RT9471DGQW

The RT9471DGQW is a highly integrated single-cell Li-ion/Li-polymer battery charger IC from Richtek. It supports USB PD 3.0 and QC 3.0/2.0 fast charging protocols, making it ideal for portable devices.
Key features:
- Wide input voltage range (3.9V–14V)
- Programmable charging current (up to 3A)
- Supports I²C interface for flexible configuration
- Integrated power MOSFETs for compact designs
- Thermal regulation & multiple protections (OVP, OCP, OTP)
Applications include smartphones, tablets, and power banks. Its small WDFN-10L package (3x3mm) suits space-constrained designs.
For detailed specs, refer to Richtek’s datasheet.

Equivalent products to the RT9471DGQW (battery charger IC) include:
- BQ25601D (TI)
- MAX77757 (Maxim Integrated)
- LTC4162 (Analog Devices)
- ISL9237 (Renesas)
These alternatives offer similar features like switching charger functionality, I²C control, and multi-cell support. Always verify compatibility with your specific design requirements.

The RT9471DGQW is a 20-pin (WDFN-20L 3x3) battery charger IC with the following key functions:
- Input Power Path Management (supports USB PD, QC, and adaptive input current).
- Charging Control (up to 3A, with CC/CV regulation).
- Integrated MOSFETs (synchronous buck converter).
- Protections (OVP, OCP, thermal shutdown).
- I²C Interface for configuration/monitoring.
Pins include:
- VIN, BAT, SYS (power terminals).
- I²C (SCL/SDA) for communication.
- STAT, PG (status indicators).
- TS (temperature sensing).
Compact and efficient for portable devices.