VRG8657

Voltage Regulator
VRG8657/58
Dual 1A LDO Adjustable Positive Voltage Regulators
Released Datasheet
Cobham.com/HiRel
March 24, 2016
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FEATURES
 Manufactured using
Space Qualified RH1086 die
 Radiation performance
 Packaging – Hermetic metal
- Total dose > 100 krad(Si)
- Thru-hole or Surface mount
 Two-Independent voltage regulators
- 6 Leads, .655"L x .415"W x .200"Ht
 Thermal shutdown
- Power package
 Output voltage adjustable: 1.25V to 23V
- Weight - 5 gm max
 Dropout voltage: 1.3V at 1.0Amp
 Designed for aerospace and high reliability space
 3-Terminal
applications
 Output current: 1.0Amp
 Voltage reference: 1.25V +2%, -3.2%
 Load regulation: 0.3% max
 Line regulation: 0.25% max
 Ripple rejection: >60dB
 Radiation Hardness Assurance Plan: DLA Certified to MIL-PRF-38534, Appendix G.
DESCRIPTION
The 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.
1
4
ADJ
2
ADJ
VOUT
VOUT
RH1086
Positive
Regulator
RH1086
Positive
Regulator
VIN
VIN
6
3
5
FIGURE 1 – BLOCK DIAGRAM / SCHEMATIC
SCD8657
Rev L
1
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ABSOLUTE MAXIMUM RATINGS
PARAMETER
RANGE
UNITS
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
Input Voltage
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
1.5 to 25
VDC
-55 to +125
°C
5
°C/W
Input Output Differential
3/
Case Operating Temperature Range
Thermal Resistance, Junction to case JC
ELECTRICAL PERFORMANCE CHARACTERISTICS
Unless otherwise specified, -55°C<TC<+125°C
PARAMETER
Reference Voltage 2/ 3/
SYM
VREF
CONDITIONS (P PMAX)
1.5V < VIN - VOUT < 15V, 10mA < IOUT < 1.0A
MIN
MAX
UNITS
1.210
1.275
V
Line Regulation 2/ 3/
VOUT ILOAD = 10mA, 1.5V < VIN - VOUT < 15V
VIN
-
0.25
%
Load Regulation 2/ 3/
VOUT 10mA < IOUT < 1.0A, VIN - VOUT = 3V
IOUT
-
0.3
%
Dropout Voltage 2/ 4/
VDROP
-
1.30
V
Adjust Pin Current 2/
-
-
120
µA
Adjust Pin Current Change
2/
-
-
5
µA
VREF = 1%, IOUT = 1.0A
10 mA < IOUT < 1A, 1.5V < VIN - VOUT < 15V
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
60
-
dB
Ripple Rejection 3/
-
IOUT = 1.0A, VIN - VOUT = 3V, f = 120Hz,
CADJ = COUT = 25µF
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).
SCD8657
Rev L 3/24/2016
2
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60
50
40
Maximum Power
Dissipation
(Watts)
30
Both Regulators
20
1 Regulator
10
0
0
20
40
60
80
100
120
140
Case Temperature (°C)
FIGURE 2 – MAXIMUM POWER vs CASE TEMPERATURE
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.
SCD8657
Rev L 3/24/2016
3
Cobham Semiconductor Solutions
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MINIMUM INPUT/OUTPUT DIFFERENTIAL (V)
See Note 1/, pg 2.
2
1
TJ = – 55°C
TJ = 25°C
TJ = 150°C
See
pg 2.
2.
See Note
Note 1/,
1, pg
0
1
0.5
OUTPUT CURRENT (A)
0
FIGURE 3 – RH1086 SHORT CIRCUIT CURRENT
FIGURE 4 – RH1086 DROPOUT VOLTAGE
TYPICAL CURVE
VRG8657/58
VIN
1.5
10µF
Tant.
Vout
VREF
R1
10µF
Tant.
