ADL5802 overheating

Your schematic looks OK. Although you did not show DC-blocking caps at ADL5802's LO pins, I do see 2 series caps on your board. Please make sure LO pins are ac-coupled.

You can start troubleshooting by measuring DC voltages at the IC pins:

1,2,5,8,11,14,17,18,21: GND

3,4,15,16: Output pins = VPOS = 5V

6,13,14: VPOS = 5V

7: ENBL = GND (active low)

9,10: LO input pins = some internal bias voltage between 0V and VPOS

12: VSET = 3.3V according to your schematic

19,20,22,23: Input pins = some internal bias voltage between 0V and VPOS

Your schematic looks OK. Although you did not show DC-blocking caps at ADL5802's LO pins, I do see 2 series caps on your board. Please make sure LO pins are ac-coupled.

You can start troubleshooting by measuring DC voltages at the IC pins:

1,2,5,8,11,14,17,18,21: GND

3,4,15,16: Output pins = VPOS = 5V

6,13,14: VPOS = 5V

7: ENBL = GND (active low)

9,10: LO input pins = some internal bias voltage between 0V and VPOS

12: VSET = 3.3V according to your schematic

19,20,22,23: Input pins = some internal bias voltage between 0V and VPOS

Thank you for your answer, I will check all again. I was wondering what would be a regular temperature while operating do you have any idea about that?

From ADL5802's thermal parameters shown in the datasheet:

Theta JA = (Tj - TA) / Pd

Tj = (Theta JA) * Pd + TA

Assuming ambient temp (TA) is 20degC, and power dissipation of 1.1W (5V * 220mA):

Tj = 26.5 * 1.1 + 20 = 49.2degC

Theta JC = (Tj - TC) / Pd

TC= Tj - (Theta JC) * Pd

TC = 49.2 - (8.7 * 1.1) = 39.6degC

Note that this calculation assumes using ADI evaluation board. TC is at the IC's exposed paddle. Case top will be a little bit hotter.