【产品】输入电压范围为3V~18V的三通道升压型WLED驱动器SGM3741，非常适用于TFT LCD显示与智能电话

时间： 2019-03-01 来源：SGMICRO

技术问答

圣邦微电子（SG Micro Corp）专注于高性能、高品质模拟集成电路研发，拥有先进的模拟集成电路设计能力，丰富的工艺、生产、测试的管理经验及一套完整的可靠性测试流程，确保产品性能和品质。圣邦微产品高达16大类数千款, 全部符合欧盟RoHS标准和绿色环保标准。

图一 SGM3741 三通道升压型WLED驱动器引脚图

SGM3741是一个三通道升压型DC/DC 转换器，每个通道具备25mA恒流输出能力，用来驱动WLED。该器件集成了38V功率MOSFETs，每个通道具备驱动高达10个白光LED（WLED）的能力，为了能够获得均匀亮度，它提供了内在的电流匹配。SGM3741提供两路PWM信号来控制背光亮度。PWM频率范围为2kHz~60kHz，这可以避免来自电感或陶瓷电容的噪声。结合两路PWM可以获得非常宽的亮度调节范围。PWM引脚也可以用于显示内容自适应背光控制（CABC）方案。它的内部开关频率恒定于600kHz。

SGM3741三通道升压型WLED驱动器具有的重要的特性是，具备多种保护电路，包括集成的38.5V过压保护（OVP）、软启动、逐周期电流限制以及热关断保护电路。SGM3741支持3V~18V输入电压，也可以用于单电池或双电池设备。SGM3741有2.2A电流限制。封装为绿色环保TQFN-3X3-16L。它在-40℃到+85℃的环境温度范围内工作。

SGM3741三通道升压型WLED驱动器的产品特性：

·高效率升压DC/DC WLED偏置电源

·内置38V，0.25Ω功率MOSFET

·3V~18V输入电压范围

·600kHz恒定开关频率

·每通道支持最多10个串联白光LEDs

·每通道25mA恒流

·开关电流限制：2.2A

·双路PWM调光方案可以获得大的调光范围

·2kHz~60kHz PWM 调光频率

·内部1MΩ下拉电阻@CTRL 引脚

·内部500kΩ上拉电阻@PWM引脚

·内部38.5V过电压保护

·逐周期过流保护

·软启动功能

·通过串联的LED从Vin到地无泄露

·热关断

·-40℃至+85℃工作温度范围

·绿色环保TQFN-3×3-16L封装

SGM3741三通道升压型WLED驱动器的市场应用：

·TFT LCD显示

·智能电话

发送到邮箱 |
+1 赞 0
收藏
评论 0
| 转发至：

本文由Vox翻译自SGMICRO，版权归世强硬创平台所有，非经授权，任何媒体、网站或个人不得转载，授权转载时须注明“来源：世强硬创平台”。

全部评论（0）

暂无评论

圣邦微电子的12位调光3通道WLED驱动器SGM37603/SGM37603A/SGM37604A，适合极暗环境使用

圣邦微电子的SGM37603/3A/4A WLED驱动器有24V输入耐压、1％电流通道匹配度和3％电流绝对精度。其中SGM37603具有11位调光分辨率，SGM37603A/4A具有12位调光分辨率，均通过I2C可编程各通道独立开启关闭控制，并提供完整的过压、过流、开路、短路、过热保护。

新产品发布时间 : 2019-05-16

【产品】高效率双通道38V升压型WLED驱动器SGM3738 ，

SGM3738是一个双通道升压型DC/DC 转换器，每个通道具备25mA恒流输出能力，用来驱动WLED。该器件集成了38V功率MOSFETs，每个通道具备驱动10个WLED的能力，为了能够获得均匀亮度，它提供了内在电流匹配。SGM3738支持PWM调制和one-wire数字接口，来控制背光亮度。

新产品发布时间 : 2019-02-28

【产品】内置升压调节器的双通道WLED驱动器SGM3743，智能手机的理性选择

SGM3743是双通道WLED驱动器，它为单芯锂离子电池供电的智能手机背光灯提供高度集成的解决方案。芯片内置了高效的升压调节器，集成了1.5A/40V功率MOSFET并且支持低至3V的输入电压。同时芯片具有两路大电流接收调节器，可以驱动10S2P WLED，并且芯片升压输出可以自动调节WLED正向电压，允许非常低的电压余量控制，从而有效提高LED串联的效率。

新产品发布时间 : 2019-03-02

SGMICRO（圣邦微）信号链和电源管理芯片选型指南

描述- SGMICRO specializes in high-performance and high-quality analog and mixed-signal integrated circuits, and is committed to building a comprehensive portfolio of the highest quality analog and mixed-signal integrated circuits to address all customer needs.

