DC-DC宽电压输入，5V/1.3A输出电源管理芯片LM5010A_dcdc转换器4个电压资源-CSDN文库

1星需积分: 41 103 浏览量 2017-11-14 14:02:15 上传评论 2 收藏 1.16MB PDF 举报

资源详情

资源评论

VIN

BST

LM5010A

VCC

RON/SD

6V - 75V

Input

OUT

RTN

ISEN

SGND

SHUTDOWN

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

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.

LM5010A

LM5010A-Q1

SNVS376F –OCTOBER 2005–REVISED MAY 2016

LM5010A, LM5010A-Q1 High-Voltage 1-A Step-Down Switching Regulator

1 Features

• LM5010A-Q1 Qualified for Automotive

Applications

• AEC-Q100 Qualified With the Following Results:

– Device Temperature Grade 1: –40°C to 125°C

Ambient Operating Temperature Range

– Device Temperature Grade 0: –40°C to 150°C

Ambient Operating Temperature Range

– Device HBM ESD Classification Level 2

– Device CDM ESD Classification Level C5

• Wide 6-V to 75-V Input Voltage Range

• Valley Current Limit at 1.25 A

• Programmable Switching Frequency Up To 1 MHz

• Integrated 80-V N-Channel Buck Switch

• Integrated High Voltage Bias Regulator

• No Loop Compensation Required

• Ultra-Fast Transient Response

• Nearly Constant Operating Frequency With Line

and Load Variations

• Adjustable Output Voltage

• 2.5-V, ±2% Feedback Reference

• Programmable Soft-Start

• Thermal Shutdown

• Exposed Thermal Pad for Improved Heat

Dissipation

2 Applications

• Non-Isolated Telecommunications Regulators

• Secondary Side Post Regulators

• Automotive Electronics

3 Description

The LM5010Ax step-down switching regulator is an

enhanced version of the LM5010 with the input

operating range extended to 6-V minimum. The

LM5010Ax features all the functions needed to

implement a low-cost, efficient, buck regulator

capable of supplying in excess of 1-A load current.

This high-voltage regulator integrates an N-Channel

Buck Switch, and is available in thermally enhanced

10-pin WSON and 14-pin HTSSOP packages. The

constant ON-time regulation scheme requires no loop

compensation resulting in fast load transient

response and simplified circuit implementation. The

operating frequency remains constant with line and

load variations due to the inverse relationship

between the input voltage and the ON-time. The

valley current limit detection is set at 1.25 A.

Additional features include: VCC undervoltage

lockout, thermal shutdown, gate drive undervoltage

lockout, and maximum duty cycle limiter.

Device Information

(1)

PART NUMBER PACKAGE BODY SIZE (NOM)

LM5010Ax

WSON (10) 4.00 mm × 4.00 mm

HTSSOP (14) 4.40 mm × 5.00 mm

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

the end of the data sheet.

