SCD8657 Rev K
❑Manufactured using Space Qualified RH1086 die
❑Radiation performance
- Total dose > 100 krad (Si)
❑Two-Independent voltage regulators
❑Thermal shutdown
❑Output voltage adjustable: 1.25V to 23V
❑Dropout voltage: 1.3V at 1.0Amp
❑3-Terminal
❑Output current: 1.0Amp
❑Voltage reference: 1.25V +2%, -3.2%
❑Load regulation: 0.3% max
❑Line regulation: 0.25% max
❑Ripple rejection: >60dB
❑Packaging – Hermetic metal
- Thru-hole or Surface mount
- 6 Leads, .655"L x .415"W x .200"Ht
- Power package
- Weight - 5 gm max
❑Designed for aerospace and high reliability space
applications
DESCRIPTION
The Aeroflex Plainview VRG8657/8658 consists of two Positive Adjustable (RH1086) LDO voltage regulators each
capable of supplying 1.0Amps over the output voltage range as defined under recommended operating conditions. The
VRG8657/8658 offers excellent line and load regulation specifications and ripple rejection. There is full electrical
isolation between the regulators and each regulator to the package.
The VRG8657/8658 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 VRG8657/8658 has been specifically designed to meet exposure to radiation environments. The VRG8657 is
configured for a Thru-Hole 6 lead metal power package and the VRG8658 is configured for a Surface Mount 6 lead
metal power package. It is guaranteed operational from -55°C to +125°C. Available screened to MIL-STD-883, the
VRG8657/8658 is ideal for demanding military and space applications.
Dropout (VIN - VOUT) decreases at lower load currents for both regulators.
Radiation Tolerant
FIGURE 1 – BLOCK DIAGRAM / SCHEMATIC
May 15, 2012
www.aeroflex.com/voltreg
Standard Products
FEATURES
VRG8657/VRG8658
Dual Voltage Regulator, 1.0 Amp, Positive
5
V
IN
ADJ
V
OUT
4
3
V
IN
ADJ
V
OUT
1
2 6
RH1086
Positive
Regulator
RH1086
Positive
Regulator
Low Dropout (LDO), Adjustable
❑Aeroflex Plainview’s Radiation Hardness Assurance Plan is DLA Certified to MIL-PRF-38534, Appendix G.
2
SCD8657 Rev K 5/15/12 Aeroflex Plainview
ABSOLUTE MAXIMUM RATINGS
PARAMETER RANGE UNITS
Input Voltage 25+VREF VDC
Lead temperature (soldering 10 Sec) 300 °C
Input Output Differential 25 VDC
Output Voltage +25 VDC
DC Output Current 1.5 A
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 Maximums Rating" 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 3/1.5 to 25 VDC
Case Operating Temperature Range -55 to +125 °C
Thermal Resistance, Junction to case JC 5°C/W
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 1.5V < VIN - VOUT < 15V, 10mA < IOUT < 1.0A 1.210 1.275 V
Line Regulation 2/ 3/ILOAD = 10mA, 1.5V < VIN - VOUT < 15V - 0.25 %
Load Regulation 2/ 3/10mA < IOUT < 1.0A, VIN - VOUT = 3V - 0.3 %
Dropout Voltage 2/ 4/VDROP VREF = 1%, IOUT = 1.0A -1.30V
Adjust Pin Current 2/--120µA
Adjust Pin Current Change
2/-10 mA < IOUT < 1A, 1.5V < VIN - VOUT < 15V - 5 µA
Current Limit 2/ 6/IMAX VIN - VOUT = 5V
VIN - VOUT < 25V
1.5
0.047
-
-
A
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 minimum, tested @
25°C -0.3%
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.
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 (See Note 1).
VOUT
VIN
VOUT
IOUT
3
SCD8657 Rev K 5/15/12 Aeroflex Plainview
The maximum Power dissipation is limited by the thermal shutdown function of each regulator chip in the
VG8657/8658. The graph above represents the achievable power before the chip shuts down. The first line in the
graph represents the maximum power dissipation of the VG8657/8658 with one regulator on (the other off) and the
other line represents both regulators on dissipating equal power. If both regulators are on and one regulator is
dissipating more power that the other, the maximum power dissipation of the VG8657/8658 will fall between the two
lines. This graph is based on the maximum junction temperature of 150°C and a thermal resistance (JC) of 5°C/W.
60
50
40
30
20
10
0 20 40 60 80 100 120 140
Case Temperature (°C)
1 Regulator
0
Both Regulators
Maximum Power
Dissipation
(Watts)
FIGURE 2 – MAXIMUM POWER vs CASE TEMPERATURE
4
SCD8657 Rev K 5/15/12 Aeroflex Plainview
FIGURE 4 – RH1086 DROPOUT VOLTAGE
FIGURE 3 – RH1086 SHORT CIRCUIT CURRENT
See Note 1, pg 2.
