【应用】供给负载电流可达3A的国产DCDC降压芯片LM2576助力医用输液泵设计，待机电流仅50μA，功耗低
在医疗领域中，便携、可靠的医疗设备往往最受人们的青睐，而随着半导体的高速发展，很多医疗仪器设备由以前直接市电供电向锂电池供电转变，而利用锂电池供电往往就离不开与之相关的电源芯片，电源芯片这关乎电池的安全、电路的稳定可靠以及仪器设备是否能正常的运行。
某客户在医用输液泵设计中采用长供电输入15V、输出12V同时可以给三节串联18650锂电池充电的锂电池管理芯片，锂电池稳定输出12V后，经过DCDC降压芯片将12V降压为5V，并且稳定输出电流3A给到气泵进行供电，经过与客户的沟通确认，最终确定华冠半导体DCDC降压芯片LM2576的LM2576S-5.0/TR，下图1为华冠半导体DCDC降压芯片LM2576S-5.0/TR的应用框图：
图1 华冠半导体DCDC降压芯片LM2576S-5.0/TR应用框图
客户采用了华冠半导体DCDC降压芯片LM2576系列中的芯片，具有以下特点：
（1）该系列芯片作为单片集成电路，能提供降压开关稳压器（buck）的各种功能，可驱动3A的负载，具有优异的线性和负载调整能力；
（2）该系列芯片内部含有频率补偿器和一个固定频率振荡器，可以让设计的外部元件数目减到最少，设计上更简便；
（3）该系列芯片在指定输入电压和输出负载条件下保证输出电压的±4%误差、振荡器频率的±10%误差，并且待机电流为50μA（典型值）；低误差低功耗更适合便携的医疗设备产品。
综上所述，在该客户的方案设计中，考虑到客户输入输出的电压需求以及电流需要达到3A的要求，并结合到该芯片已经在市场上也经过了长期的验证，性能、功能等方面都较为出色，选用华冠半导体DCDC降压芯片LM2576的LM2576S-5.0/TR是一个和理想的设计与选择。
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目录- 公司简介 MOS管/比较器/存储器电路/达林顿阵列 电源管理电路 低压差稳压器 线性稳压/通用接口电路 驱动/音频电路 运算放大器/时基与时钟/逻辑电路&其他电路 微处理器 运放 接口 半导体器件概览
型号- HG9923,DS1302,TEA2025,DS1307,CD4069,XC61C-XX,CD4075,CD4073,TL494,NE556,NE555,CD4078,CD4077,75N08,HGC5615,24C128,CD4071,CD4070,KA7500,HG9261XX,FCF8563,LM3480,74HC4067,LM311,LM432,LM431,LM555,LM317,74HC32,74HC595,CD4068,CD4067,CD4066,74HC238,HG51031,CD4060,24C256,HG1201-XX,HG9921,MAX6576,HG9922,LM4580,74HC00,74HC03,HG202,74HC02,MAX3085,74HC04,HG3480,74HC07,HGV8144,HGV8142,CD4094,LM386-1,HGV8141,LM1084,LM1085,HG29100-XX,LM1086,HGC29300-XX,CD4093,74HC4046,LM1081,HG9910,LM1083,HG335,74HC14,LM79XX,HG24C08B,HG18B20,74HC573,74HC574,HGC5620,74HC4053,74HC08,HGC29150-XX,74HC4051,74HC4052,HGV8091N,CD4081,LM385-2.5,LP2954,ZNBG4000,LP2951,LMV321,LP2950,ICL8038,HG8F629,74C194,HG8F628,NE594,HGC2543,MAX7219,HG75176,HGC2549,HG2003,HGV8092N,LM29150,HG2004,LM4250,HG13085,HG3232,HG235,LM78XX,HG232,HG1051,LM358,HG1052,HGV8558,HGV8555,HGV8556,HGV8554,LM2937-XX,HGV8551,HGV8552,CA3140,HG8F630,HG8F873,AD590,74HC273,HG2593,LM1117-XX,LM321,HG485,HG2591,LP3965-XX,LM324,HG2592,LM567,13N50,LM317M,LM317L,74HC123,74HC244,74HC245,74HC125,HG8F887,HG8F883,LM317T,LM7660,LM331,HG135,HG0066,HG0065,HGC1589,LM336,HGV8965N,LM339,HGV8334,HGV8331,HGV8332,74HC132,74HC374,74HC138,74HC139,DS1990,74HC373,LM386,CD40106,LP2997,LP3965,LP2996,LP2995,XC62FP-XX,LM78L05,LM78L06,MC3845,LM78L08,LM78L09,LMV358,MC3842,MC3844,9N90,MC3843,TDA2822,LM385,HG6008,HG24C02B,HGV2774,HGV2771,HG5171,HGV2772,TDA8138,LM78M12,TDA8137,LM78M15,HGC5213-XX,74HC192,74HC193,74HC194,LM393,HG3085,ZNBG3211,HG24C256,MAX487,74HC86,MAX489,74HC165,LM78M05,HG1582-XX,MAX488,LM78M06,TL072,LM2940-XX,HGV258,LM78M08,LM78M09,TL074,50N06,28N60,74HC164,HGC1549,ULN2803,ULN2804,HG298,HG297,HG24C128,HGC1543,MAX232,TL082,HGV8094,HGV8092,TL084,HG1203-XX,HGV8091,HG293,LMC555,HG54123