The RT8223N is a dual step-down, switch-mode power supply controller generating logic-supply voltages in battery-powered systems. It includes two Pulse Width Modulation (PWM) controllers adjustable from 2V to 5.5V, and also features fixed 5V/3.3V linear regulators. Each linear regulator provides up to 100mA output current with automatic linear regulator boot.
fixed 5V/3.3V linear regulators. Each linear regulator provides up to 100mA output current with automatic linear regulator bootstrapping to the PWM outputs. The RT8223N includes on-board power up sequencing, a power good output, internal soft-start, and soft-discharge output that prevents negative voltage during shutdown. The constant on-time PWM scheme can operate without sense resistors and provide 100ns load transient response while maintaining nearly constant switching frequency. To eliminate noise in audio applications, an ultrasonic mode is included, which maintains the switching frequen.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | RT8223A |
Richtek |
Main Power Supply Controller | |
2 | RT8223B |
Richtek |
Main Power Supply Controller | |
3 | RT8223L |
Richtek |
Main Power Supply Controller | |
4 | RT8223M |
Richtek |
Main Power Supply Controller | |
5 | RT8223P |
Richtek |
Main Power Supply Controller | |
6 | RT8228A |
Richtek |
Single Synchronous Buck PWM Controller | |
7 | RT8228B |
Richtek |
Single Synchronous Buck PWM Controller | |
8 | RT82 |
LRC |
AUTOMOTIVE BRIDGE RECTIFIERS | |
9 | RT8202 |
Richtek |
Single Synchronous Buck Controller | |
10 | RT8202A |
Richtek |
Single Synchronous Buck Controller | |
11 | RT8202B |
Richtek |
Single Synchronous Buck Controller | |
12 | RT8202L |
Richtek |
(RT8202L/M) Single Synchronous Buck Controller |