Like any low-dropout regulator, the external capacitorsused with the RT9193 must be carefully selected forregulator stability and_performance. Using a capacitorwhose value is > 1μF on the RT9193 input and_the amountof capacitance can be increased without limit. The inputcapacitor must be located a distance of not more than0.5 inch from the input pin of the IC and_returned to aclean analog ground. Any good quality ceramic ortantalum can be used for this capacitor. The capacitorwith larger value and_lower ESR (equivalent seriesresistance) provides better PSRR and_line-transientresponse. The output capacitor must meet bothrequirements for minimum amount of capacitance andESR in all LDOs application. The RT9193 is designedspecifically to work with low ESR ceramic output capacitorin space-saving and_performance consideration. Usinga ceramic capacitor whose value is at least 1μF with ESRis > 25mΩ on the RT9193 output ensures stability. TheRT9193 still works well with output capacitor of othertypes due to the wide stable ESR range. Figure 1 showsthe curves of allowable ESR range as a function of loadcurrent for various output capacitor values. Outputcapacitor of larger capacitance can reduce noise andimprove load transient response, stability, and_PSRR. Theoutput capacitor should be located not more than 0.5inch from the VOUT pin of the RT9193 and_returned to aclean analog ground.Figure 1Bypass Capacitor and_Low NoiseConnecting a 22nF between the BP pin and_GND pinsignificantly reduces noise on the regulator output, it iscritical that the capacitor connection between the BP pinand_GND pin be direct and_PCB traces should be as shortas possible. There is a relationship between the bypasscapacitor value and_the LDO regulator turn on time. DCleakage on this pin can affect the LDO regulator outputnoise and_voltage regulation performance.Enable FunctionThe RT9193 features an LDO regulator enable/disablefunction. To assure the LDO regulator will switch on, theEN turn on control level must be greater than 1.2 volts.The LDO regulator will go into the shutdown mode whenthe voltage on the EN pin falls below 0.4 volts. For toprotecting the system, the RT9193 have a quick-dischargefunction. If the enable function is not needed in a specificapplication, it may be tied to VIN to keep the LDO regulatorin a continuously on state.Thermal ConsiderationsThermal protection limits power dissipation in RT9193.When the operation junction temperature exceeds 165°C,the OTP circuit starts the thermal shutdown function turnthe pass element off. The pass element turn on againafter the junction temperature cools by 30°C.For continue operation, do not exceed absolute maximumoperation junction temperature 125°C. The powerdissipation definition in device is :PD = (VIN?VOUT) x IOUT + VIN x IQThe maximum power dissipation depends on the thermalresistance of IC package, PCB layout, the rate ofsurroundings airflow and_temperature difference betweenjunction to ambient. The maximum power dissipation canbe calculated by following formula :PD(MAX) = ( TJ(MAX)? TA ) /θJAWhere TJ(MAX) is the maximum operation junctiontemperature 125°C, TA is the ambient temperature andtheθJA is the junction to ambient thermal resistanc
供应RICHTEK品牌 RT9193-28GB 原装现货联系QQ1640951075
时间:2020-12-9 17:42:00
推荐新闻
- OP77AJ/883 运算放大器