,LM2904,HG6570,LM2901,HGV8048,LM2902,HGV8045,LM2903,HGV8046,HGV8044,HGV358,HGV8041,HGV8042,85N06,HG3078,MAX490,HG3075,MAX491,HG3072,74HC74,HGV224,TL064,TL062,HGV221,MIC5212,HG1108-XX,HGV8064,HGV8061,HGV8062,HG24C04B,HG24C16B,DS75176,50N50,HGV8054,HGV324,HGV321,LM8002,XC62GR-XX,HG24C32,HGC29500-XX,HGV8928,TEA2822,HG75HVD3082E,HG7189,LM3916,LM78LXX,IRF830,LM3915,HG93C56,LM3914,TL064C,HGC8F630,MXA485,HG2981,HG2980,LM2954,HG93C46,LM285-2.5,HGC52XX,HG34C86,HG34C87,HGC8F629,MAX13805,MC34119,MC34118,LM2576-XX,IRF730,HG8137,CD4528,HG7169,70N06,LM78MXX,CD4520,TLC2543,HG8138A,HG1734,HG1735,20N60,HG1185-XX,HG1851,IRF840,CD4518,HG1990,CD4517,HG1991,LM285-1.2,HG7179,LM1881,24C64,CD4511,LM2931-XX,HGL297,HGL298,HG93C66,HG1509,KA7500B,LF347,LM29302,HG1501,HGC8F887,HG1621,HG75LBC184,HG75LBC182,CD4543,TL072C,TL084C,HG2803,HGL293,LF398,HG75LBC176,IRF740,3N80,CD4538,CD4541,XC62GP-XX,24C32,HG1205-XX,20N50,MAX1487,4N60,MC1403,24C08,MAX202,TL074C,TL062C,TLC5615,HG1937,LM2575-XX,HG1932,24C02,24C01,24C04,HG7012,CD1046,LM78L12,LM78L15,CD4562,HG809,LM29502,24C16,HG2571,HG2572,HG2573,HG3421,HG3420,11N90,12N60,ICL7660,93C06,HGC5219,LM2596-XX,CD1068,HGV8725N,TDA2030,75N75,HG8F676,HG8F675,LM4860,HG3423,HG1487,HG3422,HGV8061N,LM3414,HG1583,LM1117,LM4862,LM4861,HG1580,LM4863,TL082C,CD4007,LM385-1.2,HG1208-XX,TDA2003,CD4013,CD4011,HGV8062N,LM4990,LM4871,HG8F683,HG8F684,ULN2003,ULN2004,LM2574,LM2575,HGV8538,LM2576,HGV8535,HGV8536,HGV8534,HGV8531,MC34063,HGV8532,LM7905,LM809,CD4001,HG3526,HG3525,24C512,HG3524,LM35,LM7915,LM741,LM7912,HGV8968,HGV8726,HGC8F683,HGV8966,HGV8725,CD4028,HG24C512,CD4027,HGV8965,CD4025,OP07,10N80,74HC540,74HC541,ICL7106,PCF8563,ICL7107,HG4824,HGV8052N,LM4890,HGC8F676,HGC8F675,LM7805,LM7924,TD62083A,LM2596,CD4017,LM79LXX,CD4015,LM7809,LM7808,LM7806,CD4020,HGV2771N,CD4024,CD4023,CD4022,HG26C31,HG26C32,10N60,LM56,LM7815,HG56,ZNBG6000,LM7812,TD62084A,HG70XX,74HCU04,NE5532,CD4049,CD4053,CD4052,CD4051,93C66,CD4050,HG2982,HG2985,UC3845,LM4558,HG24C64,74LVC1G04,UC3842,UC3843,UC3844,LM79MXX,7N60,TLC1543,93C56,CD4040,CD4046,74HC533,74HC534,LM4560,HGC8F684
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型号- HG9923,DS1302,TEA2025,DS1307,CD4069,MAX187,XC61C-XX,CD4075,CD4073,TL494,NE556,NE555,CD4078,CD4077,MC34U8,75N08,HGC5615,24C128,CD4071,CD4070,KA7500,HG9261XX,FCF8563,LM3480,74HC4067,LM311,LM432,LM431,LM555,LM317,74HC32,74HC595,CD4068,CD4067,CD4066,74HC238,HG51031,CD4060,24C256,HG1201-XX,HG9921,MAX6576,HG9922,LM4580,74HC00,74HC03,HG202,HG1205-H,74HC02,MAX3085,74HC04,HG3480,74HC07,CD4094,LM386-1,LM1084,LM1085,HG29100-XX,LM1086,LM1087,HGC29300-XX,CD4093,74HC4046,HG9910,LM1083,HG335,74HC14,LM79XX,HG24C08B,HG18B20,74HC573,74HC574