Voltage Regulator VRG8663 3A LDO 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 RH1185 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: -2.37 to -25V Dropout voltage: 1.05V at 3.0 Amps 5-Terminal Output current: 3A Voltage reference: -2.370V ±3% Load regulation: 0.8% max Line regulation: 0.02% max Ripple rejection: >60dB Packaging - Hermetic Surface Mount Power Package - 5 Pads, .545"L x .296"W x .120"Ht - Weight - 1.2 gm max Designed for aerospace and high reliability space applications Radiation Hardness Assurance Plan: DLA Certified to MIL-PRF-38534, Appendix G. DESCRIPTION The VRG8663 consists of a Negative Adjustable (RH1185) LDO voltage regulator capable of supplying 3.0 Amps over the output voltage range as defined under recommended operating conditions. The VRG8663 offers excellent line and load regulation specifications and ripple rejection. Dropout (VIN - VOUT) decreases at lower load currents. The VRG8663 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 VRG8663 has been specifically designed to meet exposure to radiation environments and is configured for a SMD power package. It is guaranteed operational from -55°C to +125°C. Available screened to MIL-STD-883, the VRG8663 is ideal for demanding military and space applications. 3 VOUT VIN 5 Reference 2 Feedback 1 RH1185 GND 4 FIGURE 1 – BLOCK DIAGRAM / SCHEMATIC SCD8663 Rev H 1 Cobham Semiconductor Solutions www.cobham.com/HiRel ABSOLUTE MAXIMUM RATINGS PARAMETER RANGE UNITS Input Voltage -35 VDC Lead temperature (soldering 10 Sec) 300 °C Input Output Differential 30 VDC Feedback & Reference Voltage -7 VDC Output Voltage -30 VDC 2000 1/ V 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 1. 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 -2.45 to -25 VDC 1 to 28 VDC -55 to +125 °C Input Output Differential Case Operating Temperature Range ELECTRICAL PERFORMANCE CHARACTERISTICS Unless otherwise specified, -55°C < Tc < +125°C. PARAMETER Reference Voltage (At pin 6) 2/ 7/ Dropout Voltage Line Regulation MAX UNITS -2.29 -2.45 V IOUT = 0.5A, VOUT = -5V - 0.425 V IOUT = 3A, VOUT = -5V - 1.05 V VOUT 1.0V < VIN - VOUT < 20V, VOUT = -5V VIN - 0.02 %/V VOUT 5mA < IOUT < 3A, VIN - VOUT = 1.5V to 10V, VOUT = -5V IOUT - 0.8 % VIN MIN IOUT = 3A , VOUT = VREF - -4.50 V 1.5V < VIN - VOUT < 10V 3.3 4.55 A VIN - VOUT = 15V 2.0 4.5 A VIN - VOUT = 20V 1.0 3.1 A VIN - VOUT = 28V 3/ 0.2 1.6 A RLIM = 5KW 10/ 2.7 3.7 A RLIM = 15KW 10/ 0.9 1.75 A - 3.5 mA VREF 2/ 4/ 2/ 8/ Load Regulation 2/ 8/ Minimum Input Voltage 2/ 5/ Internal Current Limit (See Figure 4) 2/ 11/ External Current Limit 2/ Quiescent Supply Current 2/ 6/ SCD8663 Rev H 3/24/2016 CONDITIONS (P PMAX) MIN SYM VDROP ICL ILIM IQ 1mA < IOUT < 3A, VIN - VOUT = 1.2V to 28V, VOUT = -5V IOUT = 5mA, VOUT = VREF, -4V < VIN < -25V 2 Cobham Semiconductor Solutions www.cobham.com/HiRel ELECTRICAL PERFORMANCE CHARACTERISTICS Unless otherwise specified, -55°C < Tc < +125°C. PARAMETER CONDITIONS (P PMAX) SYM Supply Current Change with Load 2/ IQ VIN – VOUT = VSAT 9/ VIN – VOUT Š 2V Ripple Rejection - IOUT = 1.0A, VIN - VOUT = 3V, f = 120Hz, Thermal Regulation (See application info LT1185) 3/ - VIN – VOUT = 10V, IOUT = 5mA to 2A, TC = +25°C Thermal Resistance (Junction to Case) JC MIN MAX UNITS - 35 mA/A - 21 mA/A 60 - dB - 0.014 %/W - 3 °C/W Notes: 1/ Meets ESD testing per MIL-STD-883, method 3015, Class 2. 2/ Specifications derated to reflect Total Dose exposure to 100 krad(Si) @ +25°C. 3/ Not tested. Shall be guaranteed by design, characterization, or correlation to other tested parameters. 4/ Dropout voltage is tested by reducing input voltage until the output drops 1% below its nominal value. Tests are done at 0.5A and 3A. The power transistor looks basically like a pure resistance in this range so that minimum differential at any intermediate current can be calculated by interpolation; VDROPOUT = 0.25V + (0.25 x IOUT). For load current less than 0.5A, see Figure 3. 