The RT8243A/B/C is a dual step down, Switch Mode Power Supply (SMPS) controller which generates logic supply voltages for battery powered systems. It includes two Pulse Width Modulation (PWM) controllers adjustable from 2V to 5.5V and also two fixed 5V/3.3V linear regulators. One of the controllers (LDO5) provides automatic switch over to the BYP1 input conn.
include on board power up sequencing, a power good output, internal softstart, and a soft discharge output that prevents negative voltage during shutdown. A constant on-time PWM control scheme operates without sense resistors and assures fast load transient response while maintaining nearly constant switching frequency. To eliminate noise in audio applications, an ultrasonic mode is.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | RT8243A |
Richtek |
Main Power Supply Controller | |
2 | RT8243C |
Richtek |
Main Power Supply Controller | |
3 | RT8240A |
Richtek |
High Efficiency Single Synchronous Buck PWM Controller | |
4 | RT8240B |
Richtek |
High Efficiency Single Synchronous Buck PWM Controller | |
5 | RT8240C |
Richtek |
High Efficiency Single Synchronous Buck PWM Controller | |
6 | RT8241 |
Richtek |
High Efficiency Single Synchronous Buck PWM Controller | |
7 | RT8241E |
Richtek |
High Efficiency Single Synchronous Buck PWM Controller | |
8 | RT8248A |
Richtek |
Complete DDR Memory Power Supply Controller | |
9 | RT8249A |
Richtek |
Dual-Channel Synchronous DC/DC Step-Down Controller | |
10 | RT8249B |
Richtek |
Dual-Channel Synchronous DC/DC Step-Down Controller | |
11 | RT8249C |
Richtek |
Dual-Channel Synchronous DC/DC Step-Down Controller | |
12 | RT8249D |
Richtek |
Dual-Channel Synchronous DC/DC Step-Down Controller |