最大输出电流7A的DC-DC同步降压转换器ME3114，具备高精度电压基准0.6V±1.5%
MicrOne推出的ME3114是一颗DC-DC同步降压转换器，其输入电压范围为4V～18V，输出电压在0.6～12V范围内可调，最大输出电流可达7A。具有高精度电压基准：0.6V±1.5%，可以解决对供电稳定度要求高的设备供电问题。
本篇主要介绍ME3114的产品特性、优势以及应用场景。
ME3114典型电路图
产品特性
1. 频率可调
连接RT管脚与参考地之间的电阻可以设定开关频率，开关频率范围200kHz至1.6MHz，设定开关频率可以参考如下公式：
芯片也支持使用外部方波时钟信号设定开关频率，在此模式下，芯片内部PLL将开关频率同步到外部时钟频率，并且开关节点SW的上升沿与外部时钟的下降沿保持同步。
频率设置200kHz
频率设置500kHz
频率设置1600kHz
2. 可调软启动，支持预偏置输出
软启动电容上的控制电压上升至0.6V，输出电压也跟随上升至设定的电压，这样可以避免启动时较大的突入电流和输出电压过冲，软起动的时间设定可以参考如下公式：
其中，CSS为软起动电容，ISS为软起动充电电流（ISS约2.2μA）
软启动过程（VIN=12V，VOUT=3.3V，IOUT=3A）CSS=10nF
3. 全带载范围内超小纹波20mV
ME3114工作在PWM模式下，全带载范围内均可实现超小纹波，输出纹波在20mV。
开关波形（VIN=12V，VOUT=3.3V，IOUT=0A）
4. 快速负载响应
输出电压上冲144mV，输出电压下冲116mV@ IOUT：2A-6A
测试条件：VIN=12V，VOUT=3.3V，IOUT：2A-6A，R1=30k，C2=0.47nF
负载瞬态响应（VIN=12V，VOUT=3.3V，IOUT：2A-6A）
5. PGOOD针对输出欠压及过压的监控
PGOOD引脚具有输出状态指示功能，方便配合灵活的系统设计，此引脚通过检测FB电压来指示输出状态。对于PGOOD管脚，只需要加一个上拉电阻（100K左右），再加5V左右的上拉电压。
当VFB引脚电压小于参考电压Vref的92%或大于107%时，PGOOD引脚被拉低，当VFB引脚电压为Vref的94%至105%时，则该引脚被拉高。
当芯片处于过温保护、过压保护、EN接逻辑低或者软启动期间此管脚电压均会被拉低。
PGOOD指示输出电压状态，当VFB值达到预设值是，内部设置了约2ms的延迟时间。
通过使用使能输入（EN）和PGOOD信号延迟，可以对两个或更多电源进行电源时序控制。
PGOOD延迟时间
ME3114主要优势
1. 高效率
Vout=3.3V，VIN=5V，IOUT在1A~7A时，芯片效率能达到90%以上，效率最高能达到95%。
2. 高可靠性
ME3114设置逐周期限流保护：10A峰值限流可在过载情况下保护器件不受损害，8A谷值限流也可防止电流失控。此外，低压侧开关也有一个-3.5A的下降电流限制，当反向电流过大时，该限制会将其关闭。除了上述功能，还集成过温保护、输入欠压锁定、输出短路保护等功能来提升芯片的可靠性。
3. 外围模块高集成化
ME3114兼具大电流、高效率以及低Rdson，使其外围模块高集成化，并针对高密度应用进行了优化，外部元器件较为简单。ME3114开关频率是0.2MHz~1.6MHz,，可以选择高达1.6MHz的高开关频率，这样可以搭配较小的电感和电容，可以应用于需要小尺寸的方案，节省PCB板空间。
应用场合
ME3114提供18V/7A大电流解决方案，芯片兼具高效率、高稳定性以及外围模块高集成化，非常适用路由器、机顶盒、蓝光播放器、车载转接头、数字电视电源、笔记本电脑、以及各种高性能稳压器等。
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本文由Vicky转载自MicrOne（微盟电子公众号），原文标题为:ME3114的产品特性、优势以及应用，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。
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目录- 公司简介 TVS 半导体放电管 MOSFET 电源管理IC(PMIC) 质量管理体系、RoHS认证证书
