RH1083M 7.5A Low Dropout Positive Adjustable Regulator U DESCRIPTIO ABSOLUTE W Unlike PNP regulators, where up to 10% of the output current is wasted as quiescent current, the RH1083M quiescent current flows into the load, increasing efficiency. Since the TO-3 package on this product cannot meet the cracked glass external visual criteria of MIL-STD-883 Method 2009, inspection for cracked glass at 100% external visual will not be performed. Instead a 100% fine/gross leak test will be performed just prior to shipment. W W The RH1083M is pin compatible with older 3-terminal regulators. A 10μF output capacitor is required on this new device. However, this is usually included in most regulator designs. The wafer lots are processed to Linear Technology Corporation’s in-house Class S flow-to-yield circuits usable in stringent military applications. AXI U U The RH1083M positive adjustable regulator is designed to provide 7.5A 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 output voltage to 1%. Current limit is also trimmed, minimizing the stress on both the regulator and power source circuitry under overload conditions. RATI GS Power Dissipation .............................. Internally Limited Input-to-Output Voltage Differential ........................ 30V Operating Junction Temperature Range Control Circuitry ............................ – 55°C to 150°C Power Transistor ........................... – 55°C to 200°C Storage Temperature Range ................ – 65°C to 150°C Lead Temperature (Soldering, 10 sec.)................ 300°C , LTC and LT are registered trademarks of Linear Technology Corporation. W PACKAGE I FOR ATIO U U U U BUR -I CIRCUIT BOTTOM VIEW VIN RH1083M 18V IN OUT 2 CASE IS OUTPUT ADJ 121Ω –18V 1 1k ADJ CAPACITOR(S) NOT SHOWN RH1083 BI K PACKAGE 2-LEAD TO-3 METAL CAN (STEEL) 1 RH1083M TABLE 1: ELECTRICAL CHARACTERISTICS PARAMETER Reference Voltage CONDITIONS IOUT = 10mA, (VIN – VOUT) = 3V NOTES 3 MIN (Preirradiation) TJ = 25°C TYP MAX SUB- –55°C ≤ TJ ≤ 125°C SUBGROUP MIN TYP MAX GROUP 1.238 1.250 1.262 1 10mA ≤ IOUT ≤ IFULLLOAD, 1.5V ≤ (VIN – VOUT) ≤ 25V Line Regulation ILOAD = 10mA 1.5V ≤ (VIN – VOUT) = 15V 15V ≤ (VIN – VOUT) = 30V Load Regulation (VIN – VOUT) = 3V 10mA ≤ IOUT ≤ IFULLLOAD Dropout Voltage ΔVREF = 1%, IOUT = IFULLLOAD Current Limit (VIN – VOUT) = 5V (VIN – VOUT) = 25V Minimum Load Current (VIN – VOUT) = 25V Thermal Regulation TA = 25°C, 30ms Pulse Ripple Rejection f = 120Hz, CADJ = 25μF, COUT = 25μF Tantalum, IOUT = IFULLLOAD (VIN – VOUT) = 3V 1,2 0.015 1,2,3 0.1 0.2 0.5 4 TA = 125°C, 1000 Hours RMS Output Noise (% of VOUT) TA = 25°C, 10Hz ≤ f ≤ 10kHz Thermal Resistance Junction-to-Case Control Circuitry Power Transistor 0.2 0.4 2,3 % 1.5 2,3 V 2,3 2,3 A A 2,3 mA 9.5 1.0 5.0 10 1 120 1 5 1 0.003 8.0 0.4 1 4 %/W 60 75 0.2 5,6 dB 120 2,3 μA 5.0 2,3 μA 0.5 % 0.3 % % 5 5 0.6 1.6 TOTAL DOSE BIAS CIRCUIT 15V VIN VOUT 150Ω –15V 2 % % 1.3 60 ADJ 2,3 2,3 0.2 0.5 1 0.002 0.010 RH1083 0.035 0.05 1 Temperature Stability Long-Term Stability V 0.3 10 55 2,3 1 1 1 1 Adjust Pin Current Change 10mA ≤ IOUT ≤ IFULLLOAD, 1.5V ≤ (VIN – VOUT) ≤ 25V V 1.225 1.250 1.270 1.5 8.0 0.4 Adjust Pin Current UNITS RH1083 TDBC °C/W °C/W RH1083M TABLE 1A: ELECTRICAL CHARACTERISTICS (Postirradiation) PARAMETER CONDITIONS 10KRAD(Si) MIN MAX 20KRAD(Si) MIN MAX 50KRAD(Si) MIN MAX Reference Voltage (Note 3) IOUT = 10mA (VIN – VOUT) = 3V 1.234 1.258 1.232 1.257 1.227 1.253 1.223 1.247 1.216 1.241 V 10mA ≤ IOUT ≤ IFULLLOAD 1.5V ≤ (VIN – VOUT) ≤ 15V 1.210 1.275 1.219 1.275 1.215 1.275 1.210 1.275 1.203 1.275 V Line Regulation (Notes 1, 2) Load Regulation (Notes 1, 2, 3) IOUT = 10mA 1.5V ≤ (VIN – VOUT) ≤ 15V 15V ≤ (VIN – VOUT) ≤ 30V (VIN – VOUT) = 3V 10mA ≤ IOUT ≤ IFULL LOAD Dropout Voltage (Note 4) ΔVREF = 1%, IOUT = IFULL LOAD Current