【应用】国产低功耗升压DCDC SGM6603用于激光测距望远镜，转换效率可达90%

时间： 2022-10-05 来源：世强

技术问答

激光测距望远镜就是通过激光二极管发射激光，光电二极管接收激光信号，通过计算信号从发射到接收所用的时间，从而计算出观测者到目标的距离，某客户在设计激光测距望远镜时，采用3V锂电池供电，由于后续的系统有更高压的需求，客户打算将3V升压到5.5V给其它器件供电，给客户推荐了圣邦微的升压DCDC SGM6603。

应用框图如下：

SGM6603主要有以下优势：

输入电压0.9V-5.5V，输出电压可调，最高输出电压可达5.5V，能满足客户输入输出需求。
功耗低，SGM6603静态电流仅为30μA，关断电流低至1μA，可以延长电池的使用寿命。
SGM6603A的转换效率可达90%，工作模式为强制PWM模式，即使在轻负载下也保持着1.2MHZ恒定的开关频率，可以减少输出纹波和避免噪声干扰。
采用SOT23-6的小封装设计，减少了PCB板的面积，更有利于产品的小型化设计。

综上所述，SGM6603具有低功耗，高效率，小封装等特点，可以满足客户激光测距望远镜系统供电设计需求。

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ETEK（力芯微）电源IC/信号&传感IC/显示屏&LED驱动/逻辑IC&MOSFET/车规产品选型指南

描述- 力芯微是一家主营电源管理IC的芯片设计公司，总部位于江苏无锡，周边配套了完整的芯片产业链，是国家重要的集成电路产业化基地。力芯微以市场需求和技术前沿趋势为导向，持续研发全系列、高品质的电源管理芯片，并持续布局信号链芯片等其他类别产品。目前，基于在手机、可穿戴设备等应用领域的优势地位，力芯微已经成为消费电子市场主要的电源管理芯片供应商之一，主要客户为三星、小米、LG、海尔等知名厂商。