,HGC5620,74HC4053,74HC08,HGC29150-XX,74HC4051,74HC4052,CD4081,LP2954,ZNBG4000,LP2951,LMV321,LP2950,ICL8038,HG8F629,HG8F628,NE594,HGC2543,MAX7219,HG75176,HGC2549,HG2003,LM29150,HG2004,LM4250,HG13085,HG3232,HG235,LM78XX,HG232,HG1051,LM358,HG1052,HGV8558,HGV8556,HGV8554,LM2937-XX,HGV8551,HGV8552,CA3140,HG8F630,HG8F873,AD590,74HC273,HG2593,LM1117-XX,LM321,HG485,HG2591,LP3965-XX,LM324,HG2592,LM567,13N50,LM317M,LM317L,74HC123,74HC244,74HC245,74HC125,HG8F887,HG8F883,LM317T,LM7660,LM331,HG135,HG0066,HG0065,HGC1589,LM336,HGV8965N,LM339,HGV8331,74HC132,74HC374,74HC138,74HC139,DS1990,74HC373,LM386,CD40106,LM385-1.2 2.5,LP2997,LP3965,LP2996,LP2995,XC62FP-XX,LM78L05,LM78L06,MC3845,LM78L08,74IIC164,LM78L09,LMV358,MC3842,MC3844,9N90,MC3843,TDA2822,LM385,HG6008,HG24C02B,HGV2774,HGV2771,HG5171,HGV2772,TDA8138,LM78M12,TDA8137,LM78M15,HGC5213-XX,74HC192,74HC193,74HC194,LM393,HG3085,ZNBG3211,HG24C256,74HC86,MAX489,74HC165,HG1582-XX,MAX488,LM78M06,TL072,LM2940-XX,HGV258,LM78M08,LM78M09,IIG34C87,TL074,50N06,28N60,74HC164,HGC1549,ULN2803,ULN2804,HG298,HG297,HG24C128,HGC1543,MAX232,TL082,TL084,HG1203-XX,HG293,LMC555,HG54123,LM285-1.2 2.5,LM2904,HG6570,LM2901,LM2902,LM2903,HGV358,85N06,HG3078,MAX490,HG3075,MAX491,HG3072,74HC74,HGV224,TL064,TL062,HGV221,MIC5212,HG1108-XX,HG24C04B,HG24C16B,DS75176,74IIC238,50N50,HGV8054,HGV324,74IIC04,TRF830,HGV321,LM8002,XC62GR-XX,HG24C32,HGC29500-XX,TEA2822,HG75HVD3082E,HG7189,LM3916,LM78LXX,IRF830,LM3915,HG93C56,LM3914,TL064C,MXA485,HG2981,HG2980,LM2954,HG93C46,HGC52XX,HG34C86,HG34C87,MAX13805,IIGV8555,MC34119,MC34118,LM2576-XX,IRF730,HG8137,CD4528,HG7169,IIGC8F 629,70N06,LM78MXX,CD4520,TLC2543,HG8138A,HG1734,HG1735,20N60,HG1185-XX,HG1851,IRF840,CD4518,HG1990,CD4517,HG1991,HG7179,LM1881,24C64,CD4511,LM2931-XX,HGL297,HGL298,HG93C66,HG1509,KA7500B,LF347,LM29302,HG1501,HG1621,HG75LBC184,HG75LBC182,CD4543,TL072C,TL084C,HG2803,HGL293,LF398,HG75LBC176,IRF740,3N80,CD4538,I.M78M05,CD4541,XC62GP-XX,24C32,20N50,MAX1487,4N60,MC1403,24C08,MAX202,TL074C,TL062C,TLC5615,HG1937,LM2575-XX,HG1932,24C02,24C01,24C04,HG7012,LM78L12,LM78L15,CD4562,HG809,LM29502,24C16,HG2571,HG2572,HG2573,HG3421,HG3420,11N90,12N60,ICL7660,93C06,HGC5219,LM2596-XX,HGC8F 887,TDA2030,75N75,HG8F676,HG8F675,LM4860,HG3423,HG1487,HG3422,LM3414,HG1583,LM1117,LM4862,LM4861,HG1580,LM4863,HGC8F 630,TL082C,CD4007,HG1208-XX,TDA2003,CD4013,CD4011,LM4990,LM4871,HG8F683,HG8F684,ULN2003,ULN2004,LM2574,LM2575,HGV8538,LM2576,HGV8535,HGV8536,HGV8534,HGV8531,MC34063,HGV8532,LM7905,LM809,CD4001,HG3526,HG3525,24C512,HG3524,LM35,LM7915,LM741,HGV8728,LM7912,HGV8968,HGV8726,HGV8966,CD4028,HG24C512,CD4027,HGV8965,CD4025,OP07,10N80,74HC540,74HC541,ICL7106,PCF8563,ICL7107,HG4824,HGV8052N,LM4890,HGC8F675,LM7805,LM7924,TD62083A,LM2596,CD4017,LM79LXX,HGC8F 