LP8862QPWPRQ1 [TI]
适用于汽车照明的高性能 2 通道 LED 驱动器 | PWP | 20 | -40 to 125;
| 型号： | LP8862QPWPRQ1 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 适用于汽车照明的高性能 2 通道 LED 驱动器 | PWP | 20 | -40 to 125 PC 驱动 光电二极管 接口集成电路 驱动器 |
| 文件： | 总9页 (文件大小：565K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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LP8862-Q1
ZHCSFE4 –AUGUST 2016
LP8862-Q1 具有两条 160mA 通道的低 EMI 汽车类 LED 驱动器
1 特性
3 说明
1
•
适用于汽车电子 应用
LP8862-Q1 是一款带有集成 DC-DC 转换器的低 EMI
且易于使用的汽车类高效 LED 驱动器。该 DC-DC 转
换器支持升压和 SEPIC 工作模式。该器件具有双路高
精度电流阱，可通过脉宽调制 (PWM) 输入信号提供调
光比率较高的亮度控制。
•
具有符合 AEC-Q100 标准的下列结果：
–
器件温度 1 级：-40℃ 至 +125℃ 的环境运行温
度范围
•
•
输入工作电压范围：4.5V 至 40V
双路高精度电流阱
升压/SEPIC 转换器可基于 LED 电流阱余量电压提供
自适应输出电压控制。该特性可在所有条件下将电压调
节到能够满足需要的最低水平，从而最大限度地降低功
耗。DC-DC 转换器支持针对开关频率进行扩频以及使
用专用引脚实现外部同步。凭借较大可调节频率范
围，LP8862-Q1 能够避免调幅 (AM) 射频波段干扰。
–
–
–
电流匹配度为 1%（典型值）
LED 灯串电流高达 160mA/通道
100Hz 下的调光比率高达 10000:1
•
适用于 LED 灯串电源的集成升压/SEPIC 转换器
–
–
–
–
输出电压高达 45V
开关频率：300kHz 至 2.2MHz
开关同步输入
LP8862-Q1 的输入电压范围为 4.5V 至 40V，支持汽
车启动/停止以及负载突降的情况。器件在 100Hz 下支
持的 PWM 亮度调光比率高达 10000:1输入 PWM 频
率。LP8862-Q1 集成了丰富的故障检测 功能。该器件
可选择驱动外部 P 沟道场效应晶体管 (FET)，以在发
生故障时断开输入电源与系统间的连接。该特性也可减
少浪涌电流并降低待机功耗。
扩展频谱可降低电磁干扰 (EMI)
•
•
电力线场效应晶体管 (FET) 控制，可实现浪涌电流
保护和待机节能
丰富的故障检测功能 特性
–
–
故障输出
输入电压过压保护 (OVP)、欠压锁定 (UVLO)
和过流保护 (OCP)
如需完整数据表或其他设计资源，请参见：请求
–
–
开路和短路 LED 故障检测
LP8862-Q1。
热关断
器件信息(1)
•
最大限度减少外部组件数
器件型号
LP8862-Q1
封装
封装尺寸（标称值）
2 应用
HTSSOP (20)
6.50mm x 4.40mm
(1) 要了解所有可用封装，请见数据表末尾的可订购产品附录。
•
为以下应用提供背光：
–
–
–
–
–
–
汽车信息娱乐系统
汽车仪表板
简化电路原理图
VIN
4.5...40 V
RISENSE
L1
Q1
D1
VOUT up to 45 V
智能车镜
CIN BOOST
C
OUT
抬头显示屏 (HUD)
中央信息显示屏 (CID)
音频 - 视频导航 (AVN)
RGS
R2
R1
SW
SD
VSENSE_N
VIN
FB
C
FB
C
IN
Up to 160 mA/string
LDO
系统效率
CLDO
RFSET
OUT1
OUT2
LP8862-Q1
95
90
85
80
75
70
65
60
55
50
FSET
SYNC
PWM
BRIGHTNESS
EN
VDDIO/EN
FAULT
FAULT
ISET
PGND GND PAD
RISET
VDDIO
VIN=5V
VIN=8V
VIN=12V
VIN=16V
Copyright © 2016, Texas Instruments Incorporated
0
10
20
30
40
50
60
70
80
90 100
Brightness (%)
D001
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.
English Data Sheet: SNVSAM7
LP8862-Q1
ZHCSFE4 –AUGUST 2016
www.ti.com.cn
4 器件比较表
LP8860-Q1
LP8862-Q1
LP8861-Q1
TPS61193-Q1
TPS61194-Q1
TPS61196-Q1
VIN 范围
3V 至 48V
4.5V 至 45V
4.5V 至 45V
4.5V 至 45V
4.5V 至 45V
8V 至 30V
LED 通道数量
LED 电流/通道
支持 I2C/SPI
支持 SEPIC
4
150mA
有
2
160mA
无
4
100mA
无
3
100mA
无
4
100mA
无
6
200mA
无
无
有
有
有
有
无
2
版权 © 2016, Texas Instruments Incorporated
LP8862-Q1
www.ti.com.cn
ZHCSFE4 –AUGUST 2016
5 器件和文档支持
5.1 Third-Party Products Disclaimer
TI'S PUBLICATION OF INFORMATION REGARDING THIRD-PARTY PRODUCTS OR SERVICES DOES NOT
CONSTITUTE AN ENDORSEMENT REGARDING THE SUITABILITY OF SUCH PRODUCTS OR SERVICES
OR A WARRANTY, REPRESENTATION OR ENDORSEMENT OF SUCH PRODUCTS OR SERVICES, EITHER
ALONE OR IN COMBINATION WITH ANY TI PRODUCT OR SERVICE.
5.2 文档支持
5.2.1 相关文档ꢀ
相关文档如下：
•
•
•
•
•
《使用 LP8862-Q1EVM 评估模块》
《PowerPAD™ 耐热增强型封装应用手册》
《了解开关模式电源中的升压功率级》
《基于 SEPIC 拓扑设计 DC/DC 转换器》
Power Stage Designer™ 工具可用于升压和 SEPIC 模式：http://www.ti.com/tool/cn/powerstage-designer
5.3 接收文档更新通知
如需接收文档更新通知，请访问 www.ti.com.cn 网站上的器件产品文件夹。点击右上角的提醒我 (Alert me) 注册
后，即可每周定期收到已更改的产品信息。有关更改的详细信息，请查阅已修订文档中包含的修订历史记录。
5.4 社区资源
The following links connect to TI community resources. Linked contents are 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.
TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration
among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help
solve problems with fellow engineers.
Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and
contact information for technical support.
5.5 商标
E2E is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
5.6 静电放电警告
这些装置包含有限的内置 ESD 保护。 存储或装卸时，应将导线一起截短或将装置放置于导电泡棉中，以防止 MOS 门极遭受静电损
伤。
5.7 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
6 机械、封装和可订购信息
以下页中包括机械、封装和可订购信息。这些信息是针对指定器件可提供的最新数据。这些数据会在无通知且不对
本文档进行修订的情况下发生改变。欲获得该数据表的浏览器版本，请查阅左侧的导航栏。
版权 © 2016, Texas Instruments Incorporated
3
PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
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)
LP8862QPWPRQ1
ACTIVE
HTSSOP
PWP
20
2000 RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 125
LP8862Q
(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
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