Application Note
R16AN0013EU0100 Rev.1.0 Page 1
Jun 18, 2021 © 2021 Renesas Electronics
This document discusses the SPICE model for the RAA214020 LDO including the features supported and not
supported by the model. To download the model, see the RAA214020 product page.
Contents
1. Model Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Device Performance Features Supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Device Performance Features NOT Supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2. Downloading and Running the Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3. License Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1. Model Features
This Pspice Macromodel is intended to give typical DC and AC performance characteristics under a wide range of
external circuit configurations using compatible simulation platforms such as iSim PE.
1.1 Device Performance Features Supported
The following are the device performance features that are supported by this model:
â–ª Device parameters are set to typical room temperature values
â–ª Gain and phase
â–ª Input noise terms including 1/f effects
â–ª PSRR
â–ª Transient V
IN
, V
OUT
, and Load. Reference the Excel spreadsheet that is included with the SPICE software
(Figure 1) for test results (RAA214020 SPICE Model Validation.xlsx).
â–ª Output current limit
â–ª Enable and Disable function using the Enable pin
â–ª Power-good using the PG pin
▪ UVLO <1V and 300Ω output impedance
▪ 300Ω output pull-down when part is disabled and V
IN
> 1V
▪ 300Ω output pull-down when part is enabled and 1V < V
IN
> 2.5V
1.2 Device Performance Features NOT Supported
The following are the device performance features that are NOT supported by this model:
â–ª Harmonic distortion effects
â–ª Thermal effects and/or over-temperature
â–ª Parameter variation
â–ª Part-to-part performance variation because of normal process parameter spread
â–ª Any performance difference arising from different packaging
RAA214020 SPICE Model
R16AN0013EU0100 Rev.1.0 Page 2
Jun 18, 2021
RAA214020 SPICE Model Application Note
2. Downloading and Running the Software
The RAA214020 SPICE model software can be down loaded from the RAA214020 product page.
Save the file to a common directory for your SPICE simulations. This application note assumes you have a basic
knowledge of running SPICE simulations. To open the software, click on the file titled
RAA214020SPICEMODELrev03.opj (highlighted in Figure 1). An Excel spreadsheet is also provided
documenting the validation of the model..
The screen shown in Figure 2 appears. The test circuits for Noise, Gain Phase, PSRR, TransLoad, TransVIN, and
TransVout are all setup. To run the different tests, click the down arrow and select the test you want to run (red
arrow). You might need to right click on the specific test and Make Root to get it to run. To see the test setup,
double click on PAGE 1 and the schematic with the RAA214020 SubCKT appears. Figure 3 shows the Noise test
circuit.
Figure 1. RAA214020 SPICE Model Software