VRG8661 (3/16)

Voltage Regulator
VRG8661
Adjustable Negative Voltage Regulator
Released Datasheet
Cobham.com/HiRel
March 24, 2016
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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
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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
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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
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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
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.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
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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)
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REVISION HISTORY
Date
Revision
03/24/2016
G
SCD8661
Rev G 3/24/2016
Change Description
Import into Cobham format
7
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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 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
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www.cobham.com/HiRel