- OP400AY/QMLV 超低失调电压精密运算放大器
- OP400AY/883 贸泽微军用品质,良心价格
- ADG608BNZ 多路复用开关 IC
- 毅创辉电子代理 MTFC2GMDEA-0MWT
- 毅创辉电子代理 MTFC8GACAAAM-4MIT
- 毅创辉电子供应 MTFC8GLDEA-1MWT
- 毅创辉电子供应 H5PS1G63EFR-Y5C-C
- STW40N90K5
- B58703M1103A001
- DDR存储器 K4B4G1646E-BYMA 中文资料,价格咨询,数据手册,现货供应
- K4B4G1646E-BYMA现货热卖 徐小姐13714450367
- OVM6946-RAJA 中文资料,PDF数据手册,询价联系
- SDP1108-R压力传感器,中文资料,数据手册-询价请联系
- AR0230CSSC00SUEA0-DRBR图像传感器,现货供应,中文资料,数据手册
- IDT821034DNG中文资料PDF采购批发
- UPD720201K8-701-BAC-A
- 供应NCE4060K中文资料
- UPD720201K8-701-BAC-A价格深
- UPD720201K8-701-BAC-A数据手册中文资料PDF资料原装现货
该企业其它新闻
- 供应INFINEON品牌 IFX54441EJV33XUMA1 原装现货21+联系电话18126164176
- 主营INFINEON品牌 TLE9263QX
- 供应NXP品牌 SPC5744BK1AVKU2 原装现货联系微信18126164176
- 供应TI品牌 TPS25200DRVR 原装现货联系QQ1640951075
- 供应TI品牌 TPS25200DRVR 原装现货联系QQ1640951075
- 供应ALTERA/阿尔特拉品牌 10CL006YE144C8G 原装现货联系QQ:1640951075
- 供应ST品牌 STM32F407ZET6 原装现货联系QQ1640951075
- 供应ON品牌 NCP1608BDR2G 原装现货联系QQ1640951075
- 供应东芝品牌 THGBMDG5D1LBAIL 原装现货联系QQ1640951075
- 供应NEXTCHIP品牌 NVP6124B 原装现货联系QQ1640951075
- 供应品牌国名技术 N32G455VEL7 原装现货联系QQ1640951075
- 提供JOULWATT 品牌JW5116F原装现货联系QQ2977413990
- 供应TTONTEK品牌 TTP224B-BSBN 原装现货联系QQ1640951075
- 供应ALTERA品牌 EP4CE6F17C8N 原装现货联系QQ1640951075
- 供应NXP品牌 S9S08DZ60F2MLH 原装现货联系QQ1640951075
- 供应NUVOTON/新唐品牌 N76E003AT20 原装现货联系QQ1640951075
- 供应ALTERA品牌 10CL006YE144C8G 原装现货联系QQ1640951075
- 供应XILINX品牌 XCZU4CG-1FBVB900E 原装现货联系QQ1640951075
- 供应ST品牌 STM32F427VGT6 原装现货联系QQ1640951075
- 供应KEMET品牌 T491C226K025AT 原装现货联系QQ1640951075
型号查询 | 功能描述 | 生产厂家&企业 | LOGO | 操作 |
---|---|---|---|---|
300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator | RichTekRichtek Technology Corporation 立锜科技立锜科技股份有限公司 | |||
300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator | RichTekRichtek Technology Corporation 立锜科技立锜科技股份有限公司 | |||
300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator | RichTekRichtek Technology Corporation 立锜科技立锜科技股份有限公司 | |||
300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator | RichTekRichtek Technology Corporation 立锜科技立锜科技股份有限公司 | |||
300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator | RichTekRichtek Technology Corporation 立锜科技立锜科技股份有限公司 | |||
300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator | RichTekRichtek Technology Corporation 立锜科技立锜科技股份有限公司 | |||
300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator | RichTekRichtek Technology Corporation 立锜科技立锜科技股份有限公司 | |||
300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator | RichTekRichtek Technology Corporation 立锜科技立锜科技股份有限公司 | |||
300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator | RichTekRichtek Technology Corporation 立锜科技立锜科技股份有限公司 | |||
300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator | RichTekRichtek Technology Corporation 立锜科技立锜科技股份有限公司 |
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
RICHTEK/立锜 | 25+ | SOT23-5 | 4400 | 全新原装现货特价销售,欢迎来电查询 | |||
RT-立绮 | 2013+ | SOT23-5 | 16998 | 专业代理RT-立绮系列IC | |||
RICHTEK/立锜 | 2023+ | SOT23-5 | 6893 | 十五年行业诚信经营,专注全新正品 | |||
RICHTEK | 22+23+ | QFN | 8000 | 新到现货,只做原装进口 | |||
RICHTEK/立锜 | 24+ | SOT23-5 | 9000 | 只做原装,欢迎询价,量大价优 | |||
RICHTEK/立锜 | 24+ | SOT23-5 | 30000 | 房间原装现货特价热卖,有单详谈 | |||
RICHTEK立锜 | 24+ | SOT23-5 | 6000 | 全新原装深圳仓库现货有单必成 | |||
RICHTEK | 2025+ | SOT23-5 | 5185 | 全新原厂原装产品、公司现货销售 | |||
RTCHTEK | 25+ | SOT23-5 | 18000 | 原厂原装,价格优势 | |||
RICHTEK(台湾立锜) | 24+ | SOT-23-5 | 15048 | 原厂可订货,技术支持,直接渠道。可签保供合同 |