【应用】车载LDO BD450M2WEFJ应用于汽车电子换挡器,具有较小负载调整率
疫情的持续,导致许多芯片厂商生产被打乱,尤其是在汽车芯片供应现阶段非常紧张的,其中车规的电源类芯片更是短缺。近期有许多客户为保证满足车厂生产需求,寻找可以替代的车规LDO芯片。有个做换挡器的客户,需要具有使能控制功能,并且负载调整率小的LDO,结合使用要求,推荐罗姆的车规LDO BD450M2WEFJ,其满足于客户的使用要求,并且还有比较好的交期。
电子换挡器其系统框图如下图1所示,系统采用MCU作为控制中心,通过PWM接口控制三极管驱动LED点亮,电源采用带有使能功能的LDO为LED供电,这样可以最大限度的减少汽车电池的使用,这个系统的控制通对LIN接口与车机系统连接通。
图1 电子换挡器原理框图
罗姆BD450M2WEFJ采用了其先进的制作工艺,主要特点如下:
1.工作温度范围:-40℃~150℃
2.输入电压范围:3.0V到42V
3.最大输出电流:200mA
4.静态电流:40μA
5.电流在10mA到100mA变化,输出电压最大变化30mV
6.输出使能,可以最大限度的降低损耗
7.符合AECQ-100
罗姆BD450M2系列有两个版本,带有使能版本的是尾缀中包含W的(如:BD450M2WEFJ),芯片的CTL引脚作为控制引脚;不带使能的版本是没有CTL引脚的,如果在供货紧缺的环境中也可以使用不带使能的临时应急,图2是BD450M2系列两个版本接线图。
图2 BD450系列带使能和不带使能接线
罗姆BD450M2系列封装包括HTSOP-J8和SOT223-4,非常适合换挡器这类小体积的产品使用,其封装如下图3所示,最小占用面积5mm*6mm。
图3 罗姆BD450系列封装
综上所述采用罗姆的LDO是完全满足车载LDO的使用要求的。
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BD4xxM2-C/BD4xxU2-C系列200-mA 3.3 V或5.0 V输出LDO稳压器
描述- 该资料介绍了BD4xxM2-C / BD4xxU2-C系列低静态电流稳压器,适用于汽车和其他高电压应用。这些稳压器具有45伏绝对最大电压、±2%的输出电压精度(典型值为3.3V或5.0V)、200毫安输出电流和40微安(典型值)的电流消耗。它们还具备过流保护和热关断保护功能。
型号- BD450U2WEFJ-C,BD450M2FP3-CE2,BD433U2EFJ-CE2,BD450M2WEFJ-CE2,BD4XXM2-C SERIES,BD450U2EFJ-CE2,BD450M2WEFJ-C,BD4XXM2-C,BD450M2EFJ-CE2,BD433U2WEFJ-C,BD433M2WEFJ-C,BD433M2FP3-CE2,BD433M2WEFJ-CE2,BD433U2WEFJ-CE2,BD450M2WFP3-CE2,BD450M2FP3-C,BD4XXU2-C,BD450M2WFP3-C,BD433M2WFP3-C,BD433M2EFJ-CE2,BD433M2FP3-C,BD433M2WFP3-CE2,BD450U2WEFJ-CE2,BD450M2EFJ-C,BD433U2EFJ-C,BD4XXM2WEFJ-CE2,BD433M2EFJ-C,BD4XXU2-C SERIES,BD450U2EFJ-C
TO-247-4L半桥评估板产品规格
描述- 本资料为ROHM公司生产的TO-247-4L半桥评估板的规格说明书。内容包括安全注意事项、产品概述、主要特性、订购规格、功能框图、电气特性、原理图、物料清单、PCB布局和注意事项。资料强调了使用该评估板时的安全操作和注意事项,并提供了详细的电气参数和功能描述。
型号- P02SCT3040KR-EVK-001,RB168VAM150TR,LTR18EZPFLR470,BD450M2WEFJ-CE2,MCR01MZPF2201,MCR18EZPJ000,MCR01MZPF6801,TFZVTR15B,MCR01MZPF6802,MCR01MZPF4702,CGA4J1X7S1E106KT0Y0N,LTR18EZPF1500,73415-2061,2SCR523EBTL,SM-31W1KOHM,2SAR523EBTL,BU4S11G2TR,SML-D12U8WT86Q,BM6101FV-CE2,MCR01MZPF1502,MCR01MZPF1501,KTR25JZPJ105,OSTTE100104,CGA2B2C0G1H101J050BA,TFZVTR22B,PWR4412-2S-D-