The RTQ5136 is an integrated power management IC suitable for general and overclocking DDR5 SODIMM and UDIMM applications. This device provides three Buck converters (SWA, SWB, and SWC) and two LDOs (VLDO_1.0V and VLDO_1.8V). Additionally, the RTQ5136 supports a selectable interface (I2C or I3C Basic) to accommodate various application environments. A comprehensive protection mechanism is embedded to ensure safe power distribution, with the capability to record fault events in registers and signal them through PWR_GOOD and GSI_n open-drain indicators. The RTQ5136 is available in a WQFN-28L 3x4 (FC) package. The recommended junction temperature range is from -40°C to 125°C.



Key Spec.
Status Active
Vin (min) (V) 4.25
Vin (max) (V) 5.5
Number of Channels 5
Number of Buck Converters 3
Number of LDO Regulators 2
Application PC
Features Adjustable Current Limit;Adjustable Frequency;Adjustable Soft-Start;Built-in Bootstrap Switch;COT Control;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;I2C;Internal Compensation;OCP;OVP;Power Good;Stable with Ceramic Capacitor;UVP
Package Type WQFN3x4-28(FC)
  • VIN_Bulk with Input Supply Range: 4.25V to 5.5V
  • High Integration:
    ► Three High Efficiency Buck Converters
        ♦ SWA: ITDC = 6A, IMAX = 7.5A
        ♦ SWB: ITDC = 4A, IMAX = 5A
        ♦ SWC: ITDC = 1A, IMAX = 2A
    ► Two LDOs
        ♦ VLDO_1.8V: IMAX = 25mA
        ♦ VLDO_1.0V: IMAX = 20mA
  • Support Overclocking Operation
    ► SWA/B Output Voltage up to 2.2V
  • 0.75% Converter Output Accuracy
  • Fast Transient Response with A2RCOT Control
  • Support I2C and I3C Slave Control
  • Error Log Counter and Data Storage (NVM)
  • MTP Registers with Secured R/W Access
  • Programmable and DIMM Specific Registers for Customization
  • Programmable Mode for Debug and Validation
  • Telemetry for Output Current, Voltage and Power
  • Complete Protection Mechanisms
    ► VIN_Bulk Input Supply OVP
    ► OVP, UVP, OCP, HCW for Each Rails
    ► High Temp Warning and OTP
  • General Status Interrupt Function
  • Power Good Indicator