Rockchip RK806-2 Flagship PMIC for RK3588 Series Processors

RK806-2 is a high performance power management IC from Rockchip designed for RK3588 and RK3588S flagship processors featuring dual PMIC master slave power supply solution. The chip comes in QFN-68 package 7 by 7 millimeters supporting two RK806-2 devices working together to provide complete power solution for high performance processors. RK806-2 dual PMIC solution is widely used in RK3588 EVB and RK3588S EVB development platforms for ARM PC NVR server IPC large screen display AIoT products as well as high end tablets AR VR and personal mobile internet devices

RK806-2 Core Features

Product Positioning： Dedicated PMIC for RK3588 RK3588S flagship processors

Operating Mode： Supports dual PMIC master slave collaboration with two RK806-2 devices working in parallel

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

Power Solution： RK3588 EVB adopts dual RK806-2 PMIC power supply solution

Memory Companion： Works with LPDDR4X eMMC 5.1 and SPI Flash

Power Integrity： Provides stable and complete power distribution network for high performance processors

RK806-2 Applications

RK3588 EVB： Power solution for ARM PC NVR server IPC large screen display devices

RK3588S EVB： Power management for high end tablets AR VR devices personal mobile internet devices

AIoT Industrial Devices： ARM PC network video recorder servers smart cameras large screen displays

Consumer Electronics： High end tablets augmented reality virtual reality devices mobile internet terminals

Edge Computing Devices： AI edge computing nodes smart gateways industrial computers

RK806-2 Key Advantages

Flagship Companion Solution： Rockchip official PMIC solution tailored for RK3588 series processors fully validated

Dual Chip Collaboration： Supports two RK806-2 in master slave configuration for complex power requirements

Complete Power Management： Multiple DCDC and LDO outputs for full system power distribution

Platform Standard： RK3588 EVB and RK3588S EVB both adopt RK806-2 dual PMIC solution

Industrial Grade Reliability： Suitable for both AIoT industrial devices and consumer electronics

High Integration： QFN-68 package integrates multiple power management functions

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FAQ:

1. What is the Rockchip RK806-2 PMIC and its key specifications?
   The RK806‑2 is a flagship Power Management IC (PMIC) purpose‑built for the Rockchip RK3588 series of high‑performance processors. It integrates 5 synchronous step‑down DC‑DC converters, 9 low‑dropout linear regulators (LDOs), 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. The device communicates via I2C (default address 0x1A) and is housed in a compact QFN‑68 package. Its input voltage range is 2.7 V – 5.5 V. Designed to meet the stringent power‑up/down sequencing and dynamic voltage scaling demands of the RK3588, it provides a complete power solution for flagship tablets, edge‑AI devices, and high‑end embedded systems.

2. How does the RK806-2 differ from the RK809 or RK817 PMICs?
   The RK806‑2 is a more powerful, application‑processor‑focused PMIC than the RK809/RK817. The RK809/RK817 both include an integrated audio codec (DAC, headphone amplifier, microphone input), which the RK806‑2 deliberately omits to focus entirely on power delivery. In return, the RK806‑2 offers a higher‑current battery charger (3 A vs. 2.5 A), additional LDOs for finer power sequencing, and improved dynamic voltage scaling (DVS) across all buck rails. It is pin‑compatible with other RK806 variants. Choose the RK806‑2 when you need a no‑compromise power solution for the RK3588 and require maximum current, multi‑rail sequencing, and do not need an on‑chip audio codec.

3. What are the output capabilities of the five DC‑DC buck converters in the RK806-2?
   The five synchronous buck converters deliver the high‑current rails required by the RK3588’s CPU, GPU, NPU, and memory subsystems: BUCK1 and BUCK2 can each supply up to 4 A; BUCK3 and BUCK4 each provide up to 2.5 A; and BUCK5 provides up to 1.5 A. All outputs are independently programmable via I2C and support dynamic voltage scaling (DVS) to adjust voltages on‑the‑fly for performance or power savings — a critical feature for the heterogenous core architecture of the RK3588.

4. How many LDOs does the RK806-2 have, and what are they used for?
   The RK806‑2 provides 9 low‑dropout linear regulators (LDOs), each typically rated for 100 mA – 300 mA. These low‑noise, low‑ripple outputs are dedicated to sensitive analog and always‑on circuits: PLLs, USB PHYs, camera modules, sensor interfaces, and RTC domains. One LDO is a special ultra‑low‑quiescent‑current RTC supply that keeps the system clock and critical registers alive during suspend or power‑off. The high number of LDOs allows clean, isolated power domains for noise‑sensitive peripherals.

5. Does the RK806-2 include a battery charger? What are the charging specifications?
   Yes, it integrates a powerful switching battery charger designed for single‑cell Li‑Ion/Li‑Poly batteries. The charging current can be programmed up to 3 A — higher than many other Rockchip PMICs — making it suitable for fast‑charging flagship devices. It supports 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 RK806-2, 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 processor can set output voltages, enable/disable individual rails, adjust charging parameters, configure the power‑on sequencing, and read power‑good and fault status. This level of software control enables advanced power management strategies, including dynamic voltage and frequency scaling (DVFS), in complex multi‑core systems like the RK3588.

7. What protection features does the RK806-2 include?
   The RK806‑2 incorporates a full suite of hardware protections to guarantee 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 SoC to any anomalies, ensuring the RK3588 platform operates safely in industrial, automotive, and consumer applications.

8. How does the RK806-2 handle power‑up and power‑down sequencing for the RK3588?
   The RK806‑2 includes a built‑in programmable power sequencer that controls the turn‑on order and delay between each regulator. Designers can configure the sequence via I2C to match the exact requirements of the RK3588 — ensuring the core voltage, memory, and I/O rails come up in the correct order. 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 issues.

9. What is the QFN‑68 package and how does it simplify system design?
   The RK806‑2 is housed in a QFN‑68 package measuring 7 mm × 7 mm with a 0.4 mm lead pitch. The exposed thermal pad ensures efficient heat dissipation. The high level of integration — five bucks, nine LDOs, charger, fuel gauge, RTC, and sequencer — dramatically reduces component count and PCB area compared to discrete solutions. This makes it a true one‑chip power solution for space‑constrained flagship products built around the RK3588, such as high‑end tablets, AI edge boxes, and compact industrial computers.

10. What are the most typical applications for the RK806-2 PMIC?
    The RK806‑2 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, industrial control panels, digital signage players, advanced smart‑home hubs, and portable medical imaging devices. Any application that requires the computing power of the RK3588 and needs a reliable, high‑current, multi‑rail power supply with precise sequencing will use the RK806‑2 as its primary PMIC.