Part Number: RT8207
Function: DDRII/DDRIII Memory Power Supply Controller / PWM Controller
Package: WQFN-20L type
Manufacturer: Richtek Technology
Pinouts:
Description:
The RT8207 provides a complete power supply for both DDRII/DDRIII memory systems. It integrates a synchronous PWM buck controller with a 3A sink/source tracking linear regulator and a buffered low noise reference. The PWM controller provides the high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high-voltage batteries to generate low voltage chipset RAM supplies in notebook computers. The constant-on-time PWM control scheme handles wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency.
Application circuit :
PWM Controller Features:
1. Resistor Programmable Current Limit by Low-Side RDS(ON) Sense
2. Quick Load-Step Response within 100ns
3. 1% VOUT Accuracy Over Line and Load
4. Fixed 1.8V (DDRII), 1.5V (DDRIII) or Adjustable 0.75V to 3.3V Output Range
5. Battery Input Range 2.5V to 26V
6. Resistor Programmable Frequency
7. Over/Under Voltage Protection
8. 4 Steps Current Limit During Soft-Start
9. Drives Large Synchronous-Rectifier FETs
10. Power-Good Indicator
Official Homepage: https://www.richtek.com/Products/
RT8207 Datasheet PDF Download
Other data sheets are available within the file: RT-8207