RK809-5 Rockchip Professional PMIC Power Management IC for Smartphones Wearables QFN-68

RK809-5 Product Overview

The RK809-5 is a professional Power Management IC (PMIC) from Rockchip, packaged in QFN-68-EP (7x7mm), designed for smartphones, tablets, wearables, and consumer electronics requiring long battery life . The device integrates multiple DCDC buck converters and LDO linear regulators, providing efficient and stable power management solutions that simplify hardware design, reduce external component requirements, and lower system power consumption and cost .

The RK809-5 is known for its low power design and high integration. Its power management strategy focuses on minimizing power consumption while maintaining normal device operation, effectively extending battery life . The chip supports multiple battery types with integrated charging management circuits and flexible voltage output configuration. It also integrates audio codec functionality supporting two microphone inputs, headphone output, and Class D amplifier output .

Notably, the RK809-5 has been officially marked as discontinued and replaced by the new revision RK809-5A . The new PMIC features more sensitive reset voltage detection but may require a bootloader update to address system stability issues . Currently, abundant inventory remains available in the market with pricing ranging from approximately $2.54for1+unitsto$1.42 for 1000+ units .

RK809-5 Core Features

Multiple DCDC Buck Converters： Integrates multiple high-efficiency synchronous step-down DCDC converters providing stable power for processor cores, memory, and other major loads, supporting dynamic voltage scaling for power optimization 

Multiple LDO Linear Regulators： Integrates multiple high-performance LDO regulators providing low-noise, high-PSRR clean power for sensitive circuits such as PLLs, audio codecs, and sensors 

Integrated Audio Codec： Built-in audio codec functionality supporting two microphone inputs, headphone output (HP_L/HP_R), and Class D amplifier output (SPKP/SPKN). Audio routing must follow design guidelines: SPKP/SPKN as differential pairs with ground shielding, 20mil width; HPL/HPR with separate ground shielding, minimum 10mil width; MIC routing minimum 8mil width 

Integrated Battery Charging Management： Supports multiple battery types with integrated charging circuits and battery protection for smartphones, tablets, and energy-efficient portable devices 

Real-Time Clock RTC： Integrated RTC supporting system wake-up, time management, and timing applications

I2C Control Interface： I2C bus communication support for software configuration of output voltages, power sequencing, and operating modes for flexible system power management 

Thermal Management： Integrated thermal management prevents overheating, ensuring stable system operation under high temperature conditions 

Low Power Design： Power management strategy focused on minimizing power consumption while maintaining normal device operation, effectively extending battery life for portable devices 

Package Type： QFN-68-EP (7x7mm) with exposed pad for enhanced thermal dissipation, ideal for compact PCB designs 

Temperature Range： -30°C to +85°C 

Environmental Compliance： RoHS compliant with lead-free process 

RK809-5 Applications

Smartphones： Provides stable voltage output for smartphones with effective battery charge/discharge management, ensuring long battery life during extended use 

Tablets： Ideal power solution with multiple output voltages, charging management, and protection functions for high-load stable operation 

Wearable Devices： Ultra-low power design significantly extends battery life with flexible voltage output and intelligent battery management for long-term stable operation 

OTT TV Boxes Set-Top Boxes： Complete power management and audio functionality for home entertainment devices 

Portable Media Players： Integrated power management and audio codec for portable multimedia devices 

Embedded Systems： Provides multiple voltage rails with high-efficiency power conversion and protection for long-term reliable operation 

IoT Devices： High-efficiency power conversion and charging management for low-power long-duration IoT applications 

Smart Devices： Power management core for smart home control panels, smart speakers, and consumer IoT products 

RK809-5 Key Advantages

High Integration Single-Chip Solution： RK809-5 integrates multiple DCDC converters, LDO regulators, battery charging management, RTC, and audio codec in a single chip, replacing multiple discrete power ICs. This significantly simplifies system power design, reduces external component count, lowers BOM cost, and reduces production complexity 

Low Power Design Extends Battery Life： RK809-5 power management strategy focuses on minimizing power consumption while maintaining normal device operation. For smartphones, tablets, and wearables, this significantly extends battery life, which is the core value proposition of this chip 

Complete Audio Subsystem： Integrated audio codec provides two microphone inputs, headphone output, and Class D amplifier output. PCB design guidelines require differential SPK routing with ground shielding at 20mil width; separate ground shielding for left and right channels (minimum 10mil width, not adjacent); and MIC routing minimum 8mil width. All audio signals must be kept away from high-speed signals like LCD and DRAM with adjacent ground planes 

Multiple Battery Type Support： Supports various battery types including lithium-ion batteries, suitable for smartphones, tablets, wearables, and other portable devices 

Flexible Programmable Configuration： I2C bus allows dynamic configuration of output voltages and power sequencing without PCB modifications for rapid product family development 

Thermal Management for System Stability： Integrated thermal management prevents overheating, ensuring stable operation under high temperature conditions and improving product reliability and safety 

Industrial Grade Reliability： -30°C to +85°C wide temperature range for both industrial and consumer applications 

Availability and Alternative： According to ODROID documentation, the RK809-5 has been officially discontinued and replaced by revision RK809-5A . The new PMIC features more sensitive reset voltage detection, which may affect system stability, requiring a bootloader update. Currently, abundant inventory remains available with pricing at LCSC approximately $2.54for1+unitsand$1.42 for 1000+ units, with over 1,692 units in stock 

Broad Application Validation： RK809-5 has been mass-production validated across smartphones, tablets, wearables, OTT boxes, and IoT devices, proven mature, stable, and reliable

Why Choose QIXINWEI

Years of experience in the electronics industry. Trusted by global customers.

