器件介紹
Electrical Characteristics 電氣特性 (MC7812)(LM7812)(參照測試電路 ,0°C < TJ < 125°C, IO =500mA, VI =19V, CI=0.33ìF, CO=0.1ìF, 除非另有說明)
三端穩壓積體電路lm7812。電子產品中，顧名思義，三端IC是指這種穩壓用的積體電路，只有三條引腳輸出，分別是輸入端、接地端和輸出端。它的樣子象是普通的三極體，TO- 220的標準封裝，也有lm9013樣子的TO-92封裝。
詳細參數
| Parameter 參數 | Symbol 符號 | Conditions 條件 | 最小 | 典型 | 最大 | 單位 | |
| Output Voltage 輸出電壓 | VO | TJ =+25℃ | 11.5 | 12 | 12.5 | V | |
| 5.0mA ≤ IO≤1.0A, PO≤15W VI =14.5V to 27V | 11.4 | 12 | 12.6 | ||||
| Line Regulation 線性調整率 (Note1) | Regline | TJ =+25℃ | VI =14.5V to 30V | - | 10 | 240 | mV |
| VI =16V to 22V | - | 3.0 | 120 | ||||
| Load Regulation 負載調整率 (Note1) | Regload | TJ =+25℃ | IO =5mA to 1.5A | - | 11 | 240 | mV |
| IO =250mA to 750mA | - | 5.0 | 120 | ||||
| Quiescent Current 靜態電流 | IQ | TJ =+25℃ | - | 5.1 | 8.0 | mA | |
| Quiescent Current Change 靜態電流變化 | ΔIQ | IO =5mA to 1.0A | - | 0.1 | 0.5 | mA | |
| VI =14.5V to 30V | - | 0.5 | 1.0 | ||||
| Output Voltage Drift 輸出電壓漂移 | ΔVO/ΔT | IO =5mA | - | -1 | - | mV/℃ | |
| Output Noise Voltage 輸出噪聲電壓 | VN | f =10Hz to 100KHz, TA =+25℃ | - | 76 | - | μV/Vo | |
| Ripple Rejection 紋波抑制 | RR | f =120Hz VI =15V to 25V | 55 | 71 | - | dB | |
| Dropout Voltage 電壓差 | VDrop | IO =1A, TJ=+25℃ | - | 2 | - | V | |
| Output Resistance 輸出電阻 | rO | f =1KHz | - | 18 | - | mΩ | |
| Short Circuit Current 短路電流 | ISC | VI =35V, TA=+25℃ | - | 230 | - | mA | |
| Peak Current 峰值電流 | IPK | TJ =+25℃ | - | 2.2 | - | A |
三端穩壓積體電路極限參數：
| Parameter 參數 | Symbol 符號 | Value | 單位 |
| Input Voltage輸入電壓 | VI (for VO =5V to 18V) | 35 | V |
| (for VO =24V) | VI | 40 | V |
| Thermal Resistance Junction-Cases 熱阻(結到殼) (TO-220) | RθJC | 5 | ℃/W |
| Thermal Resistance Junction-Air熱阻(結到空氣) (TO-220) | RθJA | 65 | ℃/W |
| Operating Temperature Range工作溫度範圍 | TOPR | 0 ~ +125 | ℃ |
| Storage Temperature Range儲存溫度範圍 | TSTG | -65 ~ +150 | ℃ |