型号- ET74AUP1G17,ET95152,ET85904,ET3138,ET74AUP1G14,ET3137,ET9919B,ET9611Y,ET1637,ET74LVC1G14,ES6V3DPX,ET74LVC1G17,ET85902,ET8141,ES12DFX,ET85901,ET74HC04,ET74AUP1G07,ET64B16V,ES30P4N3HX,ET1624,ET74AUP1G08,ET74AUP1G02,ET1620,ET74AUP1G04,ET9902,ET516XXYB,ET74AUP1G00,ET9918B,ET64C16YAM,ET8134,ES55DFHX,ES15DFCX,ET74HC573,ET81311,ET20135,ET9580,ET93010A,ET8131,ET8132,ET74HC14,ET20170,ET74AUP2G07,ET6625,ET6623,ET64B16VAM,ET74AUP2G04,ET74AUP1G32,ET74AUP2G02,ES332R2PA,ET74AUP1G34,ET2016B,ET1616,ET5A5ADJZB,ET2016C,ET8123,ET74LVC1G32,ET2016A,ET74LVC1G34,ET74LVC2G02,ET85002,ET82099,ET85001,ET74LVC2G04,ET6622,ET6621,ET74LVC2G07,ET85004,ET7H2XX,ET8121,EM02N08H,ET4557,EM02N08F,ET3712A30XX,ES03DMSBHX,ET2016,ET9612Y,ET74HC238,ET5HAXX,ET9563,ET74LCX244,ET6416Y,ET5014AM,ET633XXYB,ET74LVC2G14,ET74HC595,ET20155,ET74LVC2G17,ET5B0XX,ET5H1XX,ET9562,ET64C16Y,ET5914,ET3856,ET64C16V,ET6326,EMQ40N03T1,ET5H6ADJ,EM02N70M,ET5917,ETQ6H3XX,ETQ8134M,EMR13N03M,ET9523C,ET85304,ET3176,ET85302,ET85301,ES05DMSBX,ET48751,ET48752,ET3172,ET3715A30,ET5904,ET74AUP2G17,ET95101,ETK6201,ET74AUP2G14,ET3720,ET5907,ET6224R,ET74LVC2G34,ET9383Y,ET3167,ET3168,ET2016X,ET3166,ET5223,ETQ5A0XX,ES26P4M,ET3164,ET3161,ET20175,ET20176,ET3713,ET515DXXYB,ET74LVCH8T245,ET1651,ET3159,ET5A0XXYB,ET9818,ET3719,ET9819,ET3716,ETQ6H2XX,ET20176HY,ET9513C,ET8280,ET3157,ET5014L,ES15DUCFM,ET3153,E33DFB,ET3718AXX,ET634XXYB,ET5H7XX,ET1640,ET5H6ADJAM,ET74AUP2G34,ET553XX,ET6408Y,ES79DFVXM,ET358,ET9650M1,EMQ40DN03T1,ET1117,ET5A2ADJZB,ET3895,ET3896,ET93011,ETMC3021,ET8307,ES052R2PL,ES09DFX,ET9631,ET74HC165,ES4850DFHX,ET74HC164,EM08DN12Z,ET9515,ET9640A,ET85502,ET85501,ETM3401,ET8215AM,EM03N06FX,ET85504,E25DFB,ET3712A45BDCLS,ET4857,CD1628,ET5A0ADJ,ES334RTBP,ET20176HAM,ET553ADJ,ES05DUCFM,ET2016XAM,ET74LVC1G126,ET74LVC1G125,ET631XXYB,ET8528,ET5C108,ES24P4N3,E05DFBH,ES05DPX,ET6226,ET1210,ET4712A70,ET5014,ET6312B,ET74AUP1G126,ET74AUP1G125,ET5H5XX,ET1206,ET9555M,ET7429,ET1202,ET551XX,ET6H3XX,ET20176H,ET1629A,ET1629B,ET9381Y,ET7304,ET1629C,ET7303,ET3RL02,ET7302,ES334RTPH,ET2095,ET533XXAM,ET820982,ES3314DUCFBM,ET82097X,ET74HC245,ET542XXY1B,ET6280,ET3148A,ET7H1XX,ET6034AY,ET3712A45BSCLD,ET9792,ET533XX,ET5H2XX,ET7805,ET515XXYB,ET540XXY1B,ES45DPF-BHX,ET3565,ES30P4N3LX,ET531XXYB,ES20DFX,ET8210,ET74HC138,ET7480,ET8215,ET8216,ET9668,ET2110,ET6038,ET6037,ET9639L,ET3562,ET2102,EMR12N03T1,ET2468,EM06N30M,ET2467,ET2104,ET8330A,ES26P4NA,ET5228H,ETQ74LVCH8T245,ET8202,ET8203,ET85601,ET632XXYB,ET3158A,ET85604,ET6144,ET6143,EM03N09FX,ET85602,ET6142,ET557XX,EMR15N03M1,ET6935,ET6934,ET74LVCSZ17,ET7228,ET9528,ET9640,ET7460,ET74LVC1G00,ET9540CL,ET6218R,ET74LVC1G02,ES10DPXM,ET74LVC1G04,ET6930,ET5A3ADJZB,ET536XXYB,ES45D3HP,ET74LVC1G07,ET74LVC1G08,ET7222