Massive In-Stock Inventory – Ready to ship promptly

BOM Matching Service – One-stop solution, save time

PCBA Customization – Professional engineering team creates tailor-made solutions based on your needs

Cost-Effective & Efficient – Better channel, better cost

A dedicated team makes your procurement smoother.

Contact us for BOM quotes or PCBA inquiries

FAQ:

1. What is the RK809-5 PMIC and its key specifications?
   The RK809-5 is a highly integrated Power Management IC (PMIC) from Rockchip, designed for smartphones, tablets, wearables, and other portable devices. It combines 4 synchronous DC‑DC buck converters, 8 low‑dropout linear regulators (LDOs), a complete single‑cell Li‑Ion battery charger (up to 2.5 A), a fuel gauge, an RTC, and a built‑in audio codec (DAC + headphone amp + microphone input). The device communicates via I2C (default address 0x1A) and is housed in a compact QFN‑68 package (7 mm × 7 mm). Key input voltage range: 2.7 V – 5.5 V. It is a popular companion chip for many Rockchip SoCs, providing an all‑in‑one power, charging, and audio solution.

2. What are the output capabilities of the four DC‑DC buck converters?
   The four synchronous buck converters provide the main power rails: BUCK1 and BUCK2 can each deliver up to 4 A, BUCK3 up to 2.5 A, and BUCK4 up to 2.5 A. All output voltages are programmable via I2C, enabling dynamic voltage scaling (DVFS) for the CPU core, GPU, memory, and I/O domains. This high‑current capability makes the RK809‑5 ideal for powering multi‑core application processors in tablets and smartphones.

3. How many LDOs does the RK809-5 have, and what are they used for?
   It provides 8 LDO channels, each typically rated for 100 mA – 300 mA. These low‑noise regulators supply sensitive analog circuits such as PLLs, USB PHYs, audio codecs, camera modules, and always‑on RTC domains. One LDO is dedicated as a low‑quiescent‑current RTC supply, allowing the system clock and critical registers to remain powered during suspend or power‑off states.

4. Does the RK809-5 include a battery charger? What are the charging specifications?
   Yes, it integrates a switching battery charger for single‑cell Li‑Ion/Li‑Poly batteries. The charging current can be programmed up to 2.5 A, and 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 charger input is separate from the system input, allowing simultaneous operation and charging.

5. What audio features are integrated into the RK809-5?
   The on‑chip audio codec supports a 24‑bit/192 kHz stereo DAC, a headphone amplifier delivering up to 30 mW per channel, and a microphone input with a programmable gain amplifier (PGA). It offers both analog and I2S/PCM digital audio interfaces, enabling high‑quality playback, voice recording, and hands‑free calls. This built‑in audio eliminates the need for an external codec in many consumer designs.

6. How do I control the RK809-5, and what is its I2C address?
   All functions are controlled 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 read and write internal registers to set output voltages, enable or disable power channels, adjust charging parameters, configure the audio path, and read status flags. This level of control enables efficient power management and dynamic voltage scaling in portable devices.

7. What protection features does the RK809-5 include?
   The RK809‑5 provides comprehensive safeguards: cycle‑by‑cycle over‑current protection (OCP) on each DCDC and LDO, 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) flag and an interrupt output notify the host of any fault conditions, ensuring safe operation in consumer and industrial products.

8. What is the QFN‑68 package and how does it benefit design?
   The RK809‑5 is housed in a QFN‑68 package measuring only 7 mm × 7 mm with a lead pitch of 0.4 mm. It features an exposed thermal pad for efficient heat dissipation. The high integration — power, audio, charging, and RTC — drastically reduces component count and PCB area, making it a true one‑chip solution for compact smartphones, tablets, and wearables.

9. How does the RK809-5 differ from the RK817-5 PMIC?
   Both are highly integrated Rockchip PMICs with similar DCDC/LDO and audio capabilities. The main differences lie in output current ratings and target platforms. The RK817-5 typically provides slightly lower buck currents (BUCK1/2 up to 2.5 A, BUCK3 1.5 A) and is often used with entry‑level to mid‑range SoCs. The RK809-5 upgrades BUCK1/2 to 4 A, making it more suitable for higher‑power application processors. The audio codec specifications are very similar. Both share the same QFN‑68 package and I2C control. Choose the RK809‑5 for designs that demand more CPU core current; the RK817‑5 remains a cost‑effective option for lower‑power platforms.

10. What are the most typical applications for the RK809-5?
    It is widely used in Rockchip‑based tablets, smartphones, portable media players, smart wearables, IoT gateways, and other battery‑powered devices that use SoCs such as RK3288, RK3399, PX30, RK3326, and similar. Its integrated audio, charger, and compact size make it a versatile and popular power management choice for both consumer and industrial mobile products.