Basic Step-Down Regulator

LM5010A

LM5010A-Q1

SNVS376F –OCTOBER 2005–REVISED MAY 2016

www.ti.com

Product Folder Links: LM5010A LM5010A-Q1

Table of Contents

1 Features.................................................................. 1

2 Applications ........................................................... 1

3 Description ............................................................. 1

4 Revision History..................................................... 2

5 Pin Configuration and Functions......................... 3

6 Specifications......................................................... 4

6.1 Absolute Maximum Ratings ...................................... 4

6.2 ESD Ratings: LM5010A............................................ 4

6.3 ESD Ratings: LM5010A-Q1, LM5010-Q0................. 4

6.4 Recommended Operating Conditions ...................... 4

6.5 Thermal Information ................................................. 5

6.6 Electrical Characteristics........................................... 5

6.7 Switching Characteristics.......................................... 6

6.8 Typical Characteristics.............................................. 8

7 Detailed Description.............................................. 9

7.1 Overview .................................................................. 9

7.2 Functional Block Diagram ......................................... 9

7.3 Feature Description................................................... 9

7.4 Device Functional Modes........................................ 13

8 Application and Implementation ........................ 14

8.1 Application Information............................................ 14

8.2 Typical Application .................................................. 14

8.3 Do's and Don'ts....................................................... 20

9 Power Supply Recommendations...................... 21

10 Layout................................................................... 21

10.1 Layout Guidelines ................................................. 21

10.2 Layout Example .................................................... 22

11 Device and Documentation Support ................. 23

11.1 Related Links ........................................................ 23

11.2 Community Resources.......................................... 23

11.3 Trademarks........................................................... 23

11.4 Electrostatic Discharge Caution............................ 23

11.5 Glossary................................................................ 23

12 Mechanical, Packaging, and Orderable

Information ........................................................... 23

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision E (February 2013) to Revision F Page

• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation

section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and

Mechanical, Packaging, and Orderable Information section.................................................................................................. 1

Changes from Revision D (February 2013) to Revision E Page

• Changed layout of National Data Sheet to TI format ............................................................................................................. 1

ExposedPad

1NC 14 NC

2SW 13 VIN

3BST 12 VCC

SEN

11 R

/SD

GND

10 SS

6RTN 9 FB

7NC 8 NC

ExposedPad

1SW 10 VIN

2BST 9 VCC

SEN

8 R

/SD

GND

7 SS

5RTN 6 FB

LM5010A

LM5010A-Q1

www.ti.com

SNVS376F –OCTOBER 2005–REVISED MAY 2016

Product Folder Links: LM5010A LM5010A-Q1

5 Pin Configuration and Functions

DPR Package

10-Pin WSON

Top View

PWP Package

14-Pin HTSSOP

Top View

Pin Functions

I/O DESCRIPTION

NAME WSON HTSSOP

BST 2 3 I

Boost pin for bootstrap capacitor: Connect a capacitor from SW to the BST pin. The

capacitor is charged from VCC through an internal diode during the buck switch OFF-

time.

EP — — — Exposed pad

FB 6 9 I

Voltage feedback input from the regulated output: Input to both the regulation and

overvoltage comparators. The FB pin regulation level is 2.5 V.

SEN

3 4 I

Current sense: During the buck switch OFF-time, the inductor current flows through the

internal sense resistor, and out of the ISEN pin to the free-wheeling diode. The current

limit comparator keeps the buck switch off if the ISEN current exceeds 1.25 A (typical).

NC — 1, 7, 8, 14 — No connection. Can be connected to ground plane to improve heat dissipation.

/SD 8 11 I

ON-time control and shutdown: An external resistor from VIN to this pin sets the buck

switch ON-time. Grounding this pin shuts down the regulator.

RTN 5 6 —

Circuit ground: Ground return for all internal circuitry other than the current sense

resistor.

GND

4 5 — Sense ground: Recirculating current flows into this pin to the current sense resistor.

SS 7 10 I

Soft start: An internal 11.5-µA current source charges the SS pin capacitor to 2.5 V to

softstart the reference input of the regulation comparator.

SW 1 2 O

Switching node: Internally connected to the buck switch source. Connect to the inductor,

free-wheeling diode, and bootstrap capacitor.

VCC 9 12 I

Output of the bias regulator: The voltage at VCC is nominally equal to V

for V

< 8.9

V, and regulated at 7 V for V

> 8.9 V. Connect a 0.47-µF, or larger capacitor from VCC

to ground, as close as possible to the pins. An external voltage can be applied to this pin

to reduce internal dissipation if V

is greater than 8.9 V. MOSFET body diodes clamp

VCC to V

if V

> V

VIN 10 13 I

Input supply: Nominal input range is 6 V to 75 V. Input bypass capacitors should be

located as close as possible to the VIN pin and RTN pin.

