The RT6576A/B is a dual-channel step-down controller generating supply voltages for battery-powered systems. It includes two Pulse-Width Modulation (PWM) controllers adjustable from 2V to 5.5V, and two fixed 5V/3.3V linear regulators. Each linear regulator provides up to 100mA output current and 3.3V linear regulator provides 1% accuracy under 35mA. The RT65.
include on-board power-up sequencing, a powergood output, internal soft-start, and soft-discharge output that prevents negative voltage during shutdown.
A constant current ripple PWM control scheme operates without sense resistors and provides 100ns response to load transient. For maximizing power efficiency, the RT6576A/B automatically switches to the diode-emulation mode in light load applications. The RT6576A/B is available in the WQFN-20L 3x3 package.
Features
Support Connected Standby Mode for Ultrabook
CCRCOT Control with 100ns Load Step Response
PWM Maximum Duty Ratio > 98%
5V .
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | RT6576B |
Richtek |
Dual-Channel Synchronous DC/DC Step-Down Controller | |
2 | RT6576C |
Richtek |
Dual-Channel Synchronous DC/DC Step-Down Controller | |
3 | RT6576D |
Richtek |
Dual-Channel Synchronous DC/DC Step-Down Controller | |
4 | RT6576E |
Richtek |
Dual-Channel Synchronous DC/DC Step-Down Controller | |
5 | RT6575A |
Richtek |
Dual-Channel Synchronous DC/DC Step-Down Controller | |
6 | RT6575B |
Richtek |
Dual-Channel Synchronous DC/DC Step-Down Controller | |
7 | RT6575C |
Richtek |
Dual-Channel Synchronous DC/DC Step-Down Controller | |
8 | RT6575D |
Richtek |
Dual-Channel Synchronous DC/DC Step-Down Controller | |
9 | RT6575K |
Richtek |
High Efficiency Single Synchronous DC-DC Step-Down Controller | |
10 | RT6515 |
Richtek |
10-Bit Programmable Gamma Reference | |
11 | RT6541A |
Richtek |
High Efficiency Single Synchronous Buck PWM Controller | |
12 | RT6541D |
Richtek |
High Efficiency Single Synchronous Buck PWM Controller |