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RT9991 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT9991 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 14 page  RT9991 1 DS9991-01 April 2011 www.richtek.com Ordering Information Note : 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. Pin Configurations (TOP VIEW) VQFN-32L 5x5 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 70 μA when operating in standby mode. The RT9991 is available in a VQFN-32L 5x5 package. 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 Open-Drain Reset Output RoHS Compliant and Halogen Free Applications 1.8/2.5 inch Solid-State Drives Portable Devices USB-Based Hand-Held Products Marking Information GND LX3 LX3 LX3 LX2 VIN2 GND GND VIN3 VIN3 GND VIN1 EN3 GND FB3 LX1 33 GND 24 23 22 21 1 2 3 4 10 11 12 13 31 30 29 28 20 19 5 6 9 32 14 27 18 7 15 26 16 25 17 8 RT9991 GQV YMDNN RT9991GQV : Product Number YMDNN : Date Code RT9991 Package Type QV : VQFN-32L 5x5 (V-Type) Lead Plating System G : Green (Halogen Free and Pb Free) |
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