LM5010A

LM5010A-Q1

SNVS376F –OCTOBER 2005–REVISED MAY 2016

www.ti.com

Product Folder Links: LM5010A LM5010A-Q1

(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings

only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended

Operating Conditions . Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2) For detailed information on soldering plastic HTSSOP and WSON packages, see Mechanical, Packaging, and Orderable Information.

6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)

(1)

MIN MAX UNIT

VIN 6 75 V

VIN to RTN –0.3 76 V

BST to RTN –0.3 90 V

SW to RTN (steady state) –1.5 V

BST to VCC 76 V

BST to SW 14 V

VCC to RTN –0.3 14 V

GND

to RTN –0.3 0.3 V

SS to RTN –0.3 4 V

VIN to SW 76 V

All other inputs to RTN –0.3 7 V

Lead temperature (soldering, 4 sec)

(2)

260 °C

Junction temperature (LM5010A, Q1,Q0) –40 150 °C

Storage temperature, T

stg

–65 150 °C

(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.

(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

6.2 ESD Ratings: LM5010A

VALUE UNIT

(ESD)

Electrostatic discharge

Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001

(1)

±2000

Charged-device model (CDM), per JEDEC specification JESD22-C101

(2)

±750

(1) AEC Q100-002 indicates that HBM stressing shall be in accordance with the ANSI/ESDA/JEDEC JS-001 specification.

(2) Level listed above is the passing level per ANSI/ESDA/JEDEC JS-001. JEDEC document JEP155 states that 500 V HBM allows safe

manufacturing with a standard ESD control process.

(3) Level listed above is the passing level per EIA-JEDEC JESD22-C101. JEDEC document JEP157 states that 250 V CDM allows safe

manufacturing with a standard ESD control process.

6.3 ESD Ratings: LM5010A-Q1, LM5010-Q0

VALUE UNIT

(ESD)

Electrostatic discharge

Human-body model (HBM), per AEC Q100-002

(1)(2)

±2000

Charged-device model (CDM), per AEC Q100-011

(3)

±750

(1) V

provides bias for the internal gate drive and control circuits. Device thermal limitations limit external loading.

6.4 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

MIN NOM MAX UNIT

Input voltage 6 75 V

Output current 1 A

Ext-V

External bias voltage

(1)

8 13 V

Operating junction temperature

LM5010A –40 125 °C

LM5010A-Q1, LM5010-Q0 –40 150 °C

LM5010A

LM5010A-Q1

www.ti.com

SNVS376F –OCTOBER 2005–REVISED MAY 2016

Product Folder Links: LM5010A LM5010A-Q1

(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report, SPRA953.

6.5 Thermal Information

THERMAL METRIC

(1)

LM5010A, LM5010A-Q1

UNITDPR (WSON) PWP (HTSSOP)

10 PINS 14 PINS

θJA

Junction-to-ambient thermal resistance 36 41.1 °C/W

θJC(top)

Junction-to-case (top) thermal resistance 31.9 26.5 °C/W

θJB

Junction-to-board thermal resistance 13.2 22.5 °C/W

Junction-to-top characterization parameter 0.3 0.7 °C/W

Junction-to-board characterization parameter 13.5 22.2 °C/W

θJC(bot)

Junction-to-case (bottom) thermal resistance 3 3.3 °C/W

(1) All minimum and maximum limits are specified by correlating the electrical characteristics to process and temperature variations and

applying statistical process control.

6.6 Electrical Characteristics

Typical values correspond to T

= 25°C, minimum and maximum limits apply over T

= –40°C to 125°C, V

= 48 V, and

= 200 kΩ (unless otherwise noted).