型号- SGM11108M,SGM8306-2,SGM8306-1,SGM61450,SGM3733B,SGM11108E,SGM852,SGM853,SGM851,SGM5347-12,SGM2558A,SGM2558B,SGM8261-5,SGM2564,SGM8261-1,SGM5347-10,SGM8261-2,SGM2549,SGM48017C,SGM72110,SGM8094,SGM836,SGM8091,SGM837,SGM61220,SGM8092,SGM8093,SGM835,SGM72108,SGM2553,SGM72106,SGM2555,SGM809B,SGM4519,SGM4517,SGM4518,SGM48010,SGM11106C,SGM63600,SGM41611,SGM4520,SGM4521,SGM48005,SGM8417-4,SGM8417-2,SGM4051C,SGM48000,SGM48001,SGM48002,SGM3843A,SGM61433,SGM621,SGM84782,74HC574,SGM58031,SGM620,SGM862,SGM41600,SGM2572,SGM41603,SGM860,SGM2571,SGM51622H,SGM4995,SGM4511,SGM2574,SGM4996,SGM4512,SGM4510,SGM2575,SGM51622D,SGM4515,SGM8T245S,SGM4516,SGM8250-1,SGM8250-2,SGM4514,SGM3209,SGM809,SGM8557-3,SGM8557-1,SGM8557-2,SGM803,SGM61012,SGM804,SGM802,SGM61013,SGM810,SGM811,SGM61007,SGM61006,SGM4782,SGM7237B,SGM8902,SGM8903,SGM8904,SGM4542,SGM8905,SGM4548,SGM4549,SGM3699,SGM4546,SGM4547,SGM48013C,SGM62110,SGM61020,SGM62112,AAP6153A,SGM61022,SGM62111,SGM800,SGM2596,SGM3200,SGM3206,SGM8270-2,SGM3207,SGM4535,SGM3204,SGM8270-4,SGM8T245,SGM829,SGM61230,SGM42512,SGM41664,SGM825,SGM61232,SGM823,SGM61234,SGM824,SGM891B,SGM42507,SGM42506,SGM40567,SGM4560,SGM42505,SGM4561,SGM6503,SGM4566,SGM8925,SGM6502,SGM8926,SGM6501,SGM4564,SGM8927,SGM5349-16,SGM4565,SGM6505,SGM4568,SGM6504,SGM8909,SGM818,SGM890B,SGM816,SGM42501,SGM40565,SGM42500,SGM814,SGM815,SGM812,SGM40560,SGM40561,SGM821,SGM822,SGM61235,SGM820,SGM4551,SGM4552,SGM4550,SGM4555,SGM4556,SGM4553,SGM4554,SGM51652S8,SGM8910,SGM5347-8,SGM4558,SGM11124E,SGM37863A,SGM11124F,74LVC2T45,SGM893B,SGM4581,SGM8941,SGM4582,SGM4583,SGM48521Q,SGM8704,SGM4588,SGMNQ59430,SGM8705,SGM4589,SGM8706,SGM8707,SGM8942,SGM8701,SGM8702,SGM8703,SGM12213A,SGM11210A,SGM61060,SGM2050C,SGM12UB1D2,SGM892B,SGM8276-4,SGM6510,SGM4573,SGM3001,SGM4574,SGM42513,SGM6514,SGM3005,SGM6513,SGM4578,SGM8276-2,SGM3002,SGM6512,SGM42622B,SGM8276-1,SGM3003,SGM6511,SGM4576,SGM8931,SGMOP17C,SGM8932,SGM8933,SGM6516,SGM12214A,SGM8934,SGM6515,SGM11210M,SGMNE20220,74AVC8T245,SGM3141B,SGM61030,SGM42403Q,SGM42553,SGM61032,SGM61031,74HC165,SGM62116,SGM8953-1,SGM62118,SGM8953-2,SGM62117,SGM8708,SGM8709,SGM4075-2,SGM3140B,SGM61040,SGM4075-1,SGM42544,SGM7300A,SGM7300B,SGM42541,SGM42540,SGM8951,SGM8952,SGM8710,SGM4590,SGM5200,SGM38045,SGM38042,SGM6533,SGM8711,SGM8712,SGM8955,SGM38046,SGM8956,SGM2053S,SGM8199L2,LM2904,SGM8199L1,SGM41002,SGM8968-4,SGM8968-2,LM2902,SGM8968-1,SGM8740,SGM8741,SGM8742,SGM2077A,SGM8743,SGM2077B,SGM8263-1,SGM8748,SGM8263-2,SGM8417-1,SGM8749,SGM12CB1A5,SGM8744,SGM40666B,