RK809 Datasheet Rev 1.2
Rockchip
RK809
Datasheet
Revision 1.2
Nov.2018
Copyright ©2018 Fuzhou Rockchip Electronics Co., Ltd. 1
RK809 Datasheet Rev 1.2
Revision History
Date
Revision
Description
2018-11-20
2018-8-28
2018-4-2
1.2
1.1
1.0
Add RK809-2/-3 power up sequence
Spec change @ power up sequence
Initial release
Copyright ©2018 Fuzhou Rockchip Electronics Co., Ltd. 2
RK809 Datasheet Rev 1.2
Table of Content
Table of Content .................................................................................................. 3
Figure Index ....................................................................................................... 5
Table Index 6
Warranty Disclaimer ............................................................................................. 7
Chapter 1 Introduction ....................................................................................... 8
1.1 Overview ............................................................................................. 8
1.2 Feature ................................................................................................ 9
1.3 Typical Application Diagrams ................................................................ 10
Chapter 2 Package information ........................................................................... 12
2.1 Ordering information ........................................................................... 12
2.2 Top Marking ....................................................................................... 12
2.3 Dimension .......................................................................................... 13
2.4 Pin Assignment ................................................................................... 14
2.5 Pinout Number Order ........................................................................... 14
Chapter 3 Electrical Characteristics ...................................................................... 17
3.1 Absolute Maximum Ratings .................................................................. 17
3.2 Recommended Operating Conditions ..................................................... 17
3.3 DC Characteristics ............................................................................... 17
Chapter 4 Function Description ........................................................................... 22
4.1 POWER UP/POWER DOWN .................................................................... 22
4.2 BATTERY FUEL GAUGE ......................................................................... 22
4.3 BUCK CONVERTERS ............................................................................. 22
4.4 SWITCHOUT CONVERTER ..................................................................... 22
4.5 LOW DROPOUT REGULATORS (LDOS) .................................................... 22
4.6 REAL TIME CLOCK (RTC) ...................................................................... 22
4.7 RC OSCILLATOR .................................................................................. 23
4.8
I2S interface ...................................................................................... 23
4.9 Audio CODEC ...................................................................................... 23
4.10 Head Phone driver ............................................................................... 23
4.11 ClassD driver ...................................................................................... 23
4.12 POWER SEQUENCE .............................................................................. 23
Chapter 5 Register Description ............................................................................ 26
5.1 Register Summary .............................................................................. 26
5.2 Register Description ............................................................................ 31
Chapter 6 Thermal Management ....................................................................... 103
Copyright ©2018 Fuzhou Rockchip Electronics Co., Ltd. 3
RK809 Datasheet Rev 1.2
6.1 Overview .......................................................................................... 103
6.2 Package Thermal Characteristics .......................................................... 103
Copyright ©2018 Fuzhou Rockchip Electronics Co., Ltd. 4
RK809 Datasheet Rev 1.2
Figure Index
Fig. 1-1 RK809 Typical Application Diagram for no battery .................................... 10
Fig. 1-2 RK809 Typical Application Diagram for two battery .................................. 11
Fig. 2-1 QFN687mm X 7mm ............................................................................. 13
Fig. 2-2 Pin Assignment QFN7x7-68(Pitch=0.35mm) ........................................... 14
Copyright ©2018 Fuzhou Rockchip Electronics Co., Ltd. 5
RK809 Datasheet Rev 1.2
Table Index
Table 4-1 RK809-1 Power up/down sequence(x:BUCK3 voltage determined by external
divided resistor) ........................................................................................ 24
Table 6-1 Thermal Resistance Characteristics .................................................... 103
Copyright ©2018 Fuzhou Rockchip Electronics Co., Ltd. 6
RK809 Datasheet Rev 1.2
Warranty Disclaimer
Rockchip Electronics Co.,Ltd makes no warranty, representation or guarantee (expressed, implied, statutory, or otherwise) by or
with respect to anything in this document, and shall not be liable for any implied warranties of non-infringement,
merchantability or fitness for a particular purpose or for any indirect, special or consequential damages.
Information furnished is believed to be accurate and reliable. However, Rockchip Electronics Co., Ltd assumes no responsibility
for the consequences of use of such information or for any infringement of patents or other rights of third parties that may
result from its use.