(1)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

REGULATOR

Reg VCC regulated output 6.6 7 7.4 V

- V

= 0 mA, F

< 200 kHz,

6 V ≤ V

≤ 8.5 V

100 mV

Bypass threshold V

increasing 8.9 V

Bypass hysteresis V

decreasing 260 mV

Output impedance

(0 mA ≤ I

≤ 5 mA)

= 6 V 55

ΩV

= 8 V 50

= 48 V 0.21

Current limit V

= 48 V, V

= 0 V 15 mA

UVLO

VCC

undervoltage lockout threshold V

increasing 5.25 V

UVLO

VCC

hysteresis V

decreasing 180 mV

UVLO

VCC

filter delay 100 mV overdrive 3 µs

Operating current Non-switching, FB = 3 V 675 950 µA

Shutdown current R

/SD = 0 V 100 200 µA

SOFT-START PIN

Internal current source 8 11.5 15 µA

CURRENT LIMIT

LIM

Threshold Current out of I

SEN

1 1.25 1.5 A

Resistance from I

SEN

to S

GND

130 mΩ

Response time 150 ns

ON TIMER, R

/SD PIN

Shutdown threshold Voltage at R

/SD rising 0.3 0.7 1.05 V

Threshold hysteresis 40 mV

REGULATION AND OVER-VOLTAGE COMPARATORS (FB PIN)

REF

FB regulation threshold

≤ 125°C 2.445 2.5 2.55

≤ 150°C,

over full operating junction

temperature range

2.435

2.44

FB overvoltage threshold 2.9 V

FB bias current 1 nA

剩余31页未读，继续阅读

评论收藏

内容反馈

weixin_41666476

2018-08-30

坑货浪费我积分，都是没用的资源

konghuiju123
上传者
2021-04-16

自己不会看手册，说资源没用，真的是没谁了

DC-DC宽电压输入，5V/1.3A输出电源管理芯片LM5010A

评论1

最新资源

DC-DC宽电压输入，5V/1.3A输出 电源管理芯片LM5010A

评论1

最新资源

相关推荐

电源管理芯片

描述输入电压影响输出电压的几个指标参数

高效率超宽输入电压范围DC-DC变换器的设计方案

宽电压输入4.5~60V DC-DC

A4403 宽输入电压范围DC/DC芯片

XD308H 12V500mA非隔离电源管理芯片方案.pdf

XD308H 18-600VDC超宽输入电压范围降压型DC-DC转换器 500mA.pdf

100V-120V-150V-200V降压恒压芯片.pdf

EUP3458（降压型DCDC，输入4.5V-30V，输出0.8V-15V，输出电流1.2A）.pdf

DC-DC变换芯片数据手册

汽车专用电源转换器输入6-16V DC输出5V / 2A DC-电路方案

升压转换器：升压转换器是一种 DC/DC 电源转换器，可将电压从输入（源）提升到输出（负载）。 在连续传导中-matlab开发

XD308H-18-600V超宽电压输入DC-DC降压电源芯片手册

双输出同步DC/DC电源管理芯片LTC3407EDD-2及其应用

国半推出两款4路输出系统电源管理IC，单价约3美元

DC-DC芯片输出电压计算分压电阻参数

TI宽输入DCDC电源解决方案

DCDC模块改5V输出的正确操作方法-综合文档

12V输入转5V/3.3V输出电源模块第二版.zip

XD308H.SchDoc

DC-DC功率芯片

5瓦小功率电源(AC-DC)电源方案-最佳供电方案--AP8012H应用设计指导V1.0.pdf

芯片查询大全v2.3(可替换查询)

论文研究-CPT系统输出电压与输入电压的关系模型建立 .pdf

这是啥电源DC/DC芯片,只知道是5V转3.3V的，外围没有电感。LED控制卡上看到的。-超低功耗LDO_ME6214系列_C2.0.pdf

开关电源+超宽电压输入

适用于5V和12V电压轨的备份解决方案

输出电压为60V的电源电路原理图.pdf

5V和3.3V直流降压模块.rar

IC-208H英文维修手册

DC-DC宽电压输入，5V/1.3A输出电源管理芯片LM5010A

升压转换器：升压转换器是一种 DC/DC 电源转换器，可将电压从输入（源）提升到输出（负载）。在连续传导中-matlab开发