型号- P4SM6.8CA-200A,CM2302C,CM2302B,CM2302A,AU3321D5,SMDJ5.0CA-220CA,SMAJ5.0A-550A,SMF5.0A-220CA,CM3416E,3.0SMC6.8CA-250CA,AU1801P1,CM3134EW,CM3404B,CMN3018S8,AR0501S2,CM2301G,AU1221P1,AU1221P0,CM2301C,CM60N10AGB,CM2301B,CM2301A,AR0534P3,CMP2033S8,AR0521M0,AR0521M1,CMN6075S9,S4MP5.0CA-170A,1.0SMBJ6.8CA-530A,P4SM6.8A-200CA,ASD08C,5.0SMDJ11A-220A,AR0501P0,CMN2006F3,CMN6009S8,CM65R360_F,AU0701D5,ASD12,ASMBS10A-43A,AR0524P5,AU2401D5,AR0501P1,AU0771P1,CMN3205B,1.5SMC6.84-600A,AR1203P3,SMBJ5.0A-550CA,CM65R360_P,CM60R2K2_D,5.0SMDJ11CA-220CA,SMCJ5.0A-550A,3KP5.0A-220A,AST05,CM05N50U,CMN251R0F5,AU0541P1,ASD08,AR0502S2,AR0502S1,AU2581P1,CM60R2K2_U,CMO4N65U,CMO4N65P,ASD05,ALCDA15C-1,3KP5.0A-220CA,AR0502S5,ASD12CL,CMN2006U,AR0541D3,5KP5.0A-220CA,CMO4N65F,P4SMA6.8A-600CA,CMO4N65D,P4SMA6.8CA-600CA,SMBJ5.0CA-550A,1.5SMB6.8CA-250A,AU1231P1,S4MP5.0A-170A,5.0SMDJ11CA-220A,AR0502P6,CM9435,AR0502P1,AR0502P2,AU0521P1,ASD24CL,AU0521P0,15KP5.0A-220CA,SMBJ5.0CA-550CA,AU0761M1,AU0761M0,AU3381P1,AU0861P0,AU1232S5,CM65R850_F,CMN3205P,CM65R850_P,AU3611P1,CM2305B,CM2305A,AU0561D5,CM2N7002DW,AU0522S2,ASD36CL,AU0581P1M,AU1501D5,3.0SMC6.8A-250A,AU0581P1H,AU1811P1,AU2881D3,SMB6.8A-250CA1.5,AR3311D3H,ASD05L,AU0521PZ,P4KE6.8A-600A,CM2304A,ASD05C,CM65R850_U,AR1201P1,CM60R150_F,CM60N10AGP,CM60R150_K,AU0533S1,P6KE6.8A-600A,AUO811P1,AR0504S6,AU1221P1L,SMB15.J5.0A-180CA,P6SMA6.8CA-440CA,AR0504S2,AR0504S3,AU0531P1,AU0521S5,AU3304P7,CM1601,CM1602,CM3415E,ASM05C,CM2N7002,CM2324,P6SMA6.8A-440A,CM2326,ASM05H,AU1204S2,ASD15CM,CMN3013F3D,P4SM6.8CA-200CA,1.5KE6.8A-600CA,CMBSS84,AR2504P9,AU3311P0,P6SMB6.BA-600CA,AR2504P8,AU1881P1,AU3311P1,AU0771D5,CM3400,CM2310,AR2504P3,ASD24L,ASD12L,CM2312,CM3401,ASD36L,ASD12C,AU3351D5,AU2512PT,AU1231D5,AU0511P0,AU0521M0,AU0511P1,ASD36C,AU0524S2,ASD24C,CM2615E,AR3354S2,AU0521M1,SMDJ5.0CA-220A,CM3407,CM100N15GB,LC03-3.3,ALCA24C-1,AU0511PF,AU0551D5,CM2616E,AU0522P1,ALCDA12C-1,CMN3003B,1.0SMBJ6.8CA-530CA,CM2N7002K,SMDJ5.0A-220A,CM8205S,CM4407,AR0531P1,AU1201