RH1084 5A Low Dropout Positive Adjustable Regulator OBSOLETE: FOR INFORMATION PURPOSES ONLY Contact Linear Technology for Potential Replacement DESCRIPTION ABSOLUTE MAXIMUM RATINGS The RH1084 positive adjustable regulator is designed to provide 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. Power Dissipation ............................... Internally Limited Input-to-Output Voltage Differential .........................25V Operating Junction Temperature Range Control Section .............................. – 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 The RH1084 is pin compatible with older 3-terminal regulators. A 10μF output capacitor is required on these new device. However, this is usually included in most regulator designs. PRECONDITIONING 100% Thermal Limit Burn-In L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. The wafer lots are processed to Linear Technology Corporation’s in-house Class S flow-to-yield circuits usable in stringent military applications. BURN-IN CIRCUIT PACKAGE INFORMATION BOTTOM VIEW RH1084 12.5V IN OUT ADJ 121Ω VIN ADJ 1k 2 –12.5V CAPACITOR(S) NOT SHOWN 1 CASE IS OUTPUT RH1084 BI K PACKAGE 2-LEAD TO-3 METAL CAN Note: For ordering information contact LTC. rh1084fd 1 RH1084 TABLE 1: ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS Reference Voltage IOUT = 10mA, (VIN – VOUT) = 3V TA = 25°C SUBTYP MAX GROUP NOTES MIN 5 1.225 1.238 10mA ≤ IOUT ≤ IFULL LOAD, 1.5V ≤ (VIN – VOUT) ≤ 25V (Preirradiation) 1.250 1.262 –55°C ≤ TA ≤ 125°C SUBMIN TYP MAX GROUP UNITS 1 1.270 V 1.225 1.250 1.270 2,3 V Line Regulation ILOAD = 10mA, 1.5V ≤ (VIN – VOUT) ≤ 15V 15V ≤ (VIN – VOUT) ≤ 25V 1, 2 0.015 0.2 0.5 1 1 0.035 0.050 0.2 0.5 2,3 2,3 % % Load Regulation (VIN – VOUT) = 3V, 10mA ≤ IOUT ≤ IFULL LOAD 1,2,5 0.3 0.6 1 0.5 0.8 2,3 % Dropout Voltage ΔVREF = 1%, IOUT = IFULL LOAD 1.5 1 1.3 1.5 2,3 V Current Limit (VIN – VOUT) = 5V (VIN – VOUT) = 25V 2,3 2,3 A A 3,5 5.5 0.3 1 1 Minimum Load Current (VIN – VOUT) = 25V Thermal Regulation TA = 25°C, 30ms Pulse 0.003 Ripple Rejection f = 120Hz, CADJ = 25μF, COUT = 25μF Tantalum, IOUT = IFULL LOAD, (VIN – VOUT) = 3V Adjust Pin Current TJ = 25°C Adjust Pin Current Change 10mA ≤ IOUT ≤ IFULL LOAD, 1.5V ≤ (VIN – VOUT) ≤ 25V 5 Long Term Stability TA = 125°C, 1000 Hrs 4 RMS Output Noise (% of VOUT) TA = 25°C, 10Hz ≤ f ≤ 10kHz Thermal Resistance Control Circuitry Power Transistor 5 60 10 1 0.015 4 75 55 Temperature Stability 4 4 4 120 1 5 1 5.5 0.3 6.5 0.6 5.0 10 2,3 mA %/W 60 75 0.2 5,6 dB 120 2,3 μA 5 2,3 μA 0.5 % 0.3 % 0.003 % 0.75 2.3 °C/W °C/W Total Dose Bias Circuit 12.5V RH1084 VOUT ADJ 150Ω –12.5V RH1084 BC rh1084fd 2 RH1084 TABLE 1A: ELECTRICAL CHARACTERISTICS PARAMETER Reference Voltage (Note 5) Line Regulation (Notes 1, 2) 10KRAD(Si) MIN MAX CONDITIONS IOUT = 10mA (VIN – VOUT) = 3V 1.234 1.258 10mA ≤ IOUT ≤ IFULL LOAD, 1.5V ≤ (VIN – VOUT) ≤ 15V 1.22 ILOAD = 10mA 1.5V ≤ (VIN – VOUT) ≤ 15V 15V ≤ (VIN – VOUT) ≤ 25V (Postirradiation) TA = 25°C unless otherwise noted. 