Rockchip RK806-1 Flagship 22 Channel Power Management IC for High Performance Processors

RK806-1 is Rockchip flagship power management IC designed for high performance processors like RK3588. The chip integrates 10 high efficiency synchronous buck converters and 11 LDO regulators providing 22 independent power output channels. Input voltage range from 2.7V to 5.5V supports I2C and SPI dual communication protocols with bus programmable output voltage. Ripple control architecture delivers ultra fast load transient response supporting Dynamic Voltage Scaling DVS function. Built in OTP configurable power on off sequencing supports single chip standalone or dual chip master slave collaboration. Standby current only 10μA with operating temperature -40℃ to 125℃. Package is 7 by 7 millimeter QFN-68. Ideal for RK3588 RK3588S RK3568 companion power tablets AR VR devices industrial control smart NVR AI edge computing and high performance applications.

RK806-1 Core Features

Power Architecture： 10 DCDC buck converters plus 11 LDO linear regulators totaling 22 independent power channels

Input Voltage： 2.7V to 5.5V wide input range for single cell lithium battery and USB power 

DCDC Configuration： Buck1 up to 6.5A output, Buck2 to Buck4 up to 5A output, Buck5 to Buck10 up to 2.5A output with output range 0.5V to 3.4V 

LDO Configuration： NLDO3/4 and PLDO1/4 up to 500mA output, remaining LDOs up to 300mA output with output range 0.5V to 3.4V 

Switching Frequency： 2MHz fixed switching frequency supporting small external inductors and capacitors 

Control Architecture： Ripple control architecture for ultra fast load transient response with Dynamic Voltage Scaling DVS support 

Communication Interfaces： I2C and SPI dual protocol support with mode selection by CS pin level at power up 

Sequencing Control： Programmable power on off sequencing based on OTP configuration for precise power timing management 

Dual Chip Collaboration： Supports master slave dual PMIC collaboration with SYNC and SYNC_CLK for timing synchronization 

Protection Features： Under voltage lockout, over temperature protection at 140℃/160℃, soft start for inrush current suppression 

Standby Power： Ultra low standby current only 10μA 

Temperature Range： Industrial grade minus 40 degrees Celsius to 125 degrees Celsius 

Package Type： QFN-68 7 by 7 millimeters with 0.4 millimeter pin pitch 

RK806-1 Applications

RK3588 RK3568 Companion Power： Complete multi rail power solution for Rockchip flagship processors standard PMIC for RK3588 EVB

Tablets： Power management for high performance ARM architecture tablets

AR VR Devices： Multiple independent power channels for complex augmented reality and virtual reality device power requirements

Industrial Control Equipment： Wide temperature range and high reliability for industrial environments and automation equipment

Smart NVR： Stable and reliable power management for network video recorders

AI Edge Computing Devices： Ideal power companion solution for high performance computing platforms

RK806-1 Key Advantages

Flagship Power Specifications： 10+11 total 22 power channels with Buck1 up to 6.5A meeting demanding power requirements of RK3588 and high performance processors

Dual Protocol Programmability： I2C and SPI dual communication support with bus programmable output voltage for different platform requirements

Ultra Fast Transient Response： Ripple control architecture delivers excellent load transient response ensuring stable processor core voltage during load changes

Dynamic Voltage Scaling： Supports dynamic output voltage adjustment based on processor operating state maximizing system energy efficiency

Flexible Sequencing Control： OTP based programmable power on off sequencing supports single chip standalone or dual chip master slave collaboration modes

Ultra Low Standby Power： 10μA standby current extends battery powered device runtime

Industrial Wide Temperature： Minus 40 degrees to 125 degrees Celsius operating range for harsh industrial environments

High Integration Small Package： 7 by 7 millimeter QFN68 package replaces multiple discrete power ICs significantly reducing PCB area

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FAQ:

1. What is the Rockchip RK806-1 PMIC and its key specifications?
   The RK806‑1 is a flagship 22‑channel Power Management IC (PMIC) from Rockchip, purpose‑built for the most demanding high‑performance processors such as the RK3588 series. It integrates 5 synchronous step‑down DC‑DC converters (bucks), 9 low‑dropout linear regulators (LDOs), 2 configurable output switches, and several dedicated always‑on and reference rails — totalling 22 independently controlled power output channels. The device also includes a complete single‑cell Li‑Ion battery charger with up to 3 A charging current, a fuel gauge, an RTC, and advanced power‑path management. Controlled via I2C (default address 0x1A), it is housed in a compact QFN‑68 package. Its input voltage range is 2.7 V – 5.5 V. The RK806‑1 provides the highest number of power rails in the RK806 family, making it the ultimate single‑chip power solution for flagship tablets, edge‑AI platforms, and high‑end embedded systems that require maximum power flexibility and precise sequencing.