684,CD4015,LM7809,LM7808,HGC8F 683,LM7806,CD4020,HGV2771N,CD4024,CD4023,CD4022,HG26C31,HG26C32,10N60,LM56,LM7815,HG56,ZNBG6000,LM7812,TD62084A,HG70XX,74HCU04,NE5532,CD4049,HGC8F 676,CD4053,CD4052,CD4051,93C66,CD4050,HG2623,HG2982,HG2985,HG2621,HG2622,UC3845,LM4558,HG24C64,74LVC1G04,UC3842,UC3843,UC3844,LM79MXX,7N60,TLC1543,IIGV8334,93C56,CD4040,IIGV8332,CD4046,74HC533,74HC534,LM4560
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新产品 发布时间 : 2022-07-27
广东华冠半导体有限公司公司简介
型号- DS1302,TEA2025,HG7189,LM3916,DS1307,CD4069,IRF830,LM3915,LM3914,CD4075,CD4073,TL494,NE556,NE555,CD4078,CD4077,HGC5615,24C128,75N08,CD4071,KA7500,CD4070,FCF8563,74HC4067,LM432,HG2981,LM431,HG2980,LM2954,LM555,74HC32,74HC595,HG34C86,HG34C87,CD4068,CD4067,CD4066,74HC238,MC34119,MC34118,24C256,CD4060,MAX6576,LM4580,74HC00,HG202,IRF730,74HC03,HG7169,74HC02,CD4528,HG3480,70N06,74HC04,74HC07,CD4520,LM386-1,CD4094,LM1084,LM1085,LM1086,74HC4046,CD4093,20N60,HG335,HG1990,IRF840,74HC14,CD4518,HG1991,CD4517,HG7179,LM1881,24C64,CD4511,H3085,HG18B20,74HC573,HGC5620,74HC574,LF347,LM29302,74HC4053,74HC08,74HC4051,74HC4052,CD4081,HG1621,ZNBG4000,LP2951,LMV321,LP2950,CD4543,ICL8038,HG8F629,HG8F628,HG2803,HGC2543,LF398,HGC2549,HG2003,LM29150,HG2004,LM4250,HG13085,HG3232,HG235,IRF740,HG232,LM358,3N80,CD4538,CD4541,82N06,HG8F630,HG8F873,24C32,AD590,20N50,74HC273,LM321,HG485,LM324,LM567,4N60,13N50,MC1403,LM317M,24C08,LM317L,74HC123,74HC244,74HC245,HG8F887,74HC125,HG8F883,LM317T,24C02,24C01,24C04,LM7660,LM331,HG135,LM336,LM78L12,LM78L15,74HC132,74HC374,LM29502,CD4562,74HC138,74HC139,24C16,74HC373,HG3421,HG3420,CD40106,LP2997,LP3965,LP2996,LP2995,11N90,12N60,LM78L05,LM78L06,MC3845,LM78L08,LM78L09,MC3842,LMV358,93C06,MC3844,MC3843,TDA2822,9N90,LM385,LM78M12,TDA2030,75N75,LM78M15,HG8F676,HG8F675,LM4860,74HC192,HG3423,HG1487,HG3422,LM1117,LM4862,LM4861,LM4863,ZNBG3211,74HC86,CD4007,LM78M05,74HC165,LM78M06,TL072,TDA2003,LM78M08,LM78M09,CD4013,CD4011,TL074,LM4990,50N06,28N60,HG8F683,LM4871,HG8F684,74HC164,HGC1549,HG298,LM2575,HG297,LM2576,HGC1543,74HC94,74HC93,MC34063,LM7905,TL082,LM809,CD4001,TL084,HG293,24C512,LM7915,LM741,LM7912,LM2904,CD4028,CD4027,CD4025,OP07,LM2901,10N80,LM2903,74HC540,74HC541,LM2909,LM4890,LM7805,LM7924,LM2596,CD4017,CD4015,LM7809,74HC74,LM7808,LM7806,CD4020,TL064,CD4024,CD4023,TL062,CD4022,10N60,LM7815,HG56,ZNBG6000,LM7812,74HCU04,CD4049,CD4053,CD4052,93C66,CD4051,CD4050,HG2623,HG2982,HG2985,HG2621,HG2622,LM4558,74LVC1G04,7N60,50N50,93C56,CD4040,CD4046,74HC533,74HC534,LM4560
华冠半导体开关型降压稳压器选型表
华冠半导体开关型降压稳压器工作电压范围4V~63V，静态功耗最低80uA，输出电流1A~3A，多种电压输出可供选择，具有性能高，功耗低，工作稳定等特点，广泛应用于消费电子和工业领域