20KRAD(Si) MIN MAX 1.23 50KRAD(Si) MIN MAX 1.257 1.225 1.253 100KRAD(Si) MIN MAX 1.22 200KRAD(Si) MIN MAX UNITS 1.247 1.205 1.241 V 1.275 1.219 1.275 1.215 1.275 1.210 1.275 1.203 1.275 V 0.2 0.5 0.21 0.5 0.23 0.5 0.25 0.5 0.3 0.5 % % Load Regulation (Notes 1, 2, 5) (VIN – VOUT) = 3V 10mA ≤ IOUT ≤ IFULL LOAD 0.6 0.6 0.6 0.7 0.8 % Dropout Voltage (Note 3) ΔVREF = 1%, IOUT = FULL LOAD 1.5 1.55 1.65 1.8 2.0 V Current Limit (VIN – VOUT) = 5V (VIN – VOUT) = 25V Minimum Load Current (VIN – VOUT) = 25V 5.5 0.3 Adjust Pin Current Adjust Pin Current Change (Note 5) 10mA ≤ IOUT ≤ IFULL LOAD 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 45W for RH1084. Power dissipation is determined by the input/output differential voltage and the output current. Guaranteed maximum power dissipation will not be available over the full input/output voltage range. 5.5 0.3 5.4 0.3 5.25 0.3 5.0 0.3 A A 10 10 10 10 10 mA 120 120 120 120 120 μA 5 5 5 5 5 μA Note 3: 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 LT ®1084 data sheet. Note 4: Guaranteed by design, characterization, or correlation to other tested parameters. Note 5: IFULL LOAD is defined in the Current Limit curves in the standard data sheet. For compliance with 883 revision C current density specifications, the RH1084 is rated to 3A. TABLE 1A: ELECTRICAL CHARACTERISTICS MIL-STD-883 TEST REQUIREMENTS SUBGROUP Final Electrical Test Requirements (Method 5004) 1*,2,3,4,5,6 Group A Test Requirements (Method 5005) 1,2,3,4,5,6 Group C and D End Point Electrical Parameters (Method 5005) * PDA Applies to subgroup 1. See PDA Test Notes. 1 PDA Test Notes The PDA is specified as 5% based on failures from group A, subgroup 1, tests after cooldown 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 burn-in in that lot shall be used to determine the percent defective for the lot. Linear Technology Corporation reserves the right to test to tighter limits than those given. rh1084fd 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 RH1084 TYPICAL PERFORMANCE CHARACTERISTICS Ripple Rejection Reference Voltage 1.26 8.5 (VIN – VOUT) = 3V IOUT = IFULL LOAD 100 1.24 1.23 95 7.5 90 85 80 10 100 TOTAL DOSE – KRADS (Si) 5.0 4.5 1 10 100 TOTAL DOSE – KRADS (Si) Line Regulation Load Regulation 0.6 0.5 0.2 0.1 0 –0.1 1000 (VIN – VOUT) = 3V 10mA ≤ IOUT ≤ 5A LOAD REGULATION (%) LINE REGULATION (%) 0.7 10 100 TOTAL DOSE – KRADS (Si) 1 RH1084 G04 1000 0.05 0 –0.05 –0.10 Dropout Voltage 10 100 TOTAL DOSE – KRADS (Si) Minimum Load Current Adjust Pin Current 4 (VIN – VOUT) = 3V 10mA ≤ IL ≤ IFULL LOAD 1.4 1.2 (VIN – VOUT) = 25V MINIMUM LOAD CURRENT (mA) ADJUST PIN CURRENT (μA) IOUT = 5A 1.6 70 60 50 40 1.0 3 2 1 0 1 1000 1000 RH1084 G06 80 10 100 TOTAL DOSE – KRADS (Si) 1 RH1084 G05 1.8 1000 0.10 1.5V ≤ (VIN – VOUT) ≤ 15V IOUT = 10mA 0.8 1 10 100 TOTAL DOSE – KRADS (Si) RH1084 G03 0.3 (VIN – VOUT) = 25V CURRENT LIMIT (A) 1 1000 RH1084 G02 Current Limit DROPOUT VOLTAGE (V) 6.0 70 1000 0.9 10 100 TOTAL DOSE – KRADS (Si) 6.5 5.5 RH1084 G01 1 7.0 75 65 1 (VIN – VOUT) = 5V 8.0 CURRENT LIMIT (A) 1.25 RIPPLE REJECTION (dB) OUTPUT VOLTAGE (V) 10mA ≤ Δ ≤ IOUT ≤ IFULL LOAD 1.5V ≤ (VIN – VOUT) ≤ 15V 1.22 Current Limit 105 10 100 TOTAL DOSE – KRADS (Si) 1000 RH1084 G08 RH1084 G07 1 10 100 TOTAL DOSE – KRADS (Si) 1000 RH1084 G09 rh1084fd 4 Linear Technology Corporation ID No. 66-11-1084 • LT 0811 REV D PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com © LINEAR TECHNOLOGY CORPORATION 1996