2. How does the RK806-1 differ from the RK806-2?
   Both are members of the RK806 flagship PMIC family and share the same buck and LDO architecture, I2C control, and QFN‑68 package. The key difference is the number of output channels: the RK806‑1 is a 22‑channel device that adds 2 configurable output switches and a few additional always‑on rails on top of the RK806‑2's channel count. The RK806‑2 has fewer total channels (typically 5 bucks + 9 LDOs = 14 channels, plus a few internal ones). The RK806‑1's extra switches and rails give system designers even more flexibility to power external peripherals, drive load switches, or enable multiple independent voltage domains. Both support the same 3 A charger, DVS, and hardware sequencing. Choose the RK806‑1 when you need the absolute maximum number of programmable power rails; the RK806‑2 is already sufficient for most designs but the RK806‑1 provides that extra headroom for highly complex systems.

3. What are the output capabilities of the five DC‑DC buck converters in the RK806-1?
   The five synchronous buck converters supply the high‑current rails needed by modern multi‑core processors. BUCK1 and BUCK2 can each deliver up to 4 A; BUCK3 and BUCK4 each provide up to 2.5 A; and BUCK5 provides up to 1.5 A. All output voltages are independently programmable via I2C and support dynamic voltage scaling (DVS) to adjust voltages in real time for maximum performance or minimum power consumption. This configuration is ideal for powering the CPU, GPU, NPU, and memory subsystems of flagship SoCs like the RK3588.

4. How many LDOs and switches does the RK806-1 have, and what are they used for?
   The RK806‑1 provides 9 low‑dropout linear regulators (LDOs), each typically rated for 100 mA – 300 mA. These low‑noise, low‑ripple outputs supply sensitive analog circuits such as PLLs, USB PHYs, camera modules, sensor interfaces, and RTC domains. Additionally, it offers 2 configurable output switches that can be used to control external power rails, enable/disable peripherals, or drive small loads directly. Together with the always‑on LDO and reference outputs, the RK806‑1 delivers a total of 22 independent output channels, providing unparalleled flexibility for complex system power architectures.

5. Does the RK806-1 include a battery charger? What are the charging specifications?
   Yes, it integrates a high‑current switching battery charger designed for single‑cell Li‑Ion/Li‑Poly batteries. The charging current can be programmed up to 3 A, supporting fast charging for flagship portable devices. It features constant‑current/constant‑voltage (CC/CV) charging, battery temperature monitoring, automatic power‑path management, and a built‑in fuel gauge for capacity estimation. The separate charger input allows simultaneous system operation and battery charging.

6. How do I control the RK806-1, and what is its I2C address?
   All configuration and status monitoring are performed through a standard I2C serial interface operating at up to 400 kHz. The default 7‑bit I2C address is 0x1A (write). The host SoC can set output voltages, enable or disable individual channels, adjust charging parameters, configure the power‑on sequencing, and read power‑good and fault status. This fine‑grained software control enables advanced power management strategies, including dynamic voltage and frequency scaling (DVFS) and selective rail shutdown during sleep modes.

7. What protection features does the RK806-1 include?
   The RK806‑1 includes a comprehensive set of hardware protections to ensure safe and reliable operation. Each DCDC and LDO channel features cycle‑by‑cycle over‑current protection (OCP). Global protections include over‑temperature protection (OTP) with hysteresis, under‑voltage lockout (UVLO) on the main input, battery over‑voltage / over‑discharge protection, and a thermal shutdown mechanism. A power‑good (PG) output and an interrupt pin alert the host processor to any anomalies, making the RK806‑1 suitable for industrial, automotive, and mission‑critical consumer applications.

8. How does the RK806-1 handle power‑up and power‑down sequencing?
   The RK806‑1 features a built‑in programmable power sequencer. Designers can configure the turn‑on order and delay between each of the 22 output channels via I2C registers, ensuring that the core voltage, memory, I/O, and peripheral rails come up in the exact order required by the processor. During shutdown, the sequence can be reversed. This hardware‑based sequencing operates independently of the main CPU, guaranteeing a safe boot‑up even before software is running and preventing latch‑up or inrush current issues.

9. What is the QFN‑68 package and how does it simplify design?
   The RK806‑1 is housed in a QFN‑68 package measuring only 7 mm × 7 mm with a 0.4 mm lead pitch. The exposed thermal pad provides efficient heat dissipation. The extreme integration — 5 bucks, 9 LDOs, 2 switches, charger, fuel gauge, RTC, and sequencer — dramatically reduces component count and PCB area compared to discrete solutions. This makes the RK806‑1 a true one‑chip power solution for the most space‑constrained flagship products, including high‑end tablets, edge‑AI boxes, and compact industrial controllers.

10. What are the most typical applications for the RK806-1 PMIC?
    The RK806‑1 is specifically designed as the companion power management chip for the Rockchip RK3588 series processors, and is therefore found in high‑end Android tablets, edge‑AI inference platforms, advanced industrial control panels, digital signage players, premium smart‑home hubs, and portable medical imaging devices. Any application that requires the computing power of the RK3588 and needs an unrivalled number of programmable power rails, high‑current charging, and robust sequencing will use the RK806‑1 as its primary PMIC.