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RT9470 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT9470 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 50 page  RT9470/D Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS9470/D-02 October 2023 www.richtek.com 1 3A Single Cell Switching Battery Charger General Description The RT9470/D device are a highly-integrated 3A switch mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C serial interface with charging and system settings makes the device a truly flexible solution. The recommended junction temperature range is −40C to 150C, and the ambient temperature range is −40C to 85C. Applications ⚫ Smart Phone/Tablet PC ⚫ Personal Information Appliances ⚫ Portable Device and Accessory Ordering Information Package Type WSC : WL-CSP-30B 2.1x2.5 (BSC) RT9470/D BC1.2 Detection Default : Not Support D : Support Note: Richtek products are Richtek Green Policy compliant and compatible with the current requirements of IPC/JEDEC J-STD-020. Features ⚫ High Efficiency, 1.5MHz, Synchronous Switch-Mode Buck Charger 92% Charge Efficiency at 2A from 5V Input and 3.8V Battery Support 3.9V to 13.5V Input Voltage Range Average Input Current Regulation (AICR) Minimum Input Voltage Regulation (MIVR) Minimum Input Voltage Regulation Track (MIVR Track) Charge Current Regulation (CCR) Charge Voltage Regulation (CVR) Charge Voltage Regulation Track (CVR Track) Junction Thermal Regulation (JTR) ⚫ Supports USB On-The-Go (OTG) 92% Boost Efficiency at 1A with 3.8V Battery and 5.15V Output OTG Current Limit Regulation (OCLR) OTG Voltage Limit Regulation (OVLR) ⚫ Protection Over-Temperature Protection (OTP) VBUS Over-Voltage Protection (VBUS OVP) Battery Over-Voltage Protection (VBAT OVP) System Over-Voltage Protection (VSYS OVP) System Under-Voltage Protection (VSYS UVP) System Over-Load Protection (VSYS OLP) Cycle-by-Cycle Over-Current Protection (OCP) OTG Low Battery Protection (OTG LBP) Simplified Application Circuit BAT VBUS PMID Host BTST SW SYS TS Battery Pack System QON USB RT9470/D VAC CBUS CSYS CBTST L CBAT Host control I 2 C BUS REGN |
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