SM5470 SILICONMITUS | Alldatasheet
Document overview
- Manufacturer or author: SMCHOI
- PDF pages: 2
Technical content
Features
Integrated External OVP Switch Controller with a Very Fast Response time Highly Integrated Switched Capacitor Charger with a Dual mode o Maximum 6A Charging Current at 2:1 mode o Maximum 4A Charging Current at 1:1 mode 97.3% Efficiency at VBAT=4V and IBAT=2A at 2:1 mode Embedded Infinite Regulation Loop with an internal QRB Swi tch o VBAT Output Voltage Regulation o IBAT Output Current Regulation Very Accurate 5-Channel ADC with 12-Bit Resolution o VBUS Input Voltage with 4mV Resolution o IBUS Input Current with 2mA Resolution o VBAT Output Voltage with 2mV Resolution o IBAT Output Current with 2mA Resolution o Die Temperature with 1°C Resolution Smart Protections o Programmable Input/Output Over-Voltage Protection o Programmable Input/Output Over-Current Protection o Programmable Input Under-Current Protection o Flying Capacitor Short Protection o Die Thermal Shutdown o Watchdog Timer Up to 1MHz Fast-mode Plus I2C Interface 36-Bump, 2.65mm x 2.65mm WLCSP Package
Applications
Smartphones, Tablet PC, Mobile IOT and Portable Devices
Description
The SM5470 is a highly integrated dual- mode switched capacitor charger that integrates an external OVP switch controller, an infinite regulation loop and a very accurate 12- Bit ADC. The device features not only a switched-capacitor architecture for a current doubler mode but also a path- through topology for a bypass mode. This very high efficiency switched capacitor charger with a very low R DS_ON resistance reduces thermal dissipation of a fast charging system, which results in a shorter charging time. The device integrates a stand-alone infinite regulation loop for VBAT and IBAT using an internal Q RB switch without an external OVP switch. The device also includes a very accurate 12- bit ADC to provide input voltage, input current, output voltage, output current and die temperature needed to manage the charging profile of fast charging system. The device integrated very powerful protection schemes such as o ver-voltage, over -current, under -current, over - temperature, a flying capacitor short -circuit and watchdog timer to secure a robust charging for the system. The SM5470 is available in 2.65 mm x 2.65 mm, 36-bumps WLCSP package. Device Information Part Package Size SM5470 36-Bump WLCSP 0.4 mm Pitch 2.65mm x 2.65mm VBUS OVPGATE VBUSCON USB Type-C Connector Switched Cap acitor Circu it s MIDVBUS BATSNSP BATSNSN /CSNSP CSNSN SCL SDA nINT PGND AGND Interface VOUT Battery Processor ADC Protection Circu it CONFIDENTIAL
2020 Silicon Mitus, Inc. www.siliconmitus.com July 2021 – Rev. 0.0.0 Silicon Mitus cannot assume any responsibility for the consequence of use of information furnished nor for any infringement o f patents or other rights of third parties which may result from its use. No Circuit patent licenses are implied. Silicon Mitus reserves the right to change the circuitry and specifications without notice at any time. This publication supersedes and replaces all information previously supplied. Silicon Mitus products are not authorized for use as critical components in life support devices or systems without the express written approval of Silicon Mitus. 2020 Silicon Mitus, Inc. - Printed in Korea - All Rights Reserved CONFIDENTIAL