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| LHC7913-4 3 AMP NEGATIVE LOW DROP VOLTAGE REGULATOR DRAFT DATA WITH INHIBIT FEATURES: x Low output capacitance: 1 F x Overtemperature protection x Overcurrent protection x Output short circuit monitoring, signalled by a TTL-compatible output x ON/OFF external control by means of TTL-compatible input. x Adjustable current limitation protects outputs from damaging shortcircuits. GENERAL DESCRIPTION: The LHC7913-4 is a negative Voltage Regulator family including both fixed and adjustable versions. Housed into Power SO-20 slug-up package. It is specifically intended for applications in rugged environments, such as Nuclear Physics, in which it has to withstand large amounts of radiation doses during its operating life. Input voltage ranges from -3 to -9 volts. REMOTE SENSING OPERATION 15-Jul-03 - Rev. 1.1 Page 1 of 3 LHC7913- 4 ABSOLUTE MAXIMUM RATINGS (NOTE 1) Symbol Parameter Vminus Vplus Vinh Io Value -10 5 Vplus+ 0.3 Internally limited Unit V V V A DC input voltage input voltage INHIBIT input voltage Output current OPERATING CONDITIONS (NOTE 2) Symbol Parameter Value -9 Unit V Vminus DC input voltage Note 1. Exceeding the absolute maximum rating may damage the device Note 2. The device is not guaranteed to function outside its operating rating. THERMAL INFORMATIONS Rthj-a To TSTG Thermal Resistance Junction-Ambient Power So-20 slug-up Operating junction temperature range Storage Temperature Range 2 -40 to 150 -40 to 150 C/W C C PIN CONFIGURATION Pin N SO-20 Pin Name Pin Function 1 Vminus Vminus 2 NC NOT CONNECTED 3 NC NOT CONNECTED 4 NC NOT CONNECTED 5 SH-CNTRL SHORT CIRCUIT Control 6 OCM OVER CURRENT MONITOR 7 VPlus Voltage input for Ocm & Inhibit state 8 NC NOT CONNECTED 9 GND COMMON GROUND 10 Vminus Vminus 11 Vminus Vminus 12 INH INHIBIT 13 ADJ ADJ (Adjustable version) 14 NC NOT CONNECTED 15 VOUT OUTPUT 16 VOUT OUTPUT 17 NC NOT CONNECTED 18 NC NOT CONNECTED 19 NC NOT CONNECTED 20 Vminus Vminus 15-Jul-03 - Rev. 1.1 Page 2 of 3 LHC7913 - 4 ELECTRICAL CHARACTERISTICS: Unless otherwise specified , Vin = Vout - 2.5 V, Vout =-3V, Vplus=3V,Tj =25C, Cin = 1 F, Cout = 1F SYMBOL VIN VOUT VOUT Ishort Vo/Vi Vo/VoI Lo Vplus Quescent current PARAMETER Operating input voltage Output voltage accuracy Operating output voltage Output current limit Line regulation Load regulation Quiescient current Iq, Plus Tj=-55 to 125 C Vplus =3V TEST CONDITIONS Iout = 3A Tj=-55 to 125 C Iout = 5mA Iout= 3A Tj=-55 to 125 C Tj=-55 to 125 C Adjustable Vi=Vout-2.5 to -12V Iout = 5mA MIN -3 -2 -1.21 4.5 1 1 200 500 170 200 3 5 20 40 80 150 0.3 0.4 0.6 0.95 1.3 2 0.8 Vin=Vout -2.5 0.5 V IOUT = 15mA f=120 Hz f= 33 Khz Vplus =3V Iout=0 to 3A Iout=0 to 3A Vplus =3V IOCM = 10 mA (sinked current) IOCM = -10uA (sourced current), Vi=Vout-2.5 Vplus = 3V 10Hz < freq < 100 Khz 2 0.6 Vplus 400 VINH = 3V 70 30 15 1 6 0.8 1.2 2 2.6 V 4 6 35 75 140 240 mA TYP MAX -9 2 -7 UNITS V % V A % % Iout = 5mA to 3A On mode Output shorted to GND, Iocm = 0mA On mode, Output shorted to GND, Iocm =10mA On mode Iout=0 Off mode, Vinh=3V Vi=Vout-2.5 to -12V, On mode Iout= 5 mA Vi=Vout-2.5 to -12V, On mode Iout = 30 mA Iq (Vminus) Quiescent Current, Tj=-55 to 125 C Vi=Vout-2.5 to -12V, On mode Iout = 300 mA Vi=Vout-2.5 to -12V, On mode Iout = 1 A Vi=Vout-2.5 to -12V, On mode Iout =2 A Vi=Vout-2.5 to -12V, On mode Iout =3 A OFF mode Vinh =3V Vplus =3V Iout= 400 mA, Tj=-55 to 125 C Vd Dropout voltage Iout= 1 A, Iout= 2 A, Iout =3 A, Tj=-55 to 125 C Tj=-55 to 125 C Tj=-55 to 125 C VINH VINH,Off VINH,On SVR IINH Cout ESR VOCML VOCMH en/Vout Inhibit voltage turn,Off voltage turn-On voltage Supply voltage rejection Shutdown input current Output capacitance Electrical series Resistance Overcurrent monitor voltage Low Overcurrent monitor voltage High Output noise voltage Vplus = 3V Tj=-55 to 125 C V dB F ohm V V Vrms/V 15-Jul-03 - Rev. 1.1 Page 3 of 3 |
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