Some more useful info for PocketQube builders relating to the ST SPV1040 IC. Turn out that it is being used in the US AMSAT Fox-1 Cubesat, CUBESTAR cubesat, NTNU Test Satellite ( NUTS), ESTCube-1 , and probably several others. If you read all the papers and articles about these, you should get a good idea about system designs.
This means the list of useful candidates is:
Linear Technology LTC3105
ST Microelectronics SPV1040
Spansion MB39C831QN
Texas Instruments BQ25504
They all have different features and limitations, so you'll need to look at the datasheets to make sure it's right for your project.
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