Maybe my ADP2120 have broken....
If the ADP2120 is not synchronizing maybe your clock source is not compliant with the specs.
100ns min pulse and VH=1.3V, VL=0.4V
Is the exposed pad of ADP2120 internally connected to GND pin? Or floating ?
load transient depends on the ammount of capacitance added to the output.
You may want to consider using the ADP2120 design tool to identify how much capacitance you will need for a specific transient requirement.
ADP21xx Buck Regulator Design…
What is the max recommended output capacitance allowed on the ADP2120? The datasheet specifies a min of 22uF, but can another 100uF or 200uF cap be added to this Cout distributed elsewhere on a board? At what output capacitance woudld the device…
as you mentioned since the ADP2138 does not have a Pgood signal the only way to now if you have reached a current limit condition is to monitor the output voltage externally. But even in that condition the output could be only slightly out of…
the min inductor value for the ADP2118 is around 1.5uH. It is not described in the datasheet because different inductors (even if specified at 1.5uH) may have lower inductance at full load.
The best way to determin the min inductance for the…
I use a 2.2mm center hole. This is sufficient for hand soldering. A 5mm hole is much too big.
On the 100 pin 21489, I used 24 sounding vias with 0.2mm holes
For hand soldering, we start with a small heater, Hakko FR-830. This preheats the board for…