Models and WCCA Support
AEi Systems, Cobham (Aeroflex), and Linear Technology have teamed up to provide you with SPICE models and Worst Case Circuit Analysis Support for Aeroflex’s line of Rad-Hard Voltage Regulator products.
AEi Systems Model Listings
Shown below is a list of the Rad-Hard Cobham (Aeroflex) Voltage Regulator IC models that are now available for AEi Systems current WCCA and SPICE (engineering services) customers. The VRG Series is classified as Commerce 9A515.e Click the link for the model you would like to request or to obtain further information on ways to purchase the models.
- VRG8601/02 - RH117/RH137 – Pos./Neg. Adjustable Regulators
- VRG8660/VRG8607/08 - RH117 – Pos. Adjustable Regulators
- VRG8661/VRG8609/10 - RH137 – Neg. Adjustable Regulators
- VRG8684/VRG8687/VRG8688 - RH1084 - 5A Positive Adjustable LDO
- VRG8662/VRG8657/VRG8658 - RH1086 - 1.5A Positive Adjustable LDO
- VRG8663 - RH1185 - Neg. Adjustable LDO
- VRG8666/VRG8667/VRG8668 - RH3080 - Adjustable 0.9A LDO
Note: All models are accurate for 25°C and typical performance. Other part characteristics
modeled, or not modeled, are documented in the supplied model documentation.
Each model is distributed with the PSpice syntax model .LIB file, OrCAD .OLB symbol,
sample applications circuit, and correlation data showing the simulation-bench performance
comparison. Other models configurations are available for a small fee.
Please note: the Linear Technology LTxxxx models supplied with LTspice® software CANNOT be used for simulation of their Radiation-Hardened counterparts. For example, you cannot simulate an RH117 with an LT117. The actual parts are not identical, so many dynamic characteristics of the model (stability, step load, etc.) are not the same.
Model Support
AEi Systems is pleased to provide basic support for model usage for AEi Systems' current WCCA and SPICE customers. For questions relating to the OrCAD schematic tool or the PSpice simulator, please contact the provider of those tools, which is generally EMA-EDA or Cadence.
Support for Other Analog Simulation Syntaxes
AEi Systems can provide translations of the models for use with other simulators. Please contact us for pricing and options.
Do You Need Worst Case Analysis?
If you have a circuit using one or more of Linear Technology’s Rad-Hard devices
and need a WCCA or other SDRL (e.g., Stress & Derating, FMECA, radiation analysis)
, please contact AEi Systems for a quotation. There is no charge for initial consultations.
Please note that you cannot use LTspice models for worst case analyses. A valid worst
case analysis requires that you take into account various IC model characteristics
with end-of-life tolerances due to aging and radiation. LTspice models are encrypted,
as are the models available for download on this page. Therefore, they cannot be
toleranced. You can use the models on this page for nominal analyses. When you are
at the point that you need a worst case circuit analysis (WCCA), AEi Systems can
perform that analysis for you.
Sample WCCA Reports Available for Review
- 1.8V Output - VRG8662 - RH1086 Regulator WCCA
- 3.3V Output - VRG8684 - RH1084 Regulator WCCA
- 1.2V Output - VRG8666 - RH3080 Regulator WCCA
This WCCA is typical of the analyses required by most space programs and is TOR
compliant. These WCCA reports are covered under ITAR regulations (the models are not). A special license is required
for foreign distribution. There is a $500 charge for the license. There is no charge
if the recipient is a U.S. Citizen/Green Card holder and resides in the United States
or U.S. territories.
It includes the analyses for stability, step load, conducted susceptibility, shutdown
threshold, headroom, regulation, short circuit, over-current, and start-up.
Aeroflex - Linear Tech Voltage Regulator Series
SMD
Description
Aeroflex
Part Number
Element 1
Element 2
Package Picture
05219
Regulator, Linear, Dual
RH117
RH137
RH117
RH117
RH137
RH137
RH117
RH137
RH117
RH117
RH137
RH137
09206
Regulator, Linear, Single
RH117
N/A
RH137
N/A
09201
Regular, LDO, Dual
RH1086
RH1185
RH1086
RH1185
RH1086
RH1086
RH1086
RH1086
09207
Regulator, LDO, Single
RH1086
N/A
RH1086
N/A
RH1185
N/A
09245
Regulator, LDO, Single
RH1084
N/A
10213
Regulator, LDO, Dual
RH1084
RH1185
RH1084
RH1084
RH1084
RH1185
RH1084
RH1084
11205
Regulator, ULDO, Single
RH3080
N/A
13203
Regulator, ULDO, Dual
RH3080
RH3080
RH3080
RH3080
Note: Linear Technology, LT, LTC, LTspice and
are registered
trademarks of Linear Technology Corporation. Aeroflex and the Aeroflex logo are
the property of Aerfoflex, Inc. All other trademarks are the property of their respective
owners.