RK818 Datasheet – QFN68, Complex PMIC – RockChip

Part Number : RK818

Function : Complex Power-Management Integrated Circuit

Package : QFN68 7.0 mm x 7.0 mm Type

Manufacturers : RockChip ( http://www.rock-chips.com/ )

Image :

rk818-pmic-rockchip
Description

The RK818 is a complex power-management integrated circuit (PMIC) for multi-core system applications powered by a Li-ion or a Li-ion polymer battery cell, or by a 5V input either from an USB port or from an adaptor. The RK818 can provide a complete power management solution with very few external components.

The RK818 provides four configurable synchronous step-down converters and one synchronous step-up converter with current capability up to 4A and 2.5A, respectively. The device also contains 9 LDO regulators, one linear switch, one switch-mode charger, a battery fuel gauge, and the power path management function. 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-kHz output buffer, and real time function. The RK818 supports 32-kHz clock generation based on a crystal oscillator.

 

Pinout

rk818-datasheet-pinout

 

Features

1. Input range : 3.8V – 6V for USB input, 2.7V – 4.5V for BAT input

2. Switch mode Li-ion battery charger providing charging current up to 3A

3. Power path controller with 5A current path

4. Accurate battery fuel gauge

5. Real time clock ( RTC )

6. Low standby current of less than 40uA ( at 32 KHZ clock frequency )

 

 

Reference Site

https://github.com/linuxium/rockchips-kk/blob/master/drivers/mfd/rk818.c

 

 

RK818 Datasheet

RK818 pdf

 

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MT6328 PDF Datasheet – PMIC Chip – Mediateck

Part Number : MT6328, MT6328V

Function : Power management integrated circuit ( PMIC )

Package : VFBGA 206L

Manufactures : MEDIATEK

Images :

MT6328-pmic-mediatek.

Description

The MT6328 is power management system chip optimized for 2G/3G/4G handsets and smart phones, containing 5 buck converters and 28 LDOs optimized for specific 2G/3G/4G smart phone subsystems.
LED drivers support up to 2 channels of LEDs with independent control. Flexible control includes register mode, PWM mode and breath mode. Sophisticated controls are available for powerup, battery charging and the RTC alarm. MT6328 is optimized for maximum battery life, allowing the RTC circuit to stay alive without a battery for several hours.

Features

1. Handles all 2G/3G/4G smart phone baseband power management
2. Input range: 2.5 ~ 4.5V
3. 5 buck converters and 28 LDOs optimized for specific 2G/3G/4G smart
phone subsystems
4. Full-set high-quality audio feature: Supports uplink/downlink audio CODEC.
5. 32K RTC oscillator for system timing, 1.8 and 2.8V clock buffer output
6. Flexibility for various configurations of indicator LED current source: 2 ISINK
7. SPI interface
8. Li-ion battery charging function
9. USB Battery Charging Specification ver 1.1/1.2 (BC1.x) Compliance
10. Over-current and thermal overload protection
11. Programmable under voltage lockout protection
12. Watchdog reset
13. Flexibility hardware PMIC reset function
14. Power-on reset and start-up timer
15. Precision voltage, temperature, and current measurement fuel gauge

[…]

Pinout
MT6328-pinout

MT6328 Datasheet