LM7905XE 1.5 AMP NEGATIVE VOLTAGE REGULATOR MECHANICAL DATA Dimensions in mm (inches) FEATURES 9.14 (0.360) 8.64 (0.340) 1.27 (0.050) 1.07 (0.040) ≈ 2.16 (0.085) 12 13 14 15 16 1.39 (0.055) 1.02 (0.040) 7.62 (0.300) 7.12 (0.280) 11 17 10 18 9 1 2 8 7 6 5 1.39 (0.055) 1.15 (0.045) 4 3 1.65 (0.065) 1.40 (0.055) • OUTPUT VOLTAGE OF -5V • THERMAL OVERLOAD PROTECTION • SHORT CIRCUIT PROTECTION3 • OUTPUT TRANSISTOR SOA PROTECTION 0.76 (0.030) 0.51 (0.020) 0.33 (0.013) Rad. 0.08 (0.003) 0.43 (0.017) 0.18 (0.007 Rad. LCC4 CERAMIC SURFACE MOUNT Pins 4,5 – VOUT Pins 6,7,8,9,10,11,12,13 – GND – VIN Pins 15,16,17,18,1,2 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 6044 Issue: 2 LM7905XE Parameter VO Test Conditions Output Voltage Min. IO = 500mA VIN = -10V IO = 5mA to IMAX VIN = -7.5V to -20V PD ≤ PMAX TJ = -55 to 150°C -4.9 ∆VO Line Regulation 3 50 1 25 TJ = -55 to 150°C 2 50 IO = 5mA to 1.5A 25 100 25 100 1 1.9 1 2 0.2 0.4 0.2 0.5 VIN = -8V to -12V ∆VO Load Regulation VIN = -10V IO = 5mA to IMAX TJ = -55 to 150°C IQ ∆IQ VN ∆VIN ∆VO Quiescent Current Isc Ipk TJ = -55 to 150°C Quiescent Current IO = 5mA to IMAX Change VIN = -10V Output Noise f = 10Hz to 100kHz Voltage VIN = -10V Ripple Rejection TJ = -55 to 150°C f = 120Hz IO ≤ IMAX VIN = -8V to -18V IO ≤ 0.5 IMAX V mV mV mA mA µV 100 TJ = -55 to 150°C Dropout Voltage RO IO ≤ 0.5 IMAX VIN = -10V -5.2 25 VIN = -7.5V to -20V Units -5.1 3 TJ = -55 to 150°C IO ≤ IMAX -5 -4.8 VIN = -7V to -25V IO = 0.5 IMAX LM7905XE Typ. Max. 54 dB 54 IO = IMAX Output Resistance f = 1 kHz 1.4 V 5 mΩ Short Circuit VIN = -35V Current 0.6 1.2 A Peak Output Current Average VIN = -10V 2.4 IO = 5mA 0.2 3.3 Temperature Coefficient of VO Input Voltage required to maintain line regulation IO ≤ IMAX mV °C V -7.3 1) All characteristics are measured with a capacitor across the input of 0.22µF and a capacitor across the output of 0.1µF. 2) All characteristics except noise voltage and ripple rejection ratio are measured using pulse techniques (tp ≤ 10ms, δ ≤ 5%). Output voltage changes due to changes in internal temperature must be taken into account separately. 3) External current limiting circuitry may be required in order to maintain safe area of operation. 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 6044 Issue: 2 LM7905XE APPLICATIONS INFORMATION I N PU T VOU T VIN OUTPUT I N PU T GND C1 * 2. 2µF T AN T . GND C2 * * 1 µF TANT. Fixed Output Regulator * VOU T VIN Required if the regulator is located far from the power supply. ** Required for stability. 25µF electrolytic may be substituted. C1 2. 2µF T AN T . OUTPUT I N PU T GND R1 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 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 6044 Issue: 2