Description
® RT8231A/B Complete DDR Memory Power Supply Controller General .
The RT8231A/B provides a complete power supply for DDR2/DDR3/DDR3L/LPDDR3/DDR4/LPDDR4 memory systems.
Features
* PWM Controller Adjustable Current Limit with Low-Side RDS(ON) Sensing Low Quiescent Supply Current Quick Load-Step Response within 100ns 1% VVDDQ Accuracy Over Line and Load Adjustable 0.675V to 3.3V Output Range for 1.8V (DDR2), 1.5V (DDR3), 1.35V (DDR3L), 1.2V (LPDDR3), 1.2V (DDR4)
Applications
* DDR2/DDR3/DDR3L/LPDDR3/DDR4/LPDDR4 Memory Power Supplies
* Notebook computers
* SSTL18, SSTL15 and HSTL bus termination
Pin Configuration
(TOP VIEW)
VTT VLDOIN BOOT UGATE PHASE
VTTGND VTTSNS
GND VTTREF
VDDQ
20 19 18 17 16
1
15 LGATE
2
14 PGND
3
GND
13 CS
4
21 12 VDD
5
11