选型指南 - ETEK - 2024/4/29 PDF 英文下载

LDO和DC/DC有哪些区别？

我们仅从优缺点来做简单的分析 LDO优点：稳定性好，负载响应快。输出纹波小。缺点：效率低，输入输出的电压差不能太大。 DC/DC：直流电压转直流电压。严格来讲，LDO也是DC/DC的一种，但目前DC/DC多指开关电源。具有很多种拓朴结构，如BUCK，BOOST。等优点：效率高，输入电压范围较宽。缺点：负载响应比LDO差，输出纹波比LDO大。可见LDO只能是降压，DCDC 有升压，降压，升降压多种结构。由于MOSFET的导通电阻很小，因而它上面的电压降非常低。如果输入电压和输出电压很接近，最好是选用LDO稳压器，可达到很高的效率。所以，在把锂离子电池电压转换为3V输出电压的应用中大多选用LDO稳压器。虽说电池的能量最后有百分之十是没有使用，LDO稳压器仍然能够保证电池的工作时间较长，同时噪音较低。如果输入电压和输出电压不是很接近，就要考虑用开关型的DCDC了，应为从上面的原理可以知道，LDO的输入电流基本上是等于输出电流的，如果压降太大，耗在LDO上能量太大，效率不高。 DC-DC转换器包括升压、降压、升/降压和反相等电路。DC-DC转换器的优点是效率高、可以输出大电流、静态电流小。随著集成度的提高，许多新型DC-DC转换器仅需要几只外接电感器和滤波电容器。但是，这类电源控制器的输出脉动和开关噪音较大、成本相对较高。总的来说，升压是一定要选DCDC的，降压，是选择DCDC还是LDO，要在成本，效率，噪声和性能上比较。

技术问答发布时间 : 2024-10-30

洺太（SUNTEK）电源管理IC选型指南

目录- 公司及产品线介绍应用案例 LDO DC-DC Charger IC & OVP Miscellaneous Ics

型号- SUL60512,SK6264B,SK6252C,SK6667,SK62094,SK6662,SK6663,SK6021,SK62099,SK61287,SK6023,SK62521,SK6018B,SK6018C,SK18134,SK78XX,SK61391,SK6673,SK6152,SK6153,SK4013,SK6615C,SK6117P,SK6513S,SK6086,SK6001,SK4066,SK6661S,SK6254B,SK6253B,SK1521,SUL62029,SK6253E,SK6017,SK6018,SK6X131,SK6019,SK6013,SK6014,SK6015,SK6011,SK6012,SK6650,SUL6018,SK61605,SK6807,SK6627,SK4566,SK6692E,SK68313,SK6620,SK68310,SK62691,SK6014S,SK62601,SK62603,SK62602,SK62604,SK62606,SK6648D,SUL6001,SK6619,SK6216H,SK6637,SK6116,SK6117,SK6513,SK4054,SK6630,SK6632,SK4051,SK78LXX,SK6647A,SK6837B,SUL6113,SK6255B,SK1553,SK6208,SK6605,SKD2803,SK6206,SK6684,SK61381,SK2485,SK6681,SK6683,SK6152S,SKD2003,SK6693E,SK4556,SK4555,SK69134,SK4554,SK6215,SK6216,SK6613,SK4558,SK4153,SK6059,SK4151,SK6053,SK6054,SK6692,SK6055,SK6693,SKR809,SK6051,SK6052,SK6690,SK1826A,SK317,SK78MXX,SK62618,SK1836,SK4056B,SK4056C

选型指南 - 洺太 - 2023/8/5 PDF 中文下载

【经验】DCDC升压芯片SGM41285的硬件电路设计要点介绍

圣邦微的SGM41285作为一款DCDC升压芯片，输入电压（VIN）为2.8V~5.5V，具有宽范围的输出电压（VIN+5V）~70V，输出功率最高300Mw，高压侧配备了高速可调限流的电流监测器，提供500nA~4mA的高精度电流监测，适用于光模块APD的偏置和监测应用。本文就给读者们介绍该产品在硬件电路设计时的几点注意事项。

设计经验发布时间 : 2019-09-26

JW JOULWATT转换器&控制器&电源模块&LNB电源选型表

JW JOULWATT提供以下参数的控制器、电源模块、LNB电源、降压转换器、DCDC 转换器、升压转换器，负载开关，USB 开关，电子保险丝，低导通电阻电子保险丝，高侧热插拔控制器，合路控制器和理想二极管，低侧双通道理想二极管控制器，LDO，车规级 LDO，单电源开关选型，输入电压：0.7V~150V，反馈电压：0.45V~5.1V