loading
About Richtek | Contact Us |

The RTQ5152 is an integrated power management IC (PMIC) solution for gen1 DDR5 MRDIMM applications. This device provides four single Buck voltage regulators (SWA, SWB, SWC, and SWD) and 3 LDOs (VLDO_1.0V, VLDO_1.8V, and VBIAS). Among the four voltage regulators, the SWA and SWB can operate in either single-phase mode or dual-phase mode. Moreover, the RTQ5152 supports a selectable interface (I2C or I3C Basic) to fit various application environments. A complete protection mechanism is also embedded for safe power distribution and the corresponding fault events can be recorded by the registers as well as CAMP and GSI_n open-drain indicators. The RTQ5152 is available in a VQFN-35L 5x5 (FC) package. The recommended junction temperature range is from -40°C to 125°C.

Applications

  • Typical Gen1 DDR5 MRDIMM
Key Spec.
RTQ5152
Status Active
Vin (min) (V) 4.25
Vin (max) (V) 15
Number of Channels 6
Number of Buck Converters 4
Number of Boost Converters 0
Number of Negative Outputs 0
Number of LED Drivers 0
Number of LDO Regulators 2
Application Industrial
Features Adjustable Current Limit;Adjustable Frequency;Adjustable Soft-Start;Built-in Bootstrap Switch;COT Control;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Fast Transient Response;I2C;Industrial;Internal Compensation;OCP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP
Package Type VQFN5x5-35(FC)
Outline Dimension, Footprint, Drawing Download
Features
  • Meet JEDEC DDR5 PMIC5020 Specification
  • Wide Input Supply Range: 4.25V to 15V
  • VIN_MGMT Input Supply Range: 3V to 3.6V
  • High Integration:
    - Four High-Efficiency Buck Converters:
         - SWA: ITDC = 8.5A, IMAX = 10A
         - SWB: ITDC = 8.5A, IMAX = 10A
         - SWC: ITDC = 10A, IMAX = 11.5A
         - SWD: ITDC = 3A, IMAX = 3.5A
    - Three LDOs
         - VLDO_1.8V: IMAX = 25mA
         - VLDO_1.0V: IMAX = 20mA
         - VBIAS for internal use only
  • Programmable Dual-phase and Single-phase Regulator for SWA and SWB
  • Efficiency Up to 92% for Each Buck Converter
  • Fast Transient Response with A2RCOT®
  • Dual-phase DEM Operation Ensures Good Light Load Efficiency and Good Transient Response
  • 0.75% Converter Output Accuracy
  • Automatic Input Supply Switchover for LDOs
  • Telemetry for Output Current, Voltage, and Power
  • Persistent Error Log Registers with Non-Volatile Memory.
  • Programmable and DIMM Specific Registers for Customization
  • Write Protect Mode and Programmable of Operation
  • Flexible Open Drain IO (I2C) and Push-Pull (I3C Basic) IO Support
  • Smart Protection Unit Provides Best Protection Shutdown Sequence Control
  • Complete Protection Mechanisms
    - VIN_Bulk Input Supply OVP
    - OVP, UVP, OCP, HCW for Each Rail
    - High Temp Warning and OTP
Technical Documents
TitleItem TypeLast UpdateDownload
Richtek Product Selection Guide [Jan., 2026] Selection Guide2026/01/12
Please confirm with our distributor or sales representative for actual stock status.
TOP