SM5414 SILICONMITUS | Alldatasheet
Document overview
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Technical content
Features
Dual-Path Output to Power-up System in Dead Battery Single Input for USB/TA High-Efficiency Synchronous Switching Regulator 20 V Maximum Withstanding Input Voltage OVP Selectable over I2C Minimize Charging Time with Remote Sense Up to 2.5 A Load Current for System or Battery Programmable Charge Parameters via I2C Compatible Interface . Fast Charge Current . Charge Termination Current . Battery Regulation Voltage . Pre-charge Current . Fast Charge Threshold Voltage . Charge Reduction Threshold Voltage 400 kHz Full-Speed I2C Interface 1.5 MHz Switching Frequency Charge Reduction Mode for Maximizing Charging Efficiency Protection . Thermal Protection . Thermal Regulation . Input / Output Overvoltage Protection . Adaptive Input Current Limit Protection (AICL) . Reverse Leakage Protection . No Battery Detection over Pin Detection . Battery OVP Protection . Over-Current Protection in Discharge Mode Boost Mode Operation for USB OTG . Output Voltage: 5.0 V to 5.2 V, Programmable at 900 mA 25-bump 2.08 mm x 2.08 mm WLCSP Package
Applications
Mobile and Smart Phones Tablets Portable Devices
Description
The SM5414 is a fully programmable switching charger with dual-path output for single-cell Li-Ion and Li- Polymer batteries. This dual-path output allows mobile applications with fully discharged battery or dead battery to boot up the system. High efficiency and switch-mode operation reduce heat dissipation and allow for higher current capability for a given package size. In addition, the device features single input with a
20 V withstanding input, and charges the battery with
the current up to 2.5 A. The charging parameters and operating modes are fully programmable over an I2C Interface that operates up to 400KHz. The SM5414 is a highly integrated synchronous switch- mode charger, featuring integrated OVP and Power FETs. The charger and boost regulator circuits switch at 3 MHz to minimize the size of external passive components. The device is able to operate as a boost regulator for the USB- OTG function via either I2C command or an external pin from the host or processor. The SM5414 is available in a 25-bump, 2.08 mm x 2.08 mm, WLCSP package. Device Information Part Package Size SM5414 25 WLCSP 2.08 mm x 2.08 mm
www.siliconmitus.com © 2017 Silicon Mitus, Inc. August 2018 Simplified Block Diagram Silicon Mitus cannot assume any responsibility for the consequence of use of information furnished nor for any infringement of patents or other rights of third parties which may result from its use. No Circuit patent licenses are implied. Silicon Mitus reserves t he 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 writt en approval of Silicon Mitus. © 2017 Silicon Mitus, Inc. - Printed in Korea - All Rights Reserved DC up to 20V (OVP:6.5V/14.5V) Interrupt SDA SCL Processor GPIO Processor GPIO 1-Cell Li-Ion Battery VBUS LX Current Path Control 150C Tj PGND VF /ID BUCK PWM, CC, CV, Registers & I2C INTERFACE CONTROL BLOCK AICL OVP UVLO THERMAL SHUTDOWN System I/O GND 1µF Application System IFAST_CHG PWM DRV VBUS VTH Idischarge VTrickle VTH_TRK Weak Battery 2.2µF PMID BOOT -Vprechg Vpre-chg Input Current Detect Linear ITrickle Iprechg VBUS GND USB/DCP Adapter (50mΩ) (50mΩ) (70mΩ) NOBAT SDA SCL nINT FS I2C Interface VL nCHGEN VSYS SM5414 disabled enabled 1.5MHz VL All other enable conditions=1 Charger Enabled I2C bit, SUSPEND=0 & CHGEN=1 BATSNSN VL Internal Regulator PMID (30mΩ) THRReduction 100C Tj + THERMAL REGULATION CHG disabled CHG enabled 1µF 22nF 1µH 10µF 4.7µF nSHDN CHGOUT BATREG I2C disable I2C enabled I2C disabled connected on the PCB VIO