Specifications

Document Number: 002-30672 Rev. ** Page 15 of 46
PRELIMINARY
CYBT-243068-02
CYBT-243069-02
Power Management Unit
Figure 9 shows the CYW20820 power management unit (PMU) block diagram. The CYW20820 includes an integrated buck regulator,
a digital LDO for the digital core, a PA LDO for internal PA, and an RF LDO for the Radio. The PMU also includes a brownout detector
which places the part in shutdown when input voltage is below a certain threshold.
Figure 9. Default Usage Mode