LM1085–220M–05 LM1085–05–220M LM1085–12–220M MILITARY VERSION LOW DROPOUT 3 AMP POSITIVE VOLTAGE REGULATOR TO–220 Isolated Metal Package 4.70 5.00 0.70 0.90 FEATURES 3.56 Dia. 3.81 10.41 10.92 13.39 13.64 16.38 16.89 10.41 10.67 12.70 19.05 1 2 3 0.89 1.14 2.54 BSC 2.65 2.75 • • • • • • • 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) 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 Input Voltage 5V, 12V 30V VI-O Input–Output Differential Voltage Adjustable 35V PD Power Dissipation VIN Operating Input Voltage TJ Operating Junction Temperature Range TSTG Storage Temperature Range TLEAD Lead Temperature (for 10 sec.) Internally limited Adjustable 5 Volt 12 Volt 25V 20V 25V Control Power –55 to 150°C –55 to 200°C –65 to 150°C 300°C * 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: [email protected] 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 Output Voltage Test Conditions 5 VO Output Voltage 12 VREF Reference Voltage ADJ. 5 REG(LINE) Line Regulation 12 ADJ. 5 REG(LOAD) Load Regulation See notes 1,2 12 ADJ. 5 VD Dropout Voltage See note 3 Semelab plc. (TJ = 25°C unless otherwise stated) 12 ADJ. VIN = 6.5 to 20V Min. IO = 0 to 3A TJ = –55 to 150°C VIN = 13.5V to 25V IO = 0 to 3A TJ = –55 to 150°C VIN – VOUT = 1.5 to 15V IO = 10mA to 3A TJ = –55 to 150°C VIN = 6.5 to 20V IO = 0 TJ = –55 to 150°C VIN = 13.5 to 25V IO = 0 TJ = –55 to 150°C VIN – VOUT = 1.5 to 15V ILOAD = 10mA TJ = –55 to 150°C VIN = 8V IO = 0 to 3A TJ = –55 to 150°C VIN = 15V IO = 0 to 3A TJ = –55 to 150°C VIN – VOUT = 3V IO = 10mA to 3A TJ = –55 to 150°C DVOUT = 50mV IOUT = 3A TJ = –55 to 150°C DVOUT = 120mV IOUT = 3A TJ = –55 to 150°C DVREF = 1% IOUT = 3A TJ = –55 to 150°C Telephone +44(0)1455 556565. Fax +44(0)1455 552612. Website: http://www.semelab.co.uk E-mail: [email protected] Typ. Max. 4.90 5 5.10 11.76 12 12.24 1.225 1.25 1.270 0.5 10 1 10 1 25 2 25 0.015 0.2 0.035 0.2 5 20 10 35 12 36 24 72 0.1 0.3 0.2 0.4 1.3 1.5 1.3 1.5 1.3 1.5 Unit V mV % mV % V Prelim. 10/95 LM1085–220M–05 LM1085–05–220M LM1085–12–220M MILITARY VERSION ELECTRICAL CHARACTERISTICS Parameter ICL Current Limit IQ Quiescent Current Minimum Load Current REG(THERM) RA Output Voltage Test Conditions VIN – VOUT = 5V TJ = –55 to 150°C 3.2 4 VIN – VOUT = 25V TJ = –55 to 150°C 0.2 0.5 £ 20V VIN £ 25V TJ = –55 to 150°C 5 10 TJ = –55 to 150°C 5 10 VIN – VOUT = 25V TJ = –55 to 150°C 5 10 TP = 30ms TA = 25°C 0.004 0.02 5 TJ = –55 to 150°C VIN = 8V 60 68 12 COUT = 25mF Tantalum VIN = 15V 54 60 f = 120Hz VIN – VOUT = 3V IO = 3A CADJ = 25mF 60 75 5 12 4 ADJ. Thermal Regulation Ripple Rejection (TJ = –55 to +150°C unless otherwise stated) ADJ. VIN Min. Typ. Max. A Adjust Pin Current ADJ. DIPIN Adjust Pin Current Change ADJ. TS Temperature Stability TJ = –55 to 150°C Long Term Stability TA = 125°C T = 1000 Hrs VN RMS Output Noise f = 10Hz to 10kHz TA = 25°C 0.003 RqJC Thermal Resistance Control Circuitry TBA Junction – Case Power Transistor TBA TJ = –55 to 150°C VIN – VOUT = 1.5 to 15V IO = 10mA to 3A TJ = –55 to 150°C 120 0.2 5 %/W mA mA % 0.5 0.3 mA dB 55 IPIN Unit 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: [email protected] Prelim. 10/95