咨询热线：0769-8991 7065
咨询热线：0769-8991 7065
稳压电路是指在输入电压、负载、环境温度、电路参数等发生变化时依旧能保持输出电压恒定的一个集成电路。稳压电路可以提供稳定的直流电源，是各种直流电子设备电源电路中必备的集成电路。
稳压电路的种类有很多，分类也有许多种，常见的有直流稳压电路、交流稳压电路、串联型稳压电路、并联型稳压电路、开关型稳压电路和线性集成稳压电路。
稳压电路内部通常都集成了几个不同功能的元器件，通常都包含了整流电路、取样电路、比较放大电路、保护电路和稳压三极管。多种电路相互配合，使整个集成电路使用起来方便、可靠而且价格相当便宜。
使用注意事项：
1、应用时应当在稳压电路上安装足够大的散热器，否则在稳压管温度过高时，稳压性能会降低，甚至损坏。
2、需要制作一个并联稳压电路时，并联的稳压电路尽量采用同一厂家、同一批号的产品，保证其参数的一致性。且在输出电流上要留有一定的余量，避免个别稳压电路失效时导致其他电路的连锁烧毁。
长电三极管，长电稳压电路系列表单：
| 稳压电路 | PD | IO | VI | VIROC | VO | 封装形式 |
| (mW) | (mA) | (V) | (V) | (V) | ||
| CD431 | 300 | 100 | - | - | VREF 2.475~2.525 | SOT-23 |
| CJ431 | 770 | 100 | - | - | VREF 2.475~2.525 | TO-92 |
| CJ431 | 500 | 100 | - | - | VREF 2.475~2.525 | SOT-89-3L |
| CJ431 | 300 | 100 | - | - | VREF 2.475~2.525 | SOT-23 |
| CJ431K | 770 | 100 | VREF 2.470~2.520 | TO-92 | ||
| CJ431K | 300 | 100 | - | - | VREF 2.470~2.520 | SOT-23 |
| CJ432 | 500 | 100 | - | - | VREF 1.2214~1.2586 | TO-92 |
| CJ432 | 350 | 100 | - | - | VREF 1.2214~1.2586 | SOT-23 |
| CJ7805 | 1500 | 1500 | 35 | 7~25 | 4.8~5.2 | TO-263-2L |
| CJ7805 | 1500 | 1500 | 35 | 7~25 | 4.8~5.2 | TO-220-3L |
| CJ7805 | 1250 | 1500 | 35 | 7~25 | 4.8~5.2 | TO-252-2L(4R) |
| CJ7805F | 1500 | 1.5 | 35 | 7~25 | 4.8~5.2 | TO-220F |
| CJ7805FH＊ | 1500 | 35 | 7~25 | 4.8~5.2 | TO-220F | |
| CJ7805H | 1500 | 1500 | 35 | 7~25 | 4.8~5.2 | TO-220-3L |
| CJ7805H＊ | 1500 | 35 | 7~25 | 4.8~5.2 | TO-220-3L | |
| CJ7806 | 1500 | 1500 | 35 | 8~25 | 5.75~6.25 | TO-220-3L |
| CJ7806 | 1250 | 1500 | 35 | 8~25 | 5.75~6.25 | TO-252-2L(4R) |
| CJ7806FH＊ | 1500 | 35 | 8~25 | 5.75~6.25 | TO-220F | |
| CJ7806H＊ | 1500 | 35 | 8~25 | 5.75~6.25 | TO-220-3L | |
| CJ7808 | 1500 | 1500 | 35 | 10.5~25 | 7.7~8.3 | TO-220-3L |
| CJ7808 | 1500 | 1500 | 35 | 10.5~25 | 7.7~8.3 | TO-263-2L |
| CJ7808 | 1500 | 35 | 10.5~25 | 7.7~8.3 | TO-252-2L(4R) | |
| CJ7809 | 1500 | 1500 | 35 | 11.5~27 | 8.65~9.35 | TO-220-3L |
| CJ7809 | 1250 | 1500 | 35 | 11.5~27 | 8.65~9.35 | TO-252-2L(4R) |
| CJ7809F | 1500 | 1500 | 35 | 11.5~27 | 8.65~9.35 | TO-220F |
| CJ7812 | 1500 | 35 | 14.5~30 | 11.5~12.5 | TO-263-3L | |
| CJ7812 | 1500 | 35 | 14.5~30 | 11.5~12.5 | TO-263-2L | |
| CJ7812 | - | 1500 | 35 | 14.5~30 | 11.5~12.5 | TO-252-2L(4R) |
| CJ7812 | 1500 | 1500 | 40 | 14.5~30 | 11.5~12.5 | TO-220-3L |
| CJ7812F | - | 1500 | 35 | 14.5~30 | 11.5~12.5 | TO-220F |
| CJ7815 | 1500 | 1500 | 35 | 17.5~30 | 14.4~15.6 | TO-220-3L |
| CJ7815 | 1250 | 1500 | 35 | 17.5~30 | 14.4~15.6 | TO-252-2L(4R) |
| CJ7815 | 1500 | 35 | 17.5~30 | 14.4~15.6 | TO-263-3L | |
| CJ7815F | 1500 | 1500 | 35 | 17.5~30 | 14.4~15.6 | TO-220F |
