Voltage Regulator VRG8684 3A LDO Adjustable Positive Voltage Regulator Released Datasheet Cobham.com/HiRel March 24, 2016 The most important thing we build is trust FEATURES Manufactured using Space Qualified RH1084 die Radiation performance - Total dose: 100 krad(Si), Dose rate = 50-300 rad(Si)/s Thermal shutdown Output voltage adjustable: 1.25V to 23V Dropout voltage: 1.80V at 3.0 Amps 3-Terminal Output current: 3.0Amps Voltage reference: 1.25V +2%, -3.2% Load regulation: 0.35% max Line regulation: 0.25% max Ripple rejection: >60dB Packaging – Hermetic Ceramic - SMD-0.5 Surface mount - 3 Pads, .400"L x .296"W x .120"Ht - Power package - Weight - 2 gm max Designed for aerospace and high reliability space applications Radiation Hardness Assurance Plan: DLA Certified to MIL-PRF-38534, Appendix G. DESCRIPTION The VRG8684 consists of a Positive Adjustable (RH1084) LDO voltage regulator capable of supplying 3.0 Amps over the output voltage range as defined under recommended operating conditions. The VRG8684 offers excellent line and load regulation specifications and ripple rejection. The VRG8684 serves a wide variety of applications including SCSI-2 Active Terminator, High Efficiency Linear Regulators, Post Regulators for Switching Supplies, Constant Current Regulators, Battery Chargers and Microprocessor Supply. The VRG8684 has been specifically designed to meet exposure to radiation environments and is configured for a SMD-0.5 SMT power package. It is guaranteed operational from -55°C to +125°C. Available screened in accordance with MIL-PRF-38534, the VRG8684 is ideal for demanding military and space applications. Dropout (VIN - VOUT) decreases at lower load currents. 3 ADJ VOUT 1 RH1084 Positive Regulator VIN 2 FIGURE 1 – BLOCK DIAGRAM / SCHEMATIC SCD8684 Rev D 1 Cobham Semiconductor Solutions www.cobham.com/HiRel ABSOLUTE MAXIMUM RATINGS Rating Units Lead temperature (soldering 10 Sec) Parameter 300 °C Input Output Differential 25 VDC Load Current, maximum 6.0 A ESD (MIL-STD-883, M3015, Class 2) 2000 to 3999 V Operating Junction Temperature Range -55 to +150 °C Storage Temperature Range -65 to +150 °C 2 °C/W Thermal Resistance (Junction to Case) JC NOTICE: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress rating only; functional operation beyond the "Operation Conditions" is not recommended and extended exposure beyond the "Operation Conditions" may effect device reliability. RECOMMENDED OPERATING CONDITIONS Parameter Output Voltage Range Input Output Differential Case Operating Temperature Range Range Units 1.25 to 23 VDC 1.8 to 24 -55 to +125 VDC °C ELECTRICAL PERFORMANCE CHARACTERISTICS 1/ UNLESS OTHERWISE SPECIFIED: -55°CTC+125°C Parameter Reference Voltage 3/, 2/ Conditions (PPMAX) Symbol VREF Min 1.5V < (VIN - VOUT) < 15V, 10mA < IOUT < 3.0A Dropout Voltage 2/ VDROP1 VREF = 1%, IOUT = 5.0A Dropout Voltage 2/ VDROP2 VREF = 1%, IOUT = 3.0A Max 1.210 1.275 - Units V 1.8 V 1.4 V Line Regulation 3/, 2/ VOUT ILOAD = 10mA, 1.5V < (VIN - VOUT) < 15V VIN - 0.5 % Load Regulation 3/, 2/ VOUT 10mA < IOUT < 3.0A, (VIN - VOUT) = 3V IOUT - 0.35 % - 120 µA 10 mA < IOUT < 3.0A, 1.5V < (VIN - VOUT) < 15V - 5 µA 10 mA Adjust Pin Current 2/ Adjust Pin Current Change 2/ Minimum Load Current 4/, 2/ IMIN (VIN - VOUT) = 25V - Current Limit 2/ ICL (VIN - VOUT) = 5V 5.25 Ripple Rejection 3/ IOUT = 3.0A, (VIN - VOUT) = 3V, f = 120Hz, CADJ = COUT = 25µF Thermal Regulation VREF Long-Term Stability 4/ A 60 - dB 30ms pulse, TC = +25°C - 0.04 %/W Burn In: TC = +125°C @ 1000hrs minimum, Tested at +25°C. - 1.0 % Notes: 1/ The manufacturer’s output current rating for the RH1084MK positive regulator integrated circuit is 5.0 Amps. For Compliance with the Current Density specifictation of MIL-STD-883 Rev. C, the electrical performance characteristics are specified at an output current of 3.0 Amps. 2/ Specification derated to reflect total dose exposure to 100 krad(Si) at +25°C. 3/ Line and load regulation are guaranteed up to the maximum power dissipation of 15W. 