LM1084HN

LM1084HN MECHANICAL DATA Dimensions in mm 17.65 (0.695) 17.39 (0.685) 6.86 (0.270) 6.09 (0.240) 1.14 (0.707) 0.88 (0.035) 5 AMP LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR IN TO258 HERMETIC PACKAGE 17.96 (0.707) 17.70 (0.697) 13.84 (0.545) 13.58 (0.535) 123 4.19 (0.165) 3.94 (0.155) Dia. 21.21 (0.835) 20.70 (0.815) 19.05 (0.750) 12.70 (0.500) FEATURES • Ajustable Output Voltage • Output Voltage Tolerance ±1% • Hermetic Isolated TO258 5.08 (0.200) BSC 1.65 (0.065) 1.39 (0.055) Typ. 3.56 (0.140) BSC • Built in Thermal Overload Protection • Short Circuit Current Limit • Low Dropout Voltage • Screening Options Available The LM1084HN low drop positive adjustable regulator is designed to provide 5A with higher efficiency than a standard device. All internal circuitry is designed to operate down to 1V input/output differential. TO–258 METAL PACKAGE Pin 1– Adjust Pin 2 – Vout Pin 3 – Vin ABSOLUTE MAXIMUM RATINGS @25°C Power Dissipation (Pd) Input - Output Voltage Differential Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering 10 seconds) Thermal Resistance: qjc (Isolated) qjc (Non-Isolated) Maximum Output Current Internally Limited 35V -55°C to + 150°C -65°C to + 150°C 300°C 2.75°C/W 2.3°C/W 5.0A Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. Website: http://www.semelab.co.uk E-mail: sales@semelab.co.uk 02/00 LM1084HN ELECTRICAL CHARACTERISTICS (Per Diode) Parameter Test Conditions VIN - VOUT =3.0V VREF Reference Voltage IOUT = 10mA TA = 25°C 1.5V £ VIN - VOUT £ 25V 10mA £ IOUT £ IFL 1.5 £ VIN - VOUT £ 15V VOUT VIN Line Regulation (Note 1) IOUT = 10mA TA = 25°C 15V £ VIN - VOUT £ 35V IOUT =10mA VIN - VOUT =3.0V VOUT VIN VDO Dropout Voltage Thermal Regulation VIN VOUT IAdj 3I Adj Min. 1.238 Typ. Max. 1.262 Unit V • • 1.225 1.270 0.2 % 0.5 0.3 % TA = 25°C Load Regulation 10mA £ IOUT £ IFL • IOUT = IFL 30ms pulse D 0.4 1.5 0.015 60 V %W dB VREF = 1% • TA = +25°C Ripple Rejection f = 120Hz, CAdj = 25mF COUT = 25mF (tantalum), IFL = 3.0A • VIN - VOUT =3.0V 1.5V £ VIN - VOUT £ 25V 10mA £ IOUT £ IFL 1.5V £ VIN - VOUT £ 25V 10mA £ IOUT £ IFL VIN - VOUT = 25V VIN - VOUT = 5.0V VIN - VOUT = 25V Tj = -55 to +125°C TA = +125°C, t = 1000hrs Ajust Pin Current Ajust Pin Current Change Minimum Load Current Current Limit Temperature Stability (Note 2) Long Term Stability (Note 2) • • • • • • 5.5 0.3 120 5.0 10 m A A m IMin ILim VOUT T VOUT T mA A 1.5 % 1.0 Notes: 1 Line and Load Regulation are measured at a constant junction temperature using a low duty cycle pulse technique. Power dissipation is internally limted. Regulation is guaranteed up to maximum power dissipation of 45 W. Power dissipation is determined by the input/output differential voltage and the output current. Guaranteed maximum power dissipation is not available over the full input/output voltage range. 2 Guaranteed by design, characterization or correlation to other tested parameters. 3 • Specification applies over the full operating temperature range. 4 IFL is defined as the minimum value of current limit as a function of input to output voltage. Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. Website: http://www.semelab.co.uk E-mail: sales@semelab.co.uk 02/00