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.

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

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.