Rockchip Electronics Co.,Ltd’s products are not designed, intended, or authorized for using as components in systems intended
for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which
the failure of the Rockchip Electronics Co.,Ltd’s product could create a situation where personal injury or death may occur,
should buyer purchase or use Rockchip Electronics Co.,Ltd’s products for any such unintended or unauthorized application,
buyers shall indemnify and hold Rockchip Electronics Co.,Ltd and its officers, employees, subsidiaries, affiliates, and distributors
harmless against all claims, costs, damages, expenses, and reasonable attorney fees arising out of, either directly or indirectly,
any claim of personal injury or death that may be associated with such unintended or unauthorized use, even if such claim
alleges that Rockchip Electronics Co.,Ltd was negligent regarding the design or manufacture of the part.
Copyright and Patent Right
Information in this document is provided solely to enable system and software implementers to use Rockchip Electronics Co.,
Ltd ’s products. There are no expressed or implied copyright licenses granted hereunder to design or fabricate any integrated
circuits or integrated circuits based on the information in this document.
Rockchip Electronics Co.,Ltd does not convey any license under its patent rights nor the rights
of others.
All copyright and patent rights referenced in this document belong to their respective owners and
shall be subject to corresponding copyright and patent licensing requirements.
Trademarks
Rockchip and RockchipTM logo and the name of Rockchip Electronics Co.,Ltd’s products are trademarks of Rockchip Electronics
Co.,Ltd. and are exclusively owned by Rockchip Electronics Co.,Ltd. References to other companies and their products use
trademarks owned by the respective companies and are for reference purpose only.
Confidentiality
The information contained herein (including any attachments) is confidential. The recipient hereby acknowledges the
confidentiality of this document, and except for the specific purpose, this document shall not be disclosed to any third party.
Reverse engineering or disassembly is prohibited.
ROCKCHIP ELECTRONICS CO.,LTD. RESERVES THE RIGHT TO MAKE CHANGES IN ITS PRODUCTS OR PRODUCT
SPECIFICATIONS WITH THE INTENT TO IMPROVE FUNCTION OR DESIGN AT ANY TIME AND WITHOUT NOTICE
AND IS NOT REQUIRED TO UNDATE THIS DOCUMENTATION TO REFLECT SUCH CHANGES.
Copyright ©2018 Rockchip Electronics Co.,Ltd.
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by
any means, electric or mechanical, by photocopying, recording, or otherwise, without the prior written consent of Rockchip
Electronics Co.,Ltd.
Copyright ©2018 Fuzhou Rockchip Electronics Co., Ltd. 7
RK809 Datasheet Rev 1.2
Chapter 1 Introduction
1.1 Overview
The RK809 is a complex power-management integrated circuit (PMIC) integrated
CODEC for multi-core system applications powered by an external power supply. The
RK809 can provide a complete power management solution with very few external
components.
The RK809 provides five configurable synchronous step-down converters. The
device also contains 9 LDO regulators, two switches and a battery fuel gauge. Power-
up/power-down controller is configurable and can support any customized power-
up/power-down sequences (OTP based). A real-time clock (RTC) is also integrated to
provide a 32.768-kHz output buffer, and real time function. The RK809 supports 32.768-
kHz clock generation based on a crystal oscillator. It also includes Audio CODEC , real
ground Head phone driver and ClassD driver.
A “battery fuel gauge” is integrated in the RK809. Using the proprietary algorithms
and the sensed battery current and voltage, the gauge can accurately calculate the
battery capacity based on the charging/discharging characteristics of the battery
preloaded in the system. The gauge then sends the battery capacity information to the
processor through the I2C interface.
The RK809 can dynamically adjust the output voltage of each DC-DC converter, as
required by the processor based on the processor’s operation status so as to maximize
the system efficiency. The output voltages of most channels can be configured through
the I2C interface. The inputs of all channels have soft start function, which greatly
reduces the inrush current at the startup.
The 2MHz switching frequency allows small size inductors to be used for both buck and
boost converters. Also, as all the power switches are integrated on chip, no external
power switches and Schottky diodes are needed, which reduces the system cost
significantly.
The RK809 is available in a QFN68 7.0 mm x 7.0 mm package, with a 0.35-mm pin pitch.
Copyright ©2018 Fuzhou Rockchip Electronics Co., Ltd. 8