LM120A-05 LM120-05 LM7905A LM7905 1.5 AMP NEGATIVE VOLTAGE REGULATOR 1 1 2 2 3 3 • OUTPUT VOLTAGE OF -5V Pin 1 – Ground Pin 2 – VOUT Case – VIN K Package – TO–3 FEATURES Pin 1 – Ground Pin 2 – VOUT Case – VIN R Package – TO–66 • 0.7% / V LINE REGULATION AVAILABLE • 0.5% / A LOAD REGULATION AVAILABLE • THERMAL OVERLOAD PROTECTION • SHORT CIRCUIT PROTECTION • OUTPUT TRANSISTOR SOA PROTECTION ! • 1% VOLTAGE TOLERANCE OPTION (–A VERSIONS) 1 2 3 DESCRIPTION Pin 1 – Ground Pin 2 – VIN Pin 3 – VOUT Case – VIN G Package – TO–257 IG Package– TO–257* Pin 1 – Ground Pin 2 – VIN Pin 3 – VOUT SMD Package – SMD1 Ceramic Surface Mount The A suffix devices provide 0.7% / V line regulation, 0.5% / A load regulation and ±1% output voltage tolerance at room temperature. Protection features include Safe Operating Area current limiting and thermal shutdown. * isolated Case on IG package ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated) VI DC Input Voltage 35V PD Power Dissipation Internally limited Tj Operating Junction Temperature Range –55 to 150°C Tstg Storage Temperature –65 to 150°C Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use. Semelab encourages customers to verify that datasheets are current before placing orders. Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. E-mail: [email protected] Website: http://www.semelab.co.uk Document Number 2643 Issue: 1 LM120A-05 LM120-05 LM7905A LM7905 Parameter VO Test Conditions Output Voltage IO = 500mA VIN = -10V IO = 5mA to IMAX VIN = -7.5V to -20V PD £ PMAX TJ = -55 to 150°C LM7905A LM120A–05 Min. Typ. Max. LM7905 , LM120–05 LM120–05 Min. Typ. Max. -4.95 -5.05 -4.9 -5.15 -4.8 -4.85 VIN = -7V to -25V DVO IO = 0.5 IMAX DVO Load Regulation VIN = -10V 25 3 10 3 50 1 4 1 25 TJ = -55 to 150°C 1 12 2 50 IO = 5mA to 1.5A 25 35 25 100 25 35 25 100 1 1.9 1 1.9 1 2 1 2 0.2 0.4 0.2 0.4 0.2 0.5 0.2 0.5 IO = 5mA to IMAX TJ = -55 to 150°C IO £ 0.5 IMAX IQ Quiescent Current DIQ Quiescent Current IO = 5mA to IMAX VIN = -10V VN DVIN DVO VIN = -10V Output Noise f = 10Hz to 100kHz Voltage VIN = -10V Ripple Rejection Isc Ipk TJ = -55 to 150°C f = 120Hz IO £ IMAX VIN = -8V to -18V IO £ 0.5 IMAX 58 54 58 54 IO = IMAX Output Resistance f = 1 kHz V mV mV mA mA mV 100 100 TJ = -55 to 150°C Dropout Voltage RO TJ = -55 to 150°C Change -5.2 3 VIN = -8V to -12V Units -5.1 10 TJ = -55 to 150°C IO £ IMAX -5 3 VIN = -7.5V to -20V Line Regulation -5 dB 1.4 1.4 V 5 5 mW Short Circuit VIN = -35V Current 0.6 0.6 1.2 1.2 A Peak Output Current Average VIN = -10V 2.4 IO = 5mA 0.2 2.4 3.3 3.3 Temperature Coefficient of VO Input Voltage required to maintain line regulation IO £ IMAX -7.3 0.2 mV °C V -7.3 1) All characteristics are measured with a capacitor across the input of 0.22mF and a capacitor across the output of 0.1mF. All characteristics except noise voltage and ripple rejection ratio are measured using pulse techniques (tp voltage changes due to changes in internal temperature must be taken into account separately. £ 10ms, d £ 5%). Output 2) Test Conditions unless otherwise stated:PMAX = 10W for SMD , PMAX = 20W for all other package devices IMAX = 1.0A , TJ = 25°C Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use. Semelab encourages customers to verify that datasheets are current before placing orders. Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. E-mail: [email protected] Website: http://www.semelab.co.uk Document Number 2643 Issue: 1 LM120A-05 LM120-05 LM7905A LM7905 APPLICATIONS INFORMATION I N PU T VOU T VIN OUTPUT I N PU T GND C1 * 2. 2µF T AN T . VOU T VIN GND C2 * * 1 µF TANT. Fixed Output Regulator * Required if the regulator is located far from the power supply. ** Required for stability. 25mF electrolytic may be substituted. OUTPUT I N PU T GND R1 C1 2. 2µF T AN T . R2 C2 1 µF TANT. Adjustable Output Regulator VOUT » VREG VOU T VIN (R1+R2) R1 C1 2. 2µF T AN T . C2 1µF T AN T . R1 O U TPU T IOUT Current Regulator IOUT = VREG + IQ R1 Order Information Part Number LM7905A LM7905 LM120A-05 LM120-05 K–Pack (TO–3) ✔ ✔ ✔ ✔ R–Pack (TO–66) ✔ ✔ ✔ ✔ G/IG–Pack SMD–Pack (TO–257) SMD1 ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ Temp. Range -55 to +150°C ” ” ” Note: To order, add the package identifier to the part number. eg. LM7905AK LM120SMD-05 Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use. Semelab encourages customers to verify that datasheets are current before placing orders. Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. E-mail: [email protected] Website: http://www.semelab.co.uk Document Number 2643 Issue: 1