SCD8662 Rev G
❑Manufactured using Space Qualified RH1086 die
❑Radiation performance
- Total dose: >100 krads(Si), Dose rate = 50 - 300 rads(Si)/s
- ELDRS: > 50 krads(Si), Dose rate = 0.01 rads(Si)/s
❑Thermal shutdown
❑Output voltage adjustable: 1.25V to 23V
❑Dropout voltage: 1.3V at 1.0Amps
❑3-Terminal
❑Output current: 1.0A (See Note 1, pg 2)
❑Voltage reference: 1.25V +2%, -3.2%
❑Load regulation: 0.3% 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
❑Aeroflex Plainview’s Radiation Hardness Assurance Plan is DLA Certified to MIL-PRF-38534, Appendix G.
DESCRIPTION
The Aeroflex Plainview VRG8662 consists of a Positive Adjustable (RH1086) LDO voltage regulator capable of
supplying 1.0Amps over the output voltage range as defined under recommended operating conditions. The VRG8662
offers excellent line and load regulation specifications and ripple rejection. Dropout (VIN - VOUT) decreases at lower
load currents.
The VRG8662 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 VRG8662 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 VRG8662 is ideal for demanding military and space applications.
Radiation Tolerant
FIGURE 1 – BLOCK DIAGRAM / SCHEMATIC
April 24, 2012
www.aeroflex.com/voltreg
Standard Products
FEATURES
VRG8662
Voltage Regulator, 1.0 Amp, Positive
Low Dropout (LDO), Adjustable
2
V
IN
ADJ
V
OUT
3
1
RH1086
Positive
Regulator
2
SCD8662 Rev G 4/24/12 Aeroflex Plainview
ABSOLUTE MAXIMUM RATINGS
PARAMETER RANGE UNITS
Input Voltage +25+VREF VDC
DC Output Current 1.5 A
Lead temperature (soldering 10 Sec) 300 °C
Input Output Differential 25 VDC
Output Voltage +25 VDC
ESD (MIL-STD-883, M3015, Class 3A) 4000 V
Operating Junction Temperature Range -55 to +150 °C
Storage Temperature Range -65 to +150 °C
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 1.275 to 23 VDC
Input Output Differential 1.5 to 25 VDC
Case Operating Temperature Range -55 to +125 °C
ELECTRICAL PERFORMANCE CHARACTERISTICS
Unless otherwise specified, -55°C < Tc < +125°C.
PARAMETER SYM CONDITIONS (P PMAX)M I N M A X U N I T S
Reference Voltage 2/ 3/VREF 10mA < IOUT < 1.0A, 1.5V < VIN - VOUT < 15V 1.210 1.275 V
Line Regulation 2/ 3/ILOAD = 10mA, Tj = +25°C,
1.5V < VIN - VOUT < 15V -0.25%
Load Regulation 2/ 3/10mA < IOUT < 1.0A, (VIN - VOUT) = 3V - 0.40 %
Dropout Voltage 2/ 4/VDROP DVREF = 1%, IOUT = 1.0A - 1.30 V
Adjust Pin Current 2/ - - - 120 µA
Adjust Pin Current Change 2/-10 mA < IOUT < 1A, 1.5V < VIN - VOUT < 15V - 5 µA
Current Limit 2/ 6/IMAX
VIN - VOUT = 5V 1.5 - A
VIN - VOUT > 25V 0.047 - A
Minimum Load Current 5/IMIN VIN - VOUT = 25V - 10 mA
Ripple Rejection 3/-
IOUT = 1.0A, (VIN - VOUT) = 3V, f = 120Hz,
CADJ = COUT = 25µF 60 - dB
Thermal Regulation - 30ms pulse, TC = +25°C - 0.04 %/W
VREF Long-Term Stability 5/ - Burn In: TC = +125°C @ 1000hrs min. Tested at +25°C only. - 0.30 %
Thermal Resistance
(Junction to Case) JC --3°C/W
Notes:
1/ For compliance with MIL-STD- 883 revision C current density specification, the RH1086MK is derated to 1 Amp but is capable of 1.5 Amps.
2/ Specification derated to reflect Total Dose exposure to 100 Krad (Si) @+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/ Dropout voltage is specified over the full output current range of the device.
5/ Not tested. Shall be guaranteed by design, characterization, or correlation to other tested parameters.