R0050F,SCT3040KR,SMTE3-01E-Z,CGA3E3X7R1H474K080AB,MCR03EZPJ000,7808,HK-2-G,B32776G1106K000,CGA9P1X7T2J474M250KC,C5750C0G3A333J280KC,TFZVTR2.0B,CGA3E1X7R1V105K080AC,CGA3E2C0G1H102J080AA,CGA4J1X7R1V475K125AC,BD7F200EFJ-LB2,929647-02-03-EU,SM-3TW10KOHM,SM-31W1KOHM102,C3216X5R1E226M160AB,RF302LAM2STR,RSR030N06TL,EE2225 04398-T256,ESR18EZPJ3R3,ESR25JZPJ100,SML-D12P8WT86L,CGA2B3X7R1H104K,LTR10EVHFSR047,MCR01MZPJ000,LTR100JZPJ683,CGA5L3X5R1H106K160AB,QPC02SXGN-RC,CGA2B3X7R1H104K050BB,RFN1LAM7STR,MCR01MZPF3902,DUT,MCR10EZPJ101,MCR10EZPF2200,MCR01MZPF1002,RB160MM-40TR,MCR01MZPF3301,MCR18EZPJ472,MCR10EZPF4700,RB160VAM-60TR,MCR10EZPF4701,SM-3TW10KOHM103,OSTTE020104,MCR01MZPF3901,BU4S584G2TR,MCR01MZPF8201,BU4SU69G2TR,S-19700A00A-E8,MCR01MZPF10R0,PCB002P REV.D
【产品】输出电压精度±2%的低静态稳压器BD4xxM2-C/U2-C,输出电流达200mA
BD4xxM2-C/BD4xxU2-C系列产品是ROHM推出的低静态稳压器,具有45V绝对最大电压,输出电压典型值3.3V或5.0V、200mA输出电流和典型值40μA的电流消耗;非常适合需要直接连接到电池和低电流消耗的应用。
200 mA 3.3-V或5.0-V输出LDO稳压器BD4xxM2-C系列
描述- 该资料介绍了ROHM公司的BD4xxM2-C系列低静态电流稳压器。这些稳压器具有45伏绝对最大电压、±2%的输出电压精度(典型值为3.3V或5.0V)、200毫安输出电流和40微安(典型值)的电流消耗。它们适用于需要直接连接到电池且电流消耗低的场合。
型号- BD450M2FP3-CE2,BD450M2FP3-C,BD4XXM2FP3-C,BD450M2WEFJ-CE2,BD450M2WFP3-C,BD433M2WFP3-C,BD433M2EFJ-CE2,BD4XXM2WFP3-C,BD433M2FP3-C,BD433M2WFP3-CE2,BD450M2WEFJ-C,BD4XXM2-C,BD450M2EFJ-CE2,BD450M2EFJ-C,BD433M2FP3-CE2,BD433M2WEFJ-C,BD433M2WEFJ-CE2,BD433M2EFJ-C,BD450M2WFP3-,BD4XXM2WEFJ-C,BD4XXM2EFJ-C,BD450M2WFP3-CE2
符合ELV指令(2011/37/EU)BD450M2WEFJ-CE2
描述- ROHM公司宣布,其列出的LSI产品符合ELV指令(2011/37/EU)。产品BD450M2WEFJ-CE2包含有害物质,如镉、铅、汞和六价铬。部分产品含有免于ELV指令限制的铅。ROHM强调,在使用产品时,应遵守安全措施和规格,并指出产品适用于一般电子设备,但不适用于极端高可靠性应用。
型号- BD450M2WEFJ-CE2
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现货市场
服务
可定制变压器电压最高4.5KV,高频30MHz;支持平面变压器、平板变压器、OBC变压器、DCDC变压器、PLC信号变压器、3D电源、电流变压器、反激变压器、直流直流变压器、车载充电器变压器、门极驱动变压器等产品定制。
最小起订量: 100000 提交需求>
可定制LAMP LED、 CHIP LED、 PLCC LED、 汽车用车规级LED、COB LED的尺寸/电压/电流等参数,电压1.5-37V,电流5-150mA,波长470-940nm。
最小起订量: 30000 提交需求>
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