Colleagues,
what is the main improvement of the TPS40057 over TPS40053?
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Dmitry Vasilenko,
The main improvements of the TPS40057 over the TPS40053 are improved accuracy of the reference voltage and current limit:
1) The error amplifier reference (Vfb) has been tightened to allow more accurate output voltages. Including meeting a 1% tolerance at 0 - 85C
2) Tighten current limit accuracy, especially the sense offset, which was improved from a 95mV range to a 40mV range.