5/ “Minimum input voltage” is limited by base emitter voltage drive of the power transistor section, not saturation as measured in Note 4. For output voltages below 4V, “minimum input voltage” specification may limit dropout voltage before transistor saturation limitation. 6/ Supply current is measured on the ground pin, and does not include load current, RLIM, or output divider current. 7/ The 25W power level is guaranteed for an input-output voltage of 8.3V to 17V. At lower voltages the 3Amp limit applies, and at higher voltages the internal power limiting may restrict regulator power below 25W. 8/ Line and load regulation are measured on a pulse basis with a pulse width of 2ms, to minimize heating. DC regulation will be affected by thermal regulation and temperature coefficient of the reference. 9/ VSAT is the maximum specified dropout voltage: 0.25V + (0.25 x IOUT). 10/ Current limit is programmed with a resistor from REF pin to GND pin. RLIM = 15k/ILIM. 11/ Pulsed @<10% duty cycle @25°C. 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 VRG8663. The graph above represents the achievable power before the chip shuts down. The line in the graph represents the maximum power dissipation of the VRG8663 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 SCD8663 Rev H 3/24/2016 3 Cobham Semiconductor Solutions www.cobham.com/HiRel FIGURE 3 – RH1185 DROPOUT VOLTAGE TYPICAL CURVE FIGURE 4 – RH1185 INTERNAL CURRENT LIMIT + The RH1185 output voltage is set by two external resistors. The internal reference voltage is trimmed to 2.37V so that a standard 1% 2.37k resistor (R1) can be used to set divider current at 1mA. R2 is then selected from: (VOUT - 2.37) R1 VREF for R1 = 2.37k and VREF = 2.37V, this reduces to: R2 = R2 = VOUT - 2.37 + – suggested values of 1% resistors are shown below: VOUT R2 when R1 = 2.37k 2.5V 3.3V 5V 12V 15V 130 930 2.67k 9.76k 12.7k C1 VIN 5 + Parasitic Lead Resistance ra RLIM + 2 4 R2 GND 1 FB VIN - rb + IGND C2 R1* 2.37k Load VOUT R2 VRG8663 (RH1185) VOUT 3 – *R1 should be connected directly to ground lead, not to the load, so that ra = 0 . This limits the output voltage error to (IGND)(rb). Errors created by ra are multiplied by (1 + R2/R1). Note that VOUT increases with increasing ground pin current. R2 should be connected directly to load for remote sensing. C1 = C2 Š 2µF Tantalum. SETTING OUTPUT VOLTAGE R1 & R2 LOCATION & PROPER CONNECTION OF POSITIVE SENSE LEAD FIGURE 5 – BASIC VRG8663 ADJUSTABLE REGULATOR APPLICATION SCD8663 Rev H 3/24/2016 4 Cobham Semiconductor Solutions www.cobham.com/HiRel .301 MAX PAD 1 .095 4 Places R.025 MAX 6 Places .030 MIN 4 1 .005 .120 4 Places .030 MIN .550 MAX 5 .200 .005 .030 MIN 3 2 .150 4X R.020 .005 .015 3 Places .127 MAX .005 .286 NOTE 1. Package & Lid are electrically isolated from signal pads. FIGURE 6 – PACKAGE OUTLINE — SURFACE MOUNT SCD8663 Rev H 3/24/2016 5 Cobham Semiconductor Solutions www.cobham.com/HiRel ORDERING INFORMATION MODEL DLA SMD # SCREENING VRG8663 - 7 - Commercial Flow, +25°C testing only VRG8663 - S - Military Temperature, -55°C to +125°C Screened in accordance with the individual Test Methods of MIL-STD-883 for Space Applications VRG8663- 201-1S 5962-0920702KYC VRG8663- 201-2S 5962-0920702KYA VRG8663- 901-1S 5962R0920702KYC VRG8663- 901-2S 5962R0920702KYA SCD8663 Rev H 3/24/2016 PACKAGE SMD 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 H SCD8663 Rev H 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 RH1185, which is available on-line at www.linear.com. LT, LTC, Linear Technology and the Linear logo are registered trademarks and RH1185 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. SCD8663 Rev H 3/24/2016 8 Cobham Semiconductor Solutions www.cobham.com/HiRel