®
RT9991
Power Management IC for SSD
General Description
The RT9991 is a 3-CH PMIC for SSD (Solid-State Drive). It int...
®
RT9991
Power Management IC for SSD
General Description
The RT9991 is a 3-CH PMIC for SSD (Solid-State Drive). It integrates 3 synchronous buck converters and one
voltage detector.
The RT9991 provides 3 independent enable pins for sequence control and auto discharge when powered off on the power line of a NAND Flash.
The frequency can be up to 1.5MHz for Buck 1and Buck 2, and up to 2MHz for Buck 3, hence allowing the use of smaller sized inductors to meet the space and height limit in handheld applications.
To maximize power utilization, the RT9991 is designed with extremely low quiescent current. The buck converter can consume down to 70μA when operating in standby mode.
The RT9991 is available in a VQFN-32L 5x5 package.
Ordering Information
RT9991
Package Type QV : VQFN-32L 5x5 (V-Type)
Note :
Lead Plating System G : Green (Halogen Free and Pb Free)
Richtek products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
RT9991 GQV YMDNN
RT9991GQV : Product Number YMDNN : Date Code
Features
Supply Input
Voltage Range : 2.8V to 5.5V Buck 1 / Buck 2
Adjustable Output
Voltage for VCORE or DRAM Cache Output Current up to 1A Switching Frequency : 1.5MHz Buck 3 Adjustable Output Version for NAND Flash Output Current up to 3A Switching Frequency : 2MHz Auto Discharge Function
Voltage Detector Programmable Threshold
Voltage Ope...