6/ Pulsed @ <10% duty cycle @+25°C for characterization only. (See note 1)
VOUT
VIN
VOUT
IOUT
3
SCD8662 Rev G 4/24/12 Aeroflex Plainview
The maximum Power dissipation is limited by the thermal shutdown function of the regulator chip in the VRG8662. The graph above
represents the achievable power before the chip shuts down. The line in the graph represents the maximum power dissipation of
the VRG8662 This graph is based on the maximum junction temperature of 150°C and a thermal resistance (JC) of 3°C/W.
60
50
40
30
20
10
0 20 40 60 80 100 120 140
Case Temperature (°C)
0
Maximum Power
Dissipation
(Watts)
FIGURE 2 – MAXIMUM POWER vs CASE TEMPERATURE
4
SCD8662 Rev G 4/24/12 Aeroflex Plainview
FIGURE 4 – RH1086 TYPICAL DROPOUT
FIGURE 3 – RH1086 SHORT CIRCUIT CURRENT
See Note 1, pg 2.
VOLTAGE CURVE
See Note 4, pg 2.
VRG8662
VIN Vout
ADJ
R1
R2
VREF
10µF
Tant.
IADJ = 50µAVREF = 1.25V,
+Reg = VOUT = VREF (1+R2/R1) + (IADJ x R2)
21
3
FIGURE 5 – BASIC RH1086 ADJUSTABLE REGULATOR APPLICATION
5
SCD8662 Rev G 4/24/12 Aeroflex Plainview
FIGURE 6 – PACKAGE OUTLINE — SURFACE MOUNT
NOTES:
4X R.020
.405
MAX
.301
MAX
.127
MAX
.015
3 Places
.286
.005
.030
MIN
R.025 MAX
6 Places
.095
.030 MIN
.005
.005
2 Places
.120
.225
.150
23
2 Places
1
1. Package & Lid are electrically isolated from signal pads
2. ESD symbol denotes Pin 1
6
SCD8662 Rev G 4/24/12
EXPORT CONTROL: EXPORT WARNING:
This product is controlled for export under the International Traffic in
Arms Regulations (ITAR). A license from the U.S. Department of
State is required prior to the export of this product from the United
States.
Aeroflex’s military and space products are controlled for export under
the International Traffic in Arms Regulations (ITAR) and may not be
sold or proposed or offered for sale to certain countries. (See ITAR
126.1 for complete information.)
For detailed performance characteristic curves, applications information and typical applications see the latest
datasheet for their RH1086, which is available on-line at www.linear.com.
Our passion for performance is defined by three
attributes represented by these three icons:
solution-minded, performance-driven and customer-focused
LT, LTC,
, Linear Technology and the Linear logo are registered trademarks and RH1086 is copyright Linear Technology Corporation.
PLAINVIEW, NEW YORK
Toll Free: 800-THE-1553
Fax: 516-694-6715
SE AND MID-ATLANTIC
Tel: 321-951-4164
Fax: 321-951-4254
INTERNATIONAL
Tel: 805-778-9229
Fax: 805-778-1980
WEST COAST
Tel: 949-362-2260
Fax: 949-362-2266
NORTHEAST
Tel: 603-888-3975
Fax: 603-888-4585
CENTRAL
Tel: 719-594-8017
Fax: 719-594-8468
www.aeroflex.com info-ams@aeroflex.com
Aeroflex Microelectronic Solutions reserves the right to
change at any time without notice the specifications, design,
function, or form of its products described herein. All
parameters must be validated for each customer's application
by engineering. No liability is assumed as a result of use of
this product. No patent licenses are implied.
ORDERING INFORMATION
MODEL DLA SMD # SCREENING PACKAGE
VRG8662-7 - Commercial Flow, +25°C testing only
SMD-0.5
Power Pkg
VRG8662-S -
Military Temperature, -55°C to +125°C
Screened in accordance with the individual Test Methods
of MIL-STD-883 for Space Applications
VRG8662-201-1S 5962-0920701KXC
In accordance with DLA SMD
VRG8662-201-2S 5962-0920701KXA
VRG8662-901-1S 5962R0920701KXC In accordance with DLA Certified RHA Program Plan to RHA
Level "R", 100krads(Si)
VRG8662-901-2S 5962R0920701KXA