P0,AU1201P1,ASD05CL,AR0554P3,AR1211P1,AR2411D3,ASM1235,AU3321P0,ASR3.3,S4MP5.0CA-170CA,CM40P03U,AU3321P1,AR0521P1,AR0534S2,AR0511S1,AU0531D5,CMN3010F3,AR0521P0,AU0531D9,AU0504S6,AR0521P6,AU4581P1,CM65R2K6_D,AR2421D5,CMN4006F3,LC03-6,AU0502P1,AU0514PD,SMCJ5.0CA-550CA,CMN3004U,CM65R2K6_U,ASM36C,ASM24C,ASM12C,AU3401T1,ASM12H,CMN401R0F5,P4SMA6.8CA-600A,5KP5.0A-220A,P2SM6.8CA-250CA,AU3301P1,AU0721P1,CM60N10AGF5,AU0721P0,P4SMA6.8A-600A,CM2300,AR2502S8,ASM15C,AU1211P1,ASD33L,CM65R550_F,ASMF05C,CM2303,ASMF05L,AU1224S6,ASM15H,AU0521P1L,ASD33C,AR0544MP,CM65R550_P,AU0501P0,AU0501P1,SMDJ5.0A-220CA1.0,AR0534P9,CM2305,ASL05C,CM7319S8,AU0731P1,CM4953,AR3321P0,AR3321P1,AU0524P7,AU0541D5,AU0512P1,AR1255P4,P6KE6.8CA-600A,5.0SMC13A-250CA5.0,CM4407AF3,CMN6009F5,AR4501D9,CM65R190_P,ASM15,AR0551S2,ASM12,SLVU2.8-4,ASM33C,5.0SMC13A-250A,SLVU2.8-8,AU0506S8,ASM33H,AR3311P6,CMN4004F5,CM65R190_F,AU1201D5,CM65R190_K,ASM05,AR0507M8,AU0521D5,ASD40L,AU0521D9,SMBJ6.8A-530CA1.5,AR0508PB,ASD40C,SMCJ5.0A-550CA,ASL05-36,AU0521D3,CM3134E,AU2421P1,CMN3008F5,AU0505S2,SMBJ5.0A-550A,SMB15.J5.0A-180A,ASM33,SMB10J5.0CA-440A,ASM36,AR0552S2,SMA6J5.0CA-220CA,CM3134T,AU0505S6,SMC6.84-600CA,SMCJ5.0CA-550A,5.0SMC13CA-250A,CM70R400_P,CM3134K,CM1602S,AR0921P1,CMP3031F2,CM70R400_F,CMP3049S8,1.5KE6.8A-600A,AR8001S2,1.5SMC6.8C4-600A,P6SMB6.BCA-600CA,ASM24,SMAJ5.0CA-550A,SMA6J5.0CA-220A,CMN4008LU,CM1601S,AR0508MP,AU0504S2,CM10N65F,P2SM6.8A-250CA,AU0504S5,CM10N65P,ASR70,AU1521P1,CMN6075AS9,AU1521P0,SMB15.J5.0CA-180A,AUO701PIL,AU2411P1,CM60N10GF5,15KP5.0CA-220CA,AR3324P5,CM60R125_K,AU2521P0,AU2521P1,CMO5N50D,CMN3012S8,AR1511D3,P4KE6.8A-600CA,P6KE6.8A-600CA,3KP5.0CA-220A,SMB10J5.0CA-440CA,5KP5.0CA-220A,AR0524P5L,1.5SMB6.8A-250A,CM60R125_F,ASDO8CL,1.5KE6.8CA-600CA,CM60R090_K,AU0511D5,AR3304S2,AR0541P1,AU0511D9,P2SM6.8CA-250A,AR0554S8,AR1821P1,1.0SMBJ6.8A-530A,AU1221D3,CMN6086S8D,AU1221D5,P6SMA6.8A-440CA,AU0581P1,AR0821P1,ASD40CL,ASDOBL,SRV05