ADJ
VREF = 1.25V, IADJ = 50µA
+Reg = VOUT = VREF (1+R2/R1) + (IADJ x R2)
R2
FIGURE 5 – BASIC RH1086 ADJUSTABLE REGULATOR APPLICATION
SCD8657
Rev L 3/24/2016
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Cobham Semiconductor Solutions
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TABLE I – PIN NUMBERS vs FUNCTION
PIN
FUNCTION
1
POS_ADJ_1
2
POS_VOUT_1
3
POS_VIN_1
4
POS_ADJ_2
5
POS_VIN_2
6
POS_VOUT_2
.200
.100
.108
.123
ø .010
CBA
ø.145 THRU
2x .028
MAX.
M
.150 REF.
6
5
2° MAX.
4
.720 ±.020
MEASURED
LEAD TIP
.415
.2075
–C–
1
2
ESD/PIN 1
IDENT
3
.230 MIN
.415 SQ
R.065 TYP.
4 PLCS
.655
–B–
.122
±.003
ø .010
BCA
.220 MAX.
±.005
–A–
.040
.030 DIA.
±.002
Notes:
1. Dimension Tolerance: ±.005 inches
2. Package contains BeO substrate
3. Case electrically isolated
ø .010
M
CBA
FIGURE 6 – PACKAGE OUTLINE — THRU-HOLE POWER PACKAGE
SCD8657
Rev L 3/24/2016
5
Cobham Semiconductor Solutions
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TABLE II – PIN NUMBERS vs FUNCTION
PIN
FUNCTION
1
POS_ADJ_1
2
POS_VOUT_1
3
POS_VIN_1
4
POS_ADJ_2
5
POS_VIN_2
6
POS_VOUT_2
.200
.100
.108
.123
ø .010
.150 REF.
CBA
ø.145 THRU
2x .028
MAX.
M
6
5
.060
4
.415
.886 ±.020
.2075
–C–
1
2
3
ESD/PIN 1
IDENT
.415 SQ
R.065 TYP.
4 PLCS
.655
–B–
.122
±.003
ø .010
BCA
.220 MAX.
±.005
–A–
.020
.040
.030 DIA.
±.002
ø .010
M
CBA
Notes:
1. Dimension Tolerance: ±.005 inches
2. Package contains BeO substrate
3. Case electrically isolated
FIGURE 7 – PACKAGE OUTLINE — SURFACE MOUNT POWER PACKAGE
SCD8657
Rev L 3/24/2016
6
Cobham Semiconductor Solutions
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ORDERING INFORMATION
MODEL
DLA SMD #
SCREENING
PACKAGE
VRG8657 - 7
-
Commercial Flow, +25°C testing only
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
VRG8657- 201-2S
5962-0920102KXA
VRG8657- 901-1S
5962R0920102KXC
VRG8657- 901-2S
5962R0920102KXA
In accordance with DLA Certified RHA Program Plan to RHA
Level "R", 100 krad(Si)
VRG8658 - 7
-
Commercial Flow, +25°C testing only
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
VRG8658- 201-2S
5962-0920102KYA
VRG8658- 901-1S
5962R0920102KYC
VRG8658- 901-2S
5962R0920102KYA
SCD8657
Rev L 3/24/2016
In accordance with DLA SMD
In accordance with DLA SMD
6 Lead
Thru-Hole
Power Pkg
6 Lead
Surface Mount
Power Pkg
In accordance with DLA Certified RHA Program Plan to RHA
Level "R", 100 krad(Si)
7
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REVISION HISTORY
Date
Revision
03/24/2016
L
SCD8657
Rev L 3/24/2016
Change Description
Import into Cobham format
8
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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 RH1086, which is available on-line at www.linear.com.
LT, LTC, Linear Technology and the Linear logo are registered trademarks and RH1086 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
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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
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SCD8657
Rev L 3/24/2016
9
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