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产品型号
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品类
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工作电压(V)
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输出电流Max(A)
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静态功耗(Typ)(uA)
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输出电压(V)
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频率Freq((Khz)
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效率(%)
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工作温度(°C)
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封装
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功能描述
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LM2596
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开关型降压稳压器
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4V~40V
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3A
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80uA
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3.3V;5.0V;12V;15V;ADJ
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150Khz
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86%
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-40°C~125°C
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TO263-5;TO220-5;TO-252-5;ESOP-8
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3A150KHz开关型降压稳压器
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选型表 - 华冠半导体 立即选型
【选型】国产中高压DCDC同步降压芯片用于直流无刷电机控制板，60V输入电压，最高输出电流可达3A
客户的项目是直流无刷电机控制板，需要内置高耐压功率管的同步降压芯片来设计供电模块，客户的需求是：输入电压要在55V以上，输出电流要在2A以上，TO-263封装。推荐国产华冠半导体的一款中高压DCDC同步降压芯片LM2576HV系列。
器件选型 发布时间 : 2022-10-12
【技术大神】DCDC降压芯片SGM6130替代LM2576-3.3在宽电压、大电流供电系统中的应用设计
SGM6130是支持4.5V-28V输入，3A输出的高转换效率DCDC芯片。可以实现对大电流供电系统的良好供电。
设计经验 发布时间 : 2018-05-31
【产品】华冠半导体推出的达林顿阵列功率驱动集成电路ULN2003A，输出电压高达50V，灌电流可达500mA
华冠半导体的ULN2003A是高耐压、大电流达林顿阵列，由七个硅NPN达林顿管组成。所有单元共用发射极，每个单元采用开集电极输出。为了提高输出效率，减小漏电，单元内部设计了镇流二极管以及适当的基—射极电阻。
产品 发布时间 : 2022-10-19
LM2576 3A 50KHZ 40V DCDC Voltage Regulator IC
型号- LM2576T5-15,LM2576T5-12,LM2576ST5-5.0TR,LM2576,LM2576ST5-ADJ,LM2576ST5-12,LM2576ST5-12TR,LM2576T5-ADJ,LM2576T5- 3.3,LM2576-ADJ,LM2576ST5-15TR,LM2576□-□□,LM2576ST5-15,LM2576ST5-5.0,LM2576ST5-3.3TR,LM2576ST5-ADJTR,LM2576-15,LM2576T5-5.0,LM2576-5.0,LM2576-3.3,LM2576ST5-3.3,LM2576-12
【产品】华冠半导体推出的RC4580双通道运算放大器，低输入电压噪声，工作电压宽至±2V~±16V
华冠半导体推出型号为RC4580的双通道运算放大器，专为提升音频控制而设计，最适用于音频应用领域，器件具有无噪声、高增益带宽、高输出电流和低失真率的特点，不仅最适合音频前置放大器和有源滤波器的声学电子部件。
产品 发布时间 : 2023-05-08
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实验室地址： 深圳 提交需求>
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>
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