-4E,AU2804S8,CM3139EW,CM4435,SMF5.0A-220A,ASRV05-4,CM07N80F,AU0701P1,CM07N80P,AU2401P1,CMN2006S8,AU3601D5,1.5SMB6.8CA-250CA,CMN6006S8,AR0504P3,AR0811D3,AR0504P4,5KP5.0CA-220CA,AU3601P1,AU0721D5,AR3321D5,S4MP5.0A-170CA,1.5KE6.8CA-600A,P6SMB6.BA-600A,AU0791P1,SMF5.0CA-220A,AU0561P0,AU0561P1,AR2421P1,SMA6J5.0A-220CA,AR0514MP,CMN4006S8,AR0521D5,ASMF05,AR0521D3,AR0504P9,AR0504PC,AR0521D9,CMN3004F5,P6SMB6.BCA-600A,AU0506M8,CM8205,5.0SMC13CA-250CA,P2SM6.8A-250A,LC03-3.3L,AR0504MP,AU3301D5,AU3301D3,SMB15.J5.0CA-180CA,AR0511D3,AU1821P1,ASD1524,CM12N65F,3.0SMC6.8CA-250A,CMBSS138,CM12N65P,SMF5.0CA-220CA,AU0501D5,P6KE6.8CA-600CA,AU1211P1L,AR3304P9,AR3304P8,SMDJ11A-220CA,AR3304P5,CM65R280_P,1.5SMC6.8C4-600CA,P4KE6.8CA-600CA,AR3304P3,AU0501D1,AU1521D5,CM65R280_F,AR3603P3,CMN3003F5,15KP5.0A-220A,P6SMA6.8CA-440A,AR1521P1,CMO4N80U,3KP5.0CA-220CA,ASD33,CM07N65F,CM07N65D,AR7004S2,SMAJ5.0A-550CA,ASD36,CMO4N80D,CM07N65P,SMB10J5.0A-440A,SMAJ5.0CA-550CA,CM07N65U,15KP5.0CA-220A,AU3351P1,AST24,AR3306PA,CM70R1K1_U,AU1261P1,SRV05-4,CMN2342,ASD24,CM70R1K1_D,AU0561M1,AR3311D3,AR0506PA,AU0551P1,AR1501P1,AU0561M0,CMN3006F3,AR121
微盟电子参展国产半导体应用技术大会，展示AC-DC、DC-DC和LDO三大产品线应用
MicrOne微盟电子参展国产半导体应用技术大会，展示AC-DC、DC-DC和LDO三大产品线，器件广泛用于充电器，适配器，PD快充，开放电源，反激式二次侧整流，反激电源，PD，机顶盒等领域。
原厂动态 发布时间 : 2024-07-06
SC1101x High Efficiency 1.5MHz 1A Synchronous Step Down Converter Datasheet
型号- SC1101X,SC1101NSTR-I,SC1101SSTR-I
电子商城
现货市场
服务
可定制电感最大电流100A，尺寸最小7 x 7 x 3.0mm到最大35 x 34 x 15.5 mm，工作频率100KHZ ~ 2MHZ，感值范围：0.15 ~ 100uh；支持大功率电感，扁平线电感，大电流电感，高频电感，汽车电感器，车规电感，一体成型电感等定制。
最小起订量： 5000 提交需求>
可烧录IC封装SOP/MSOP/SSOP/TSOP/TSSOP/PLCC/QFP/QFN/MLP/MLF/BGA/CSP/SOT/DFN；IC包装Tray/Tube/Tape；IC厂商不限，交期1-3天。支持IC测试（FT/SLT），管装、托盘装、卷带装包装转换，IC打印标记加工。
最小起订量： 1pcs 提交需求>
授权代理品牌：集成电路
授权代理品牌：分立元件
授权代理品牌：接插件及结构件
授权代理品牌：部件、组件及配件
授权代理品牌：电源及模块
授权代理品牌：电子材料
授权代理品牌：仪器仪表及测试配组件
授权代理品牌：电工工具及材料
授权代理品牌：机械电子元件
授权代理品牌：加工与定制
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