SGM8745,SGM11104S,SGM40666A,SGM8746,SGM8747,SGM41513D,SGM41513A,SGM42561,SGM42560,SGM8957-1,SGM8957-2,SGM42562,SGM5208-14,SGM5223,SGM48018C,SGM11102F,SGM11102G,SGM41512A,SGM37603A,SGM8521,SGM8522,SGM11102S,SGM33685A,SGM5018,SGM33685B,SGM33685C,SGM8524,SGM8604-1,SGM11103E,SGM8604-5,SGM8193A3,SGM11103F,SGM8604-2,SGM8193A2,SGM48019C,SGM8604-3,SGM8193A1,SGM8193A0,SGM37604A,SGM8751,SGM11103S,SGM41007,SGM41008,SGM6332,SGM8750,FT2830P,SGM11212M,SGM41280,SGM41281,SGM41283,SGM5353-16,SGM37891A,SGM41285,SGM41286,SGM7SZ244S,SGM8542,SGM51652H8,SGM8543,SGM8301,SGM8544,SGM8302,SGM8545,SGM51652H4,SGM8541,SGM8429C-4,SGM8304,SGM8607-2,SGM37892A,SGM13003A,SGM8531,SGM8773,SGM8532,SGM8534,SGM8770,SGM8771,SGM8772,SGM8535,SGM8536,SGM8537,SGM12024A,SGM8538,SGM65230,SGM37893A,SGM65231,SGM65232,SGM8969-2,SGM8969-1,SGM13002A,SGM2035C,SGM7232,SGM9128YP,SGM41291,SGM2036S,74LVC1G32Q,SGM13001C,SGM13001B,74LVC138,SGM2581E,SGM8958-2,SGM41295,SGM13001A,SGM8958-1,SGM7222,SGM6132,SGM8554,SGM7223,SGM8555,SGM7224,SGM6130,SGM8556,SGM2581C,SGM8551,SGM7220,SGM2581A,SGM8552,SGM7226,SGM7227,SGM7228,SGM7229,SGM44599,SGM8581,SGM8713A-1,SGM8582,SGM6613A,SGM8584,SGM832B,SGM41282C,SGM832A,SGM8714B-1,SGM8924A,SGM811C,SGM5355-16,SGM7SZ19,74LVC1G125,SGM48535B,SGM89000,SGM7SZ14,SGM811B,SGM48535A,SGM48752X,SGM431VB,SGM2560A,SGM37603,SGM2560B,SGM6611C,SGM15CB1A4,SGM810B,SGM41280A,SGM8591,SGM8592,SGM48753X,SGM9203,SGM6612A,SGM8594,SGM8922A,SGM4T245,SGM48753,SGM48754,SGM48755,SGM48756,SGM51242R8,SGM48757,SCM40668,SGM813B,SGM48759,74AVC4T245,SGM8140,SGM8141,SGM48751,SGM449,SGM48752,SGMNQ07430,SGMPM21330,SGM48510,SGM458,SGM3785S,SGM37864,SGM61720,SGM459,SGM37863,SGM457,SGM8142,SGM452,SGM450,SGM451,SGM05UB1B3,SGM37862,SGM37861,SGM05CB1A8,SGM05CB1A7,SGM812B,SGM05CB1A4,74GTL2005,SGM25881,SGM447,SGM448,SGM446,SGM7SZ244,SGM8478-1C,SGM51242R4,SGM8139,SGM51242R2,SGM3705,SGM48536,SGM48537,SGM48538,SGM48539,SGM5351-16,SGM2588G,SGM2588E,SGM2588K,SGM3712,SGM3713,SGM2588C,SGM3710,SGM3711,SGM2588A,SGM48522,SGM48523,SGM48525,SGM48526,SGM48760,SGMNQ07440,SGM48520,SGM48521,SGM8557-5,SGM71XX,SGM706B,SGM460,SGM3701,SGM3700,SGM3727,SGM3741B,SGM3725,SGM3726,SGMOP07,SGM898,SGM899,SGM896,SGM897,SGM895,SGM4823,SGM2566B,SGM3735,SGM3732,SGM4822,SGM2566A,SGM3716,SGM3740B,SGM48544,SGM4806,SGM3717,SGM48545,SGM3714,SGM3715,SGM4809,SGM4807,SGM3718,SGM4808,SGM3719,74LVC157,SGM48780,SGM48540,SGM48541,SGM48542,SGM48543,SGM37898,SGM51652H,SGM51652D,SGM3720,SGM37891,SGM4812,SGM37892,SGM4810,SGM37895,SGM3749,SGM3747,SGM3748,SGM72204A,SGMNQ40430,SGM

