LHC7913-4

LHC7913-4 3 AMP NEGATIVE LOW DROP VOLTAGE REGULATOR DRAFT DATA WITH INHIBIT FEATURES: x Low output capacitance: 1 µF 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 ºC/W ºC ºC PIN CONFIGURATION Pin N° SO-20 Pin Name 1 Vminus 2 NC 3 NC 4 NC 5 SH-CNTRL 6 OCM 7 VPlus 8 9 10 11 12 13 14 15 16 17 18 19 20 NC GND Vminus Vminus INH ADJ NC VOUT VOUT NC NC NC Vminus Pin Function Vminus NOT CONNECTED NOT CONNECTED NOT CONNECTED SHORT CIRCUIT Control OVER CURRENT MONITOR Voltage input for Ocm & Inhibit state NOT CONNECTED COMMON GROUND Vminus Vminus INHIBIT ADJ (Adjustable version) NOT CONNECTED OUTPUT OUTPUT NOT CONNECTED NOT CONNECTED NOT CONNECTED 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 =25°C, Cin = 1 µ F, Cout = 1µ F 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 µΑ 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 µΑ µF ohm V V µVrms/V 15-Jul-03 - Rev. 1.1 Page 3 of 3