Limit (VIN – VOUT ) = 5V (VIN – VOUT ) = 25V Minimum Load Current (VIN – VOUT ) = 25V Adjust Pin Current Change (Note 5) 200KRAD(Si) MIN MAX UNITS 0.2 0.5 0.21 0.5 0.23 0.5 0.25 0.5 0.3 0.5 % % 0.3 0.3 0.3 0.35 0.4 % 1.5 8 0.4 Adjust Pin Current 100KRAD(Si) MIN MAX 1.55 8 0.4 1.65 7.95 0.4 1.8 7.85 0.4 2.0 7.75 0.4 V V V 10 10 10 10 10 mA 120 120 120 120 120 μA 5 5 5 5 5 μA 10mA ≤ IOUT ≤ IFULLLOAD 1.5V ≤ (VIN – VOUT) ≤ 15V Note 1: See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant junction temperature by low duty cycle pulse testing. Note 2: Line and load regulation are guaranteed up to the maximum power dissipation of 60W for RH1083M. Power dissipation is determined by the input-to-output differential voltage and the output current. Guaranteed maximum power dissipation will not be available over the full input-tooutput voltage range. Note 3: IFULL LOAD is defined in the current limit curves in the standard data sheet. IFULLLOAD curve is defined as the minimum value of current limit as a function of input-to-output voltage. Note that the 60W power dissipation for the RH1083M is achievable over a limited range of input-tooutput voltage. For compliance with 883 revision C current density specifications, the RH1083M is rated for 5A. Note 4: Dropout voltage is specified over the full output current range of the device. Test points and limits are shown on the Dropout Voltage curve in the standard data sheet. Note 5: Guaranteed by design, characterization, or correlation to other tested parameters. U W TABLE 2: ELECTRICAL TEST REQUIRE E TS MIL-STD-883 TEST REQUIREMENTS SUBGROUP Final Electrical Test Requirements (Method 5004) 1*,2,3 Group A Test Requirements (Method 5005) 1,2,3 Group C and D End-Point Electrical Parameters (Method 5005) 1,2,3 * PDA Applies to subgroup 1. See PDA Test Notes. PDA Test Notes The PDA is specified as 5% based on failures from group A, subgroup 1, tests after cooldown as the final electrical test in accordance with method 5004 of MIL-STD-883 Class B. The verified failures of group A, subgroup 1, after burn-in divided by the total number of devices submitted for burnin in that lot shall be used to determine the percent for the lot. Linear Technology Corporation reserves the right to test to tighter limits than those given. Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. 3 RH1083M U W TYPICAL PERFORMANCE CHARACTERISTICS Reference Voltage Ripple Rejection 1.26 10mA ≤ Δ ≤ IOUT ≤ IFULLLOAD 1.5V ≤ (VIN – VOUT) ≤ 15V 10.0 (VIN – VOUT) = 3V IOUT = IFULLLOAD 100 1.24 1.23 (VIN – VOUT) = 5V 9.5 95 CURRENT LIMIT (A) 1.25 RIPPLE REJECTION (dB) REFERENCE VOLTAGE (V) Current Limit 105 90 85 80 9.0 8.5 75 70 1 10 100 TOTAL DOSE – Krad (Si) 8.0 65 1000 1 10 100 TOTAL DOSE – Krad (Si) RH1083 G01 Current Limit Line Regulation 1.5V ≤ (VIN – VOUT) ≤ 15V IOUT = 10mA 0.7 1 10 100 TOTAL DOSE – Krad (Si) 1000 LOAD REGULATION (%) 0.8 (VIN – VOUT) = 3V 10mA ≤ IOUT = 7.5A 0.2 LINE REGULATION (%) CURRENT LIMIT (A) Load Regulation 0.2 (VIN – VOUT) = 25V 0.9 0.1 0 –0.1 1 10 100 TOTAL DOSE – Krad (Si) RH1083 G04 1000 0.1 0 –0.1 –0.2 Dropout Voltage Adjust Pin Current Minimum Load Current ADJUST PIN CURRENT (μA) (VIN – VOUT) = 3V 10mA ≤ IL ≤ IFULLLOAD 1.2 1.0 (VIN – VOUT) = 25V 70 60 50 40 1 10 100 TOTAL DOSE – Krad (Si) 1000 RH1083 G07 1000 4 IOUT = 7.5A 1.4 10 100 TOTAL DOSE – Krad (Si) RH1083 G06 80 1.6 1 RH1083 G05 1.8 1000 RH1083 G03 0.3 1.0 10 100 TOTAL DOSE – Krad (Si) RH1083 G02 1.1 DROPOUT VOLTAGE (V) 1 1000 MINIMUM LOAD CURRENT (mA) 1.22 3 2 1 0 1 10 100 TOTAL DOSE – Krad (Si) 1000 RH1083 G08 1 10 100 TOTAL DOSE – Krad (Si) 1000 RH1083 G09 I.D. No. 66-11-1083 0796 4 Linear Technology Corporation LT/HP 500 0796 • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● TELEX: 499-3977 © LINEAR TECHNOLOGY CORPORATION 1996