JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD TO-251/252 Encapsulate Voltage Regulator CJ7912 Three-terminal negative voltage regulator TO-251 TO-252-2L FEATURES Maximum Output current IOM: 1.5 A Output voltage Vo: - 12 V Continuous total dissipation 1.25 W (TJ = 25 ℃ ) PD: 1. IN 1 2. GND 3. OUT 1 123 ABSOLUTE MAXIMUM RATINGS(Operating temperature range applies unless otherwise specified) Parameter Symbol Value Unit Vi -35 V Thermal resistance junction-air RθJA 65 ℃/W Thermal resistance junction-cases RθJC 5 ℃/W Operating Junction Temperature Range TOPR 0-150 ℃ Storage Temperature Range TSTG -65-150 ℃ Input Voltage ELECTRICAL CHARACTERISTICS(Vi=-19V,Io=500mA,0℃<TJ<125℃,Ci=0.33µF,Co=0.1µF, unless otherwise specified ) Parameter Symbol Output voltage ∆Vo Line regulation ∆Vo Quiescent Current Iq ∆Iq ∆Iq VN Quiescent Current Change Output Noise Voltage Output voltage drift MIN -11.5 TYP -12 MAX -12.5 UNIT V -11.4 -12 -12.6 V TJ=25℃, Io=5mA-1.5A 15 200 mV TJ=25℃, Io=250mA-750mA 5 75 mV -14.5V≤V i≤-30V, TJ=25℃ 5 80 mV -16V≤V i≤-22V, TJ=25℃ 3 30 mV TJ=25℃ -14.5V≤V i≤-30V 5mA≤I O≤1A 10Hz≤f≤100KHz IO=5mA 2 3 mA 0.5 0.5 300 -0.8 mA mA µV mV/℃ 60 dB TJ=25℃ -14.5V≤V i≤-27V, Io=5mA-1A P≤15W Vo Load Regulation Test conditions △Vo/△T 54 Ripple Rejection RR -15V≤V i≤-25V,f=120Hz, TJ=25℃ Dropout Voltage Vd TJ=25℃, Io=1A 1.1 V Peak Current Ipk TJ=25℃ 2.1 A TYPICAL APPLICATION Vi 2 3 Vo CJ7912 UTC Ci 2.2µF 1 Co 1µF