| CJ78D05 | 1250 | 1000 | 35 | 7.5~20 | 4.8~5.2 | TO-252-2L(4R) |
| CJ78L05 | 625 | 100 | 30 | 7~20 | 4.8~5.2 | TO-92 |
| CJ78L05 | 250 | 100 | 30 | 7~20 | 4.8~5.2 | SOT-23-3L |
| CJ78L05 | 800 | 100 | 30 | 7~20 | 4.8~5.2 | SOT-89-3L |
| CJ78L06 | 625 | 100 | 30 | 8~20 | 5.75~6.25 | TO-92 |
| CJ78L06 | 500 | 100 | 30 | 8~20 | 5.75~6.25 | SOT-89-3L |
| CJ78L08 | 625 | 100 | 30 | 10.5~23 | 7.7~8.3 | TO-92 |
| CJ78L08 | 500 | 100 | 30 | 10.5~23 | 7.7~8.3 | SOT-89-3L |
| CJ78L09 | 625 | 100 | 30 | 11.5~24 | 8.64~9.36 | TO-92 |
| CJ78L09 | 800 | 100 | 30 | 11.5~24 | 8.64~9.36 | SOT-89-3L |
| CJ78L12 | 625 | 100 | 35 | 14.5~27 | 11.5~-12.5 | TO-92 |
| CJ78L12 | 800 | 100 | 35 | 14.5~27 | 11.5~-12.5 | SOT-89-3L |
| CJ78L15 | 625 | 100 | 35 | 17.5~30 | 14.4~15.6 | TO-92 |
| CJ78L15 | 800 | 100 | 35 | 17.5~30 | 14.4~15.6 | SOT-89-3L |
| CJ78L18 | 625 | 100 | 35 | 20.5~33 | 17.3~18.7 | TO-92 |
| CJ78L18 | 800 | 100 | 35 | 20.5~33 | 17.3~18.7 | SOT-89-3L |
| CJ78M05 | 1500 | 500 | 25 | 7~25 | 4.8~5.2 | TO-220-3L |
| CJ78M05 | 1250 | 500 | 25 | 7~25 | 4.8~5.2 | TO-251-3L |
| CJ78M05 | 1250 | 500 | 25 | 7~25 | 4.8~5.2 | TO-252-2L(4R) |
| CJ78M05H＊ | 500 | 25 | 7~25 | 4.8~5.2 | TO-252-2L(4R) | |
| CJ78M06 | 1500 | 500 | 25 | 8~25 | 5.75~6.25 | TO-220-3L |
| CJ78M06 | 1250 | 500 | 25 | 8~25 | 5.75~6.25 | TO-252-2L(4R) |
| CJ78M06 | 1250 | 500 | 25 | 8~25 | 5.75~6.25 | TO-251-3L |
| CJ78M08 | 1500 | 500 | 25 | 10.5~25 | 7.7~8.3 | TO-220-3L |
| CJ78M08 | 1250 | 500 | 25 | 10.5~25 | 7.7~8.3 | TO-251-3L |
| CJ78M08 | 1250 | 500 | 25 | 10.5~25 | 7.7~8.3 | TO-252-2L(4R) |
| CJ78M09 | 1500 | 500 | 25 | 11.5~26 | 8.65~9.35 | TO-220-3L |
| CJ78M09 | 1250 | 500 | 25 | 11.5~26 | 8.65~9.35 | TO-251-3L |
| CJ78M09 | 1250 | 500 | 25 | 11.5~26 | 8.65~9.35 | TO-252-2L(4R) |
| CJ78M12 | 1500 | 500 | 35 | 14.5~30 | 11.5~12.5 | TO-220-3L |
| CJ78M12 | 1250 | 500 | 35 | 14.5~30 | 11.5~12.5 | TO-251-3L |
| CJ78M12 | 1250 | 500 | 35 | 14.5~30 | 11.5~12.5 | TO-252-2L(4R) |
| CJ78M15 | 1250 | 500 | 35 | 17.5~30 | 14.4~15.6 | TO-252-2L(4R) |
| CJ7905 | 1500 | 1500 | -25 | -7~-25 | -4.8~-5.2 | TO-220-3L |
| CJ7905 | 1250 | 1500 | -25 | -7~-25 | -4.8~-5.2 | TO-252-2L(4R) |
| CJ7906 | 1500 | 1500 | -25 | -8~-25 | -5.75~-6.25 | TO-220-3L |
| CJ7908 | 1500 | 1500 | -25 | -10.5~-25 | -7.7~-8.3 | TO-220-3L |
| CJ7908 | 1250 | 1500 | -25 | -10.5~-25 | -7.7~-8.3 | TO-252-2L(4R) |
| CJ7909 | 1500 | 1500 | -25 | -14.5~-30 | -8.65~-9.35 | TO-220-3L |
| CJ7912 | 1500 | 1500 | -30 | -14.5~-30 | -11.5~-12.5 | TO-220-3L |
| CJ7912 | 1250 | 1500 | -30 | -14.5~-30 | -11.5~-12.5 | TO-252-2L(4R) |
| CJ7915 | 1500 | 1500 | -35 | -17.5~-30 | -14.4~-15.6 | TO-220-3L |