选型指南 - SGMICRO - 2024/6/11 PDF 英文下载

SGM3743 Dual-Channel WLED Driver for Smart Phone

型号- SGM3743YG/TR,SGM3743

数据手册 - SGMICRO - REV.A.1 - FEBRUARY 2021 PDF 英文下载

SGM37310 35.5V High Efficiency, Boost White LED Driver with PWM Dimming Control

型号- SGM37310YTDI6G/TR,SGM37310

数据手册 - SGMICRO - REV. A 1 - AUGUST 2024 PDF 英文下载查看更多版本

SGM3752 38V High Efficiency, Boost White LED Driver with PWM Dimming Control

型号- SGM3752,SGM3752YTN6G/TR

数据手册 - SGMICRO - REV. A. 2 - AUGUST 2023 PDF 英文下载查看更多版本

SGM3756 38V High Efficiency, Boost White LED Driver with PWM Dimming Control

型号- SGM3756YTDI6G/TR,SGM3756

数据手册 - SGMICRO - REV. A. 1 - SEPTEMBER 2022 PDF 英文下载

SG Micro Overview

商品及供应商介绍 - SGMICRO - Jan. 2024 PDF 英文下载

圣邦微LED驱动器：白光LED驱动和LED闪光灯驱动，产品种类多，亮度可调，驱动电流最高可达2A

圣邦微电子（北京）股份有限公司（SGMICRO Corp）是一家专注于高性能、高品质模拟集成电路研发和销售的半导体公司，其推出的LED驱动器在显示屏LED背光驱动、LED闪光灯驱动等领域有着非常广泛的应用。圣邦微电子的LED驱动器分为白光LED驱动和LED闪光灯驱动两大类，包括高压多串多并WLED驱动器及大电流LED闪光灯驱动器等系列产品。

器件选型发布时间 : 2019-02-10

SGMICRO白光LED驱动器选型表

1-6通道LED灯驱动，线性、开关驱动、电荷泵驱动，支持线性、PWM、IIC调光，mA级别的调光电流，1uA关断电流，uA级别静态电流

产品型号	品类	LED Connection	CH	Iq (μA)	SHDN Iq(μA)	Dimming	Package
SGM3758	White LED Drivers	Common Anode	1	200	1	PWM	TDFN-2×2-6L

选型表 - SGMICRO 立即选型

SGM3755 38V High Efficiency, Boost White LED Driver with PWM Dimming Control

型号- SGM3755YTN6G/TR,SGM3755

数据手册 - SGMICRO - REV. A. 1 - SEPTEMBER 2022 PDF 英文下载

【视频】圣邦微低功耗可直通降压转换器及多种高性能DCDC、ADC、DAC

型号- SGM42501,SGM61032,SGM42500,SGM61430,GM58603,SGM61032A,SGM61032B,SGM452,SGM5353,SGM450,SGM4027,SGM451,SGM58600,SGM58601

商品及供应商介绍 - SGMICRO PDF 中文下载

SGM DFAE Training Audio PA

型号- SGM4916,SGM4918A,SGM4918B,SGM4917,SGM470X,SGM4916A,SGM4918,SGM4916B,SGM61230,SGM37603A,SGM41519,SGM8743,SGM41513,SGM40666,SGM6602,SGM6029,SGM2820,SGM3756,SGM4703,SGM4700,SGM66051,SGM4917A,SGM3718,SGM4917B,SGM61020,SGM41573,SGM41527,SGM41528,SGM41523,SGM2571,SGM41526,SGM6612,SGM6611,SGM2059,SGM6610,SGM8910,SGM6614,SGM7229

商品及供应商介绍 - SGMICRO - 2023/3/25 PDF 中文下载