3-TERMINAL FIXED VOLTAGE REGULATOR Shantou Huashan Electronic Devices Co.,Ltd. H 7812 █ Description The H7812 series of three terminal positive Regulators are available in the TO-220 package and with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, Thermal shut down and safe operating area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulator, these devices can be used with external components to obtain adjustable voltages and currents. █ Features Output current up to 1A TO-220 Output Voltages of 12V Thermal Overload Protection Short Circuit Protection Output Transistor Safe Operating Area Protection █ Absolute Maximum Ratings（Ta=25℃） 1―INPUT 2―GND 3―OUTPUT VI——Input Voltage (for VO=5V to 18V)……………… 35V RθJC——Thermal Resistance Junction-Cases………… 5℃/W RθJA——Thermal Resistance Junction-Air………… 65℃/W TOPR——Operating Temperature Range…………… 0~125℃ TSTG——Storage Temperature Range…………… -65~150℃ 1 Shantou Huashan Electronic Devices Co.,Ltd. H 7812 （Refer to test circuit, unless otherwise specified，0℃≤TJ≤125℃,IO=500mA,VI=19V,CI=0.33μF,CO=0.1μF） Symbol VO Parameter Min. Typ. Max. 11.5 12 12.5 Output Voltage Unit TJ=25℃ V 11.4 12 Conditions 5.OmA≤IO≤1.0A, PD≤15W, 12.6 14.5V≤VI≤27V 10 ΔVO ΔVO IQ ΔIQ 240 Line Regulation (Note1) TJ=25℃, 14.5V≤VI≤30V mV 3.0 120 11 240 Load Regulation (Note1) TJ=25℃, 16V≤VI≤22V TJ=25℃, 5.0mA≤IO≤1.5A mV Quiescent Current 5.0 120 5.1 8 0.1 0.5 Quiescent Current Change TJ=25℃, 250mA≤IO≤750mA mA TJ=25℃ 5mA≤IO≤1.0A mA 0.5 14.5V≤VI≤30V 1.0 mV/ ΔVO/ΔT Output Voltage Drift IO=5mA -1 ℃ VN Output Noise Voltage 76 μV TA=25℃, 10Hz≤f≤100kHz RR Ripple Rejection 71 dB f=120Hz, 15V≤VI≤25V VD Dropout Voltage 2 V IO=1A, TJ=25℃ RO Output Resistance 18 mΩ f=1kHz ISC Short Circuit Current 230 mA VI=35V, TA=25℃ IPK Peak Current 2.2 A TJ=25℃ 55 2 Shantou Huashan Electronic Devices Co.,Ltd. H 7812 █ 1、 2、 3、 4、 █ 5、 6、 3 Shantou Huashan Electronic Devices Co.,Ltd. H 7812 8、 7、 10、 9、 11、 12、 13、 4 Shantou Huashan Electronic Devices Co.,Ltd. H 7812 5