基本介紹
- 中文名：L7805CV
- 輸出電壓：4.75-5.25V
- 靜態電流：4.2-8mA
- 最大輸入電壓：35V
基本參數：,特徵：,行情分析：,
基本參數：
輸出電壓：4.75-5.25V；
最大輸入電壓：35V；
靜態電流：4.2-8mA；
輸出噪音電壓：40uV；
紋波抑制比：78dB；
輸出電阻：17mΩ；
輸出電壓溫度係數-1.1mV/°C；（註：L7805CV與7805相通）
英文描述：positive voltage regulators
中文描述：正電壓穩壓器
L7805CV 和 STMicroelectronics 信息Manufactured by STMicroelectronics, L7805CV is a 線性調節器. STMicroelectronics is one of the world's largest semiconductor companies with net revenues of US$ 8.49 billion in
2012. Offering one of the industry's broadest product portfolios, ST serves customers across the spectrum of electronics applications with innovative semiconductor solutions by
leveraging its vast array of technologies, design expertise and combination of intellectual property portfolio, strategic partnerships and manufacturing strength.
中文描述：正電壓穩壓器
L7805CV 和 STMicroelectronics 信息Manufactured by STMicroelectronics, L7805CV is a 線性調節器. STMicroelectronics is one of the world's largest semiconductor companies with net revenues of US$ 8.49 billion in
2012. Offering one of the industry's broadest product portfolios, ST serves customers across the spectrum of electronics applications with innovative semiconductor solutions by
leveraging its vast array of technologies, design expertise and combination of intellectual property portfolio, strategic partnerships and manufacturing strength.
內部電路結構參數 | 符號 | 測試條件 | 最小值 | 典型值 | 最大值 | 單位 |
輸出電壓 | Vo | Tj=25℃ | 4.8 | 5.0 | 5.2 | V |
5.0mA<1o<1.0A,Po<15WVi=7.5v to 20v | 4.75 | 5.00 | 5.25 | V | ||
線性調整率 | △Vo | Tj=25℃,Vi=7.5V to 25V | 4.0 | 100 | mV | |
Tj=25℃,Vi=8V to 12V | 1.6 | 50 | mV | |||
負載調整率 | △Vo | Tj=25℃,lo=5.0mA to 1.5A | 9 | 100 | mV | |
Tj=25℃,lo=250mA to 750mA | 4 | 50 | mV | |||
靜態電流 | IQ | Tj=25℃ | 5.0 | 8 | mA | |
靜態電流變化率 | △IQ | lo=5mA to 1.0A | 0.03 | 0.5 | mA | |
Vi=8V to 25V | 0.3 | 0.8 | mA | |||
輸出電壓溫漂 | △Vo/△T | lo=5mA | 0.8 | mV/℃ | ||
輸出噪音電壓 | VN | f=10Hz to 100KHz,Ta=25℃ | 42 | μV | ||
紋波抑制比 | RR | f=120Hz,Vi=8V to 18V | 62 | 73 | dB | |
輸入輸出電壓差 | Vo | lo=1.0A,Tj=25℃ | 2 | V | ||
輸出阻抗 | Ro | f=1KHz | 15 | mΩ | ||
短路電流 | 1SC | Vi=35V,Ta=25℃ | 230 | mA | ||
峰值電流 | 1PK | Tj=25℃ | 2.2 | A |
典型套用電路
7805外形圖特徵：
輸出電流可達1.5A
不需外接補償元件
內含限流保護電流，防止負載短路燒毀元件
內含高溫過熱保護電路，防止結溫過熱燒毀器件
內含功耗限制電路，防止燒毀輸出驅動器電晶體
行情分析：
據華強北中國電子市場價格指數網10月份IC詢報價數據顯示：相比9月份，三端穩壓管L7805CV詢價和報價次數明顯增加。不同品牌的報價差距也較大，NULL品牌的報價一般在0.9-1.2元/PCS；ST的報價一般在0.68-0.72元/PCS，在採購量較大時，L7805CV的價格可以降至0.38-0.41元/PCS。