| CJ7915 | 1250 | 1500 | -35 | -17.5~-30 | -14.4~-15.6 | TO-252-2L(4R) |
| CJ7915F | 1500 | 1500 | -35 | -17.5~-30 | -14.4~-15.6 | TO-220F |
| CJ79L05 | 500 | 100 | -30 | -7~-20 | -4.8~-5.2 | SOT-89-3L |
| CJ79L05 | 625 | 100 | -30 | -7~-20 | -4.8~-5.2 | TO-92 |
| CJ79L06 | 350 | 100 | -30 | -8~-20 | -5.75~-6.25 | SOT-23-3L |
| CJ79L06 | 625 | 100 | -30 | -8~-20 | -5.75~-6.25 | TO-92 |
| CJ79L06 | 500 | 100 | -30 | -8~-20 | -5.75~-6.25 | SOT-89-3L |
| CJ79L08 | 350 | 100 | -30 | -10.5~-23 | -7.7~-8.3 | SOT-23-3L |
| CJ79L08 | 625 | 100 | -30 | -10.5~-23 | -7.7~-8.3 | TO-92 |
| CJ79L08 | 500 | 100 | -30 | -10.5~-23 | -7.7~-8.3 | SOT-89-3L |
| CJ79L09 | 350 | 100 | -30 | -12~-24 | -8.64~9.36 | SOT-23-3L |
| CJ79L09 | 625 | 100 | -30 | -12~-24 | -8.64~9.36 | TO-92 |
| CJ79L09 | 500 | 100 | -30 | -12~-24 | -8.64~9.36 | SOT-89-3L |
| CJ79L12 | 350 | 100 | -35 | -14.5~-27 | -11.5~-12.5 | SOT-23-3L |
| CJ79L12 | 625 | 100 | -35 | -14.5~-27 | -11.5~-12.5 | TO-92 |
| CJ79L12 | 500 | 100 | -35 | -14.5~-27 | -11.5~-12.5 | SOT-89-3L |
| CJ79L15 | 625 | 100 | -35 | -17.5~-30 | -14.4~-15.6 | TO-92 |
| CJ79L15 | 500 | 100 | -35 | -17.5~-30 | -14.4~-15.6 | SOT-89-3L |
| CJA1117-1.5 | 500 | 1000 | 17 | 3~10 | 1.485~1.515 | SOT-89-3L |
| CJA1117-1.8 | 500 | 1000 | 17 | 3.2~10 | 1.782~1.818 | SOT-89-3L |
| CJA1117-2.5 | 500 | 1000 | 17 | 3.9~10 | 2.475~2.525 | SOT-89-3L |
| CJA1117-3.3 | 500 | 1000 | 17 | 4.75~10 | 3.267~3.333 | SOT-89-3L |
| CJA1117-5 | 500 | 1000 | 17 | 6.5~12 | 4.95~5.05 | SOT-89-3L |
| CJA1117-ADJ | 500 | 1000 | 17 | - | 1.238~1.262 | SOT-89-3L |
| CJA1117B-1.8 | 500 | 1000 | 20 | 3.3~12 | 1.773~1.827 | SOT-89-3L |
| CJA1117B-2.5 | 500 | 1000 | 20 | 4~12 | 2.463~2.538 | SOT-89-3L |
| CJA1117B-3.3 | 500 | 1000 | 20 | 4.8~12 | 3.251~3.350 | SOT-89-3L |
| CJA1117B-5 | 500 | 1000 | 20 | 6.5~12 | 4.925~5.075 | SOT-89-3L |
| CJA1117B-ADJ | 500 | 1000 | 20 | - | 1.231~1.269 | SOT-89-3L |
| CJT1117B-1.8 | 1250 | 1000 | 20 | 3.3~12 | 1.773~1.827 | SOT-223(8R) |
| CJT1117B-3.3 | 1250 | 1000 | 20 | 4.8~12 | 3.251~3.350 | SOT-223(8R) |
| CJT1117B-5.0 | 1250 | 1000 | 20 | 6.5~12 | 4.925~5.075 | SOT-223(8R) |
| CJT1117B-ADJ | 1250 | 1000 | 20 | 1.231~1.269 | SOT-223(8R) | |
| CJU1117-ADJ | 1250 | 1000 | 17 | - | 1.238~1.262 | TO-252-2L(4R) |
| LM317 | 1500 | 40 | - | 1.2~37 | TO-220-3L | |
| LM317 | - | 1500 | 40 | 1.2~37 | TO-252-2L(4R) | |
| LM317 | - | 1500 | 40 | - | 1.2~37 | TO-263-2L |
| LM317 | 1500 | 40 | 1.2~37 | SOT-223(8R) | ||
| LM317L | 100 | 40 | 1.2~1.3 | 1.2~37 | SOT-89-3L |
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