LM1085-220M

LM1085–220M–05 LM1085–05–220M LM1085–12–220M MILITARY VERSION TO–220 Isolated Metal Package 10.41 10.67 4.70 5.00 0.70 0.90 3.56 Dia. 3.81 10.41 10.92 LOW DROPOUT 3 AMP POSITIVE VOLTAGE REGULATOR FEATURES • • • • • • • Low Dropout Performance Fixed or Adjustable Voltages Fixed Output Voltages of 5V & 12V Output Current 3A Line Regulation 0.015% / V Typical. Load Regulation 0.1% Typical. Military Temperature Range (–55 to +150°C) 16.38 16.89 13.39 13.64 123 12.70 19.05 0.89 1.14 2.54 BSC 2.65 2.75 BLOCK DIAGRAM VIN Pinouts Pin 1 2 3 Fixed Adjustable GROUND ADJUST OUTPUT OUTPUT INPUT INPUT Case is ISOLATED THERMAL LIMIT Ordering Information LM1085–220M LM1085–05–220M LM1085–12–220M Positive Adjustable Regulator Fixed +5V Regulator Fixed +12V Regulator VADJ VOUT ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated) VIN VI-O PD VIN Input Voltage Input–Output Differential Voltage Power Dissipation Operating Input Voltage Adjustable 5 Volt 12 Volt Control Power 5V, 12V Adjustable 30V 35V Internally limited 25V 20V 25V –55 to 150°C –55 to 200°C –65 to 150°C 300°C TJ TSTG TLEAD Operating Junction Temperature Range Storage Temperature Range Lead Temperature (for 10 sec.) * Although the devices’ maximum operating voltage is limited (20V for the 5V device, and 25V for the 12V and adjustable devices) the devices are guaranteed to withstand transient input voltages up to 30V. For input voltages greater than the maximum operating input voltage, some degradation of specifications will occur. For 5V and 12V devices operating at input-output voltage differentials >15V, a minimum external load of 5mA is required to maintain regulation. Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. Website: http://www.semelab.co.uk E-mail: sales@semelab.co.uk Prelim. 10/95 LM1085–220M–05 LM1085–05–220M LM1085–12–220M MILITARY VERSION DESCRIPTION The LM1085 is designed to provide 3A with higher efficiency than currently available devices. All internal circuitry is designed to operate down to 1V input to output differential and the dropout voltage is fully specified as a function of load current. Dropout is guaranteed at a maximum of 1.5V at maximum output current, decreasing at lower load currents. On-chip trimming adjusts the reference output voltage to 1%. Current limit is also trimmed, minimising the stress on both the regulator and power source circuitry under overload conditions. The LM1085 is pin compatible with older 3 terminal adjustable regulators. A 10m F output capacitor is required on these new devices; however, this is usually included in most regulator designs. Unlike PNP regulators, where up to 10% of the output current is wasted as quiescent current, the LM1085 quiescent current flows into the load, increasing efficiency. ELECTRICAL CHARACTERISTICS Parameter (TJ = 25°C unless otherwise stated) Min. IO = 0 to 3A IO = 0 to 3A IO = 10mA to 3A 4.90 Output Voltage Test Conditions 5 VIN = 6.5 to 20V TJ = –55 to 150°C VIN = 13.5V to 25V TJ = –55 to 150°C VIN – VOUT = 1.5 to 15V TJ = –55 to 150°C VIN = 6.5 to 20V IO = 0 VIN = 13.5 to 25V IO = 0 VIN – VOUT = 1.5 to 15V ILOAD = 10mA VIN = 8V IO = 0 to 3A VIN = 15V IO = 0 to 3A VIN – VOUT = 3V IO = 10mA to 3A TJ = –55 to 150°C TJ = –55 to 150°C TJ = –55 to 150°C TJ = –55 to 150°C TJ = –55 to 150°C TJ = –55 to 150°C TJ = –55 to 150°C TJ = –55 to 150°C TJ = –55 to 150°C Typ. Max. 5 5.10 Unit VO Output Voltage 12 11.76 12 12.24 V VREF Reference Voltage ADJ. 1.225 1.25 0.5 1 1 2 0.015 0.035 5 10 12 24 0.1 0.2 1.3 1.270 10 10 25 25 0.2 0.2 20 35 36 72 0.3 0.4 1.5 % mV % mV 5 REG(LINE) Line Regulation 12 ADJ. 5 REG(LOAD) Load Regulation 12 See notes 1,2 ADJ. 5 DVOUT = 50mV IOUT = 3A VD Dropout Voltage 12 DVOUT = 120mV IOUT = 3A 1.3 1.5 V See note 3 ADJ. DVREF = 1% IOUT = 3A 1.3 1.5 Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. Website: http://www.semelab.co.uk E-mail: sales@semelab.co.uk Prelim. 10/95 LM1085–220M–05 LM1085–05–220M LM1085–12–220M MILITARY VERSION ELECTRICAL CHARACTERISTICS Parameter ICL IQ Current Limit Quiescent Current Minimum Load Current REG(THERM) 4 (TJ = –55 to +150°C unless otherwise stated) Min. TJ = –55 to 150°C TJ = –55 to 150°C TJ = –55 to 150°C TJ = –55 to 150°C TJ = –55 to 150°C TA = 25°C VIN = 8V VIN = 15V VIN – VOUT = 3V CADJ = 25mF TJ = –55 to 150°C 60 54 60 3.2 0.2 Output Voltage Test Conditions VIN – VOUT = 5V VIN – VOUT = 25V 5 12 ADJ. Typ. Max. 4 0.5 5 5 5 0.004 68 60 75 55 120 0.2 0.5 5 10 10 10 0.02 Unit A £ 20V VIN £ 25V VIN VIN – VOUT = 25V TP = 30ms TJ = –55 to 150°C COUT = 25mF Tantalum f = 120Hz IO = 3A mA Thermal Regulation 5 12 ADJ. %/W RA Ripple Rejection dB IPIN Adjust Pin Current Adjust Pin Current Change Temperature Stability Long Term Stability RMS Output Noise Thermal Resistance Junction – Case ADJ. mA mA % DIPIN TS VN RqJC ADJ. VIN – VOUT = 1.5 to 15V IO = 10mA to 3A TJ = –55 to 150°C TA = 125°C f = 10Hz to 10kHz T = 1000 Hrs TA = 25°C Control Circuitry Power Transistor TJ = –55 to 150°C 0.3 0.003 TBA TBA 1 % % °C/W Notes: 1. See thermal regulation specifications for changes in output voltage due to heating effects. Load and line regulation are measured at a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead » 1/8” from the package. 2. Line and load regulation are guaranteed up to the maximum power dissipation of 30W. Power dissipation is determined by the input - output differential and the output current. Guaranteed maximum power dissipation will not be available over the full input - output voltage range. 3. Dropout voltage is specified over the full output current range of the device. Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. Website: http://www.semelab.co.uk E-mail: sales@semelab.co.uk Prelim. 10/95