See Note 1/, pg 2.
OUTPUT CURRENT (A)
0
0
MINIMUM INPUT/OUTPUT DIFFERENTIAL (V)
1
2
0.5 11.5
T
J
= –55°C
T
J
= 25°C
T
J
= 150°C
See Note 1/, pg 2.
TYPICAL CURVE
VRG8657/58
VIN Vout
ADJ
R1
R2
VREF
10µF
Tant.
IADJ = 50µAVREF = 1.25V,
+Reg = VOUT = VREF (1+R2/R1) + (IADJ x R2)
FIGURE 5 – BASIC RH1086 ADJUSTABLE REGULATOR APPLICATION
10µF
Tant.
5
SCD8657 Rev K 5/15/12 Aeroflex Plainview
FIGURE 6 – PACKAGE OUTLINE — THRU-HOLE POWER PACKAGE
.108
.200
.100
.123
ø.145 THRU
.415
.2075
R.065 TYP.
4 PLCS .655
.415 SQ
±.003
.220 MAX.
±.005
.040
±.002
.030 DIA.
.150 REF. 2° MAX.
±.020
.720
MEASURED
LEAD TIP
IDENT
ESD/PIN 1
–B–
–A–
–C–
ø.010 B C A
M
ø.010 C B A
3
456
21
2x .028
M
ø.010 C B A
.230 MIN
Notes:
1. Dimension Tolerance: ±.005 inches
2. Package contains BeO substrate
3. Case electrically isolated
.122
MAX.
TABLE I – PIN NUMBERS vs FUNCTION
PIN FUNCTION
1 POS_ADJ_1
2POS_VOUT_1
3 POS_VIN_1
4 POS_ADJ_2
5 POS_VIN_2
6POS_VOUT_2
6
SCD8657 Rev K 5/15/12 Aeroflex Plainview
FIGURE 7 – PACKAGE OUTLINE — SURFACE MOUNT POWER PACKAGE
.108
.200
.100
.123
ø.145 THRU
.415
.2075
R.065 TYP.
4 PLCS .655
.415 SQ
±.003
.220 MAX.
±.005
.040 ±.002
.030 DIA.
.122
.150 REF.
±.020.886
IDENT
ESD/PIN 1
–B–
–A–
–C–
ø.010 B C A
M
ø.010 C B A
Notes:
1. Dimension Tolerance: ±.005 inches
2. Package contains BeO substrate
3
456
21
TABLE II – PIN NUMBERS vs FUNCTION
PIN FUNCTION
1 POS_ADJ_1
2POS_VOUT_1
3 POS_VIN_1
4 POS_ADJ_2
5 POS_VIN_2
6POS_VOUT_2
2x .028
M
ø.010 C B A
.020
.060
3. Case electrically isolated
MAX.
7
PLAINVIEW, NEW YORK
Toll Free: 800-THE-1553
Fax: 516-694-6715
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Tel: 321-951-4164
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CENTRAL
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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.
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.)
SCD8657 Rev K 5/15/12
LT, LTC,
, Linear Technology and the Linear logo are registered trademarks and RH1086 is copyright Linear Technology Corporation.
Our passion for performance is defined by three
attributes represented by these three icons:
solution-minded, performance-driven and customer-focused
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.
ORDERING INFORMATION
MODEL DLA SMD # SCREENING PACKAGE
VRG8657-7 - Commercial Flow, +25°C testing only
6 Lead
Thru-Hole
Power Pkg
VRG8657-S -
Military Temperature, -55°C to +125°C
Screened in accordance with the individual Test Methods
of MIL-STD-883 for Space Applications
VRG8657-201-1S 5962-0920102KXC
In accordance with DLA SMD
VRG8657-201-2S 5962-0920102KXA
VRG8657-901-1S 5962R0920102KXC In accordance with DLA Certified RHA Program Plan to RHA
Level "R", 100krads(Si)
VRG8657-901-2S 5962R0920102KXA
VRG8658-7 - Commercial Flow, +25°C testing only
6 Lead
Surface Mount
Power Pkg
VRG8658-S -
Military Temperature, -55°C to +125°C
Screened in accordance with the individual Test Methods
of MIL-STD-883 for Space Applications
VRG8658-201-1S 5962-0920102KYC
In accordance with DLA SMD
VRG8658-201-2S 5962-0920102KYA
VRG8658-901-1S 5962R0920102KYC In accordance with DLA Certified RHA Program Plan to RHA
Level "R", 100krads(Si)
VRG8658-901-2S 5962R0920102KYA
