Specifications
Table Of Contents
- General Description
- Benefits
- More Information
- Overview
- Pad Connection Interface
- Recommended Host PCB Layout
- Module Connections
- Bluetooth Baseband Core
- Power Management Unit
- Integrated Radio Transceiver
- Microcontroller Unit
- Peripherals and Communication Interfaces
- Electrical Characteristics
- Chipset RF Specifications
- Timing and AC Characteristics
- Environmental Specifications
- Regulatory Information
- Packaging
- Ordering Information
- Acronyms
- Document Conventions
- Document History Page
- Sales, Solutions, and Legal Information
Document Number: 002-26540 Rev. ** Page 15 of 45
PRELIMINARY
CYBT-213043-02
Power Management Unit
Figure 9 shows the CYW20819 power management unit (PMU) block diagram. The CYW20819 includes an integrated buck regulator,
a bypass LDO, a capless LDO for digital circuits and a separate LDO for RF. The bypass LDO automatically takes over from the buck
once V
bat
supply falls below 2.1 V.
The voltage levels shown in this figure are the default settings; the firmware may change voltage levels based on operating conditions.
Figure 9. Default Usage Mode