Voltage Regulator VRG8661 Adjustable Negative Voltage Regulator Released Datasheet Cobham.com/HiRel March 24, 2016 The most important thing we build is trust FEATURES Manufactured using Space Qualified RH137 die Radiation performance - Total dose: >100 krad(Si), Dose rate = 50-300 rad(Si)/s - ELDRS: > 50 krad(Si), Dose rate = 0.01 rad(Si)/s Thermal shutdown Output voltage adjustable: -1.25V to -27V 3-Terminal Output current: 1.5A Voltage reference: -1.25V ±4% Load regulation: 1.0% max Line regulation: 0.05% max Ripple rejection: >66dB 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 VRG8661 consists of a Negative Adjustable (RH137) voltage regulator capable of supplying 1.5Amps over the output voltage range as defined under recommended operating conditions. The VRG8661 offers excellent line and load regulation specifications and ripple rejection. Dropout (Vin - Vout) decreases at lower load currents. The VRG8661 serves a wide variety of applications including High Efficiency Linear Regulators, Post Regulators for Switching Supplies, Constant Current Regulators, Battery Chargers and Microprocessor Supply. The VRG8661 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 to MIL-STD-883, the VRG8661 is ideal for demanding military and space applications. 3 ADJ VOUT 2 RH137 Negative Regulator VIN 1 FIGURE 1 – BLOCK DIAGRAM / SCHEMATIC SCD8661 Rev G 1 Cobham Semiconductor Solutions www.cobham.com/HiRel ABSOLUTE MAXIMUM RATINGS PARAMETER RANGE UNITS Lead temperature (soldering 10 Sec) 300 °C Input-Output Voltage Differential -30 VDC 2.000-3.999 1/ KV Operating Junction Temperature Range -55 to +150 °C Storage Temperature Range -65 to +150 °C ESD 1/ Meets ESD testing per MIL-STD-883, method 3015, Class 2 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 RANGE UNITS Output Voltage Range -1.25 to -27 VDC Case Operating Temperature Range -55 to +125 °C ELECTRICAL PERFORMANCE CHARACTERISTICS Unless otherwise specified -55°C < TC < +125°C & (VIN-VOUT) = -5V, IOUT = 0.5A PARAMETER SYM Reference Voltage 1/ 5/ VREF CONDITIONS (P PMAX) MIN MAX UNITS -1.200 -1.300 V - 0.05 %/V - 50 mV - 1.0 % - 0.02 %/W 66 - dB - 100 µA - 5 µA (VIN - VOUT) = -27V - 5 (VIN - VOUT) < -10V - 3 (VIN - VOUT) < -15V 1.5 - (VIN - VOUT) = -27V, TC = +25°C 0.24 - - 1 % - 3 °C/W -3V < (VIN - VOUT) < VDIFF MAX, 10mA < IOUT < IMAX Line Regulation 1/ 2/ VOUT -3V < (VIN - VOUT) < -27V, VIN Load Regulation 1/ 2/ VOUT 10mA < IOUT < IMAX, VOUT < -5V IOUT 10mA < IOUT < IMAX, VOUT > -5V IOUT = 1.5A, (VIN - VOUT) = -13.3V, Thermal Regulation 20ms Pulse, 20W, TC = +25°C VOUT = -10V, f = 120Hz, CADJ = 10µF Ripple Rejection Adjustment Pin Current 1/ IADJ Adjustment Pin Current 1/ Change IADJ Minimum Load Current 1/ 3/ Current Limit 1/ 4/ Long Term Stability 3/ Thermal Resistance (Junction to Case) 3/ IMIN IMAX 10mA < IOUT < IMAX -3V < (VIN - VOUT) < -27V VOUT TA = +125°C TIME JC mA A Notes: 1/ Specification derated to reflect Total Dose exposure to 100 krad(Si) @25°C. 2/ Regulation is measured at a constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specification for thermal regulation. Measurements taken at the output lead must be adjusted for lead resistance. 3/ Not tested. Shall be guaranteed to the specified limits. 4/ Pulsed @ <10% duty cycle @ 25°C. 5/ Testing over 12 watts is not performed over + 25°C. SCD8661 Rev G 3/24/2016 2 Cobham Semiconductor Solutions www.cobham.com/HiRel 60 50 40 Maximum Power Dissipation (Watts) 30 20 10 0 0 20 40 60 80 100 120 140 Case Temperature (°C) The maximum Power dissipation is limited by the thermal shutdown function of the regulator chip in the VRG8661. The graph above represents the achievable power before the chip shuts down. The line in the graph represents the maximum power dissipation of the VRG8661 This graph is based on the maximum junction temperature of 150°C and a thermal resistance (JC) of 3°C/W. FIGURE 2 – MAXIMUM POWER vs CASE TEMPERATURE SCD8661 Rev G 3/24/2016 3 Cobham Semiconductor Solutions www.cobham.com/HiRel VIN 1 VRG8661 VREF = 1.25V, IADJ = 50µA VOUT = -VREF (1+R2/R1) + (-IADJ x R2) 2 VOUT R1 3 ADJ R2 Adjustable Regulator FIGURE 3 – TYPICAL APPLICATIONS FIGURE 4 – TYPICAL CURRENT LIMIT SCD8661 Rev G 3/24/2016 4 Cobham Semiconductor Solutions www.cobham.com/HiRel .301 MAX .095 2 Places R.025 MAX 6 Places .030 MIN 2 .405 MAX .005 .120 2 Places 3 .030 MIN 1 .225 .150 4X R.020 .005 .005 .015 3 Places .286 .127 MAX NOTES: 1. Package & Lid are electrically isolated from signal pads. 2. ESD symbol denotes Pin 1. FIGURE 5– PACKAGE OUTLINE — SURFACE MOUNT SCD8661 Rev G 3/24/2016 5 Cobham Semiconductor Solutions www.cobham.com/HiRel ORDERING INFORMATION MODEL DLA SMD # SCREENING VRG8661 - 7 - Commercial Flow, +25°C testing only VRG8661 - S - Military Temperature, -55°C to +125°C Screened in accordance with the individual Test Methods of MIL-STD-883 for Space Applications VRG8661- 201-1S 5962-0920602KXC VRG8661- 201-2S 5962-0920602KXA VRG8661- 901-1S 5962R0920602KXC VRG8661- 901-2S 5962R0920602KXA SCD8661 Rev G 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 G SCD8661 Rev G 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 RH137, which is available on-line at www.linear.com. LT, LTC, Linear Technology and the Linear logo are registered trademarks and RH137 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. SCD8661 Rev G 3/24/2016 8 Cobham Semiconductor Solutions www.cobham.com/HiRel