LM1084HN MECHANICAL DATA Dimensions in mm 6.86 (0.270) 6.09 (0.240) 4.19 (0.165) 3.94 (0.155) Dia. 21.21 (0.835) 20.70 (0.815) 13.84 (0.545) 13.58 (0.535) 1 2 3 1.14 (0.707) 0.88 (0.035) FEATURES 19.05 (0.750) 12.70 (0.500) 17.96 (0.707) 17.70 (0.697) 17.65 (0.695) 17.39 (0.685) 5 AMP LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR IN TO258 HERMETIC PACKAGE • Ajustable Output Voltage • Output Voltage Tolerance ±1% • Hermetic Isolated TO258 5.08 (0.200) BSC 3.56 (0.140) BSC 1.65 (0.065) 1.39 (0.055) Typ. • Short Circuit Current Limit • Low Dropout Voltage TO–258 METAL PACKAGE Pin 1– Adjust Pin 2 – Vout • Built in Thermal Overload Protection Pin 3 – Vin • 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. 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 Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. Website: http://www.semelab.co.uk E-mail: [email protected] 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 02/00 LM1084HN ELECTRICAL CHARACTERISTICS (Per Diode) Parameter Test Conditions Min. VIN - VOUT =3.0V VREF Reference Voltage IOUT = 10mA 1.5V £ VIN - VOUT £ 25V 10mA £ IOUT £ IFL 1.5 £ VIN - VOUT £ 15V VOUT Line Regulation (Note 1) VIN 1.238 TA = 25°C IOUT = 10mA TA = 25°C • 1.225 • Load Regulation VDO VIN IOUT = IFL Thermal Regulation 30ms pulse Ripple Rejection VOUT 0.3 % • 0.4 • 1.5 V 0.015 %W TA = +25°C f = 120Hz, CAdj = 25mF COUT = 25mF (tantalum), IFL = 3.0A • 60 dB VIN - VOUT =3.0V IAdj Ajust Pin Current 3I Adj Ajust Pin Current Change IMin Minimum Load Current ILim Current Limit VOUT Temperature Stability (Note 2) T VOUT VREF = 1% D 1.270 0.5 10mA £ IOUT £ IFL Dropout Voltage 1.262 % TA = 25°C VIN Unit 0.2 IOUT =10mA VOUT Max. V 15V £ VIN - VOUT £ 35V VIN - VOUT =3.0V Typ. Long Term Stability (Note 2) T 1.5V £ VIN - VOUT £ 25V • 120 m A • 5.0 m A 10 mA VIN - VOUT = 25V • • • Tj = -55 to +125°C • 10mA £ IOUT £ IFL 1.5V £ VIN - VOUT £ 25V 10mA £ IOUT £ IFL VIN - VOUT = 25V VIN - VOUT = 5.0V 5.5 A 0.3 1.5 % TA = +125°C, t = 1000hrs 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: [email protected] 02/00