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. 4/ Not tested. Shall be guaranteed by design, characterization, or correlation to other tested parameters. SCD8684 Rev D 3/24/2016 2 Cobham Semiconductor Solutions www.cobham.com/HiRel (Watts) Maximum Power Dissipation VRG8684 Case Temperature (Degrees C) FIGURE 2 – MAXIMUM POWER vs CASE TEMPERATURE The maximum Power dissipation is limited by the thermal shutdown function of the regulator chip in the VRG8684. The graph above represents the achievable power before the chip shuts down. The line in the graph represents the maximum power dissipation of the VRG8684 This graph is based on the maximum junction temperature of 150°C and a thermal resistance (JC) of 2°C/W. RH1084 See Note 1/ on page 2 FIGURE 3 – RH1084 DROPOUT VOLTAGE CURVE SCD8684 Rev D 3/24/2016 3 Cobham Semiconductor Solutions www.cobham.com/HiRel RH1084 See Note 1/ on page 2 FIGURE 4 – RH1084 SHORT CIRCUIT CURRENT VIN 10µF Tant. 2 VRG8684 1 VREF VOUT R1 22µF Tant. 3 ADJ VREF = 1.25V, IADJ = 55µA +Reg = VOUT = VREF (1+R2/R1) + (IADJ x R2) R2 FIGURE 5 – BASIC RH1084 ADJUSTABLE REGULATOR APPLICATION SCD8684 Rev D 3/24/2016 4 Cobham Semiconductor Solutions www.cobham.com/HiRel 3 2 1 NOTE: Package & Lid are electrically isolated from signal pads. FIGURE 6 – VRG8684 PACKAGE OUTLINE — SURFACE MOUNT SCD8684 Rev D 3/24/2016 5 Cobham Semiconductor Solutions www.cobham.com/HiRel ORDERING INFORMATION Model DLA SMD # Screening VRG8684 - 7 - Commercial Flow, +25°C testing only VRG8684 - S - Military Temperature, -55°C to +125°C Screened in accordance with the individual Test Methods of MIL-STD-883 for Space Applications VRG8684- 201-1S 5962-0924501KXC VRG8684- 201-2S 5962-0924501KXA VRG8684- 901-1S 5962R0924501KXC VRG8684- 901-2S 5962R0924501KXA SCD8684 Rev D 3/24/2016 Package SMD-0.5 Power Pkg In accordance with DLA SMD In accordance with DLA Certified RHA Program Plan to RHA Level "R", 100 krad(Si) 6 Cobham Semiconductor Solutions www.cobham.com/HiRel REVISION HISTORY Date Revision 03/24/2016 D SCD8684 Rev D 3/24/2016 Change Description Import into Cobham format 7 Cobham Semiconductor Solutions www.cobham.com/HiRel Datasheet Definition Advanced Datasheet - Product In Development Preliminary Datasheet - Shipping Prototype Datasheet - Shipping QML & Reduced Hi-Rel For detailed performance characteristic curves, applications information and typical applications, see the latest datasheet for their RH1084, which is available on-line at www.linear.com. LT, LTC, Linear Technology and the Linear logo are registered trademarks and RH1084 is copyright Linear Technology Corporation. EXPORT CONTROL: This product is controlled for export under the Export Administration Regulations (EAR), 15 CFR Parts 730-774. A license from the Department of Commerce may be required prior to the export of this product from the United States. Cobham Semiconductor Solutions 35 S. Service Road Plainview, NY 11803 E: [email protected] T: 800 645 8862 Aeroflex Plainview Inc., DBA Cobham Semiconductor Solutions, reserves the right to make changes to any products and services described herein at any time without notice. Consult Aeroflex or an authorized sales representative to verify that the information in this data sheet is current before using this product. Aeroflex does not assume any responsibility or liability arising out of the application or use of any product or service described herein, except as expressly agreed to in writing by Aeroflex; nor does the purchase, lease, or use of a product or service from Aeroflex convey a license under any patent rights, copyrights, trademark rights, or any other of the intellectual rights of Aeroflex or of third parties. SCD8684 Rev D 3/24/2016 8 Cobham Semiconductor Solutions www.cobham.com/HiRel