect TI's views; see TI's Terms of Use.

4.4 Trademarks

HotRod^™, PowerPAD^™, and are trademarks of TI.

TI E2E^™is a trademark of Texas Instruments.

All trademarks are the property of their respective owners.

4.5 Electrostatic Discharge Caution

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled

with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may

be more susceptible to damage because very small parametric changes could cause the device not to meet its published

specifications.

4.6 Glossary

TI Glossary

This glossary lists and explains terms, acronyms, and definitions.

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LMR43620, LMR43610

SNVSBY4 – DECEMBER 2020

www.ti.com

5 Mechanical, Packaging, and Orderable Information

The following pages include mechanical, packaging, and orderable information. This information is the most

current data available for the designated devices. This data is subject to change without notice and revision of

this document. For browser-based versions of this data sheet, refer to the left-hand navigation.

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Product Folder Links: LMR43620 LMR43610

LMR43620, LMR43610

SNVSBY4 – DECEMBER 2020

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PACKAGE OUTLINE

RPE0009A

VQFN-HR - 1.0 mm max height

PLASTIC QUAD FLATPACK - NO LEAD

2.1

1.9

PIN 1 INDEX AREA

2.1

1.9

0.1 MIN

(0.05)

SECTION A-A

TYPICAL

1.0

0.8

SEATING PLANE

0.08 C

0.05

0.00

4X (0.15)

0.55

0.45

(0.2) TYP

0.275

0.175

4X (0.15)

0.1

C A B

0.05

2X 0.738

2X 0.25

0.000 PKG

2X 0.25

1.1 0.05

2X 0.738

0.275

0.175

PIN 1 ID

0.6

0.5

0.1

C A B

0.4

0.3

0.05

0.45

0.35

4224447/A 09/2018

NOTES:

1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing

per ASME Y14.5M.

2. This drawing is subject to change without notice.

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LMR43620, LMR43610

SNVSBY4 – DECEMBER 2020

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EXAMPLE BOARD LAYOUT

RPE0009A

VQFN-HR - 1.0 mm max height

PLASTIC QUAD FLATPACK - NO LEAD

2X (0.75)

2X (0.4)

(0.35)

4X (0.225)

2X (0.575)

(1.3)

2X (0.738)

4X (0.6)

2X (0.25)

0.000 PKG

(0.55)

4X (0.25)

2X (0.25)

SEE SOLDER MASK

DETAILS

(R0.05) TYP

2X (0.738)

2X (0.575)

SYMM

(1.8)

2X (0.7)

LAND PATTERN EXAMPLE

EXPOSED METAL SHOWN

SCALE: 30X

0.05 MAX

ALL AROUND

0.05 MIN

ALL AROUND

METAL UNDER

SOLDER MASK

METAL EDGE

EXPOSED

METAL

EXPOSED

METAL

SOLDER MASK

OPENING

SOLDER MASK

OPENING

NON SOLDER MASK

DEFINED

(PREFERRED)

SOLDER MASK

DEFINED

SOLDER MASK DETAILS

4224447/A 09/2018

NOTES: (continued)

3. For more information, see Texas Instruments literature number SLUA271 (www.ti.com/lit/slua271).

4. Vias are optional depending on application, refer to device data sheet. If any vias are implemented, refer to their locations shown

on this view. It is recommended that vias under paste be ﬁlled, plugged or tented.

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Product Folder Links: LMR43620 LMR43610

LMR43620, LMR43610

SNVSBY4 – DECEMBER 2020

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EXAMPLE STENCIL DESIGN

RPE0009A

VQFN-HR - 1.0 mm max height

PLASTIC QUAD FLATPACK - NO LEAD

2X (0.75)

2X (0.55)

2X (0.35)

(0.4)

2X (0.5)

4X (0.225)

(0.925)

(0.175)

2X (0.738)

4X (0.6)

2X (0.25)

4X (0.25)

0.000 PKG

2X (0.25)

(R0.05) TYP

2X (0.738)

2X (0.575)

SYMM

(1.8)

2X (0.7)

SOLDER PASTE EXAMPLE

BASED ON 0.125 MM THICK STENCIL

SCALE: 30X

PADS 1 & 8:

90% PRINTED SOLDER COVERAGE BY AREA UNDER PACKAGE

PAD 9:

85% PRINTED SOLDER COVERAGE BY AREA UNDER PACKAGE

DWG_NO:5/REV:5 MM_YYYY:5

NOTES: (continued)

5. Laser cutting apertures with trapezoidal walls and rounded corners may oﬀer better paste release. IPC-7525 may have alternate

design recommendations.

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PACKAGE OPTION ADDENDUM

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12-Jan-2021

PACKAGING INFORMATION

Orderable Device

Status Package Type Package Pins Package

Eco Plan

Lead finish/

Ball material

MSL Peak Temp

Op Temp (°C)

Device Marking

Samples

Drawing

Qty

(1)

(2)

(3)

(4/5)

(6)

LMR43610MB3RPER

LMR43620MB5RPER

PREVIEW VQFN-HR

RPE

3000

TBD

Call TI

-40 to 150

⁽¹⁾The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.

LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.

NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.

PREVIEW: Device has been announced but is not in production. Samples may or may not be available.

OBSOLETE: TI has discontinued the production of the device.

⁽²⁾RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance

do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may

reference these types of products as "Pb-Free".

RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.

Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based

flame retardants must also meet the <=1000ppm threshold requirement.

⁽³⁾MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.

⁽⁴⁾There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.

⁽⁵⁾Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation

of the previous line and the two combined represent the entire Device Marking for that device.

(6)

Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two

lines if the finish value exceeds the maximum column width.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information

provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and

continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.

TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.

Addendum-Page 1

IMPORTANT NOTICE AND DISCLAIMER

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AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY

IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD

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standards, and any other safety, security, or other requirements. These resources are subject to change without notice. TI grants you

permission to use these resources only for development of an application that uses the TI products described in the resource. Other

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applicable warranties or warranty disclaimers for TI products.IMPORTANT NOTICE

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LMR436X0 [TI]

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