SM5414

www.siliconmitus.com

© 2017 Silicon Mitus, Inc.

August 2018

Simplified Block Diagram

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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 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.

© 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

D-

D+

GND

USB/DCP

Adapter

Q1

(50m

Ω)

Q2

(50m

Ω)

Q3

(70m

Ω)

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

+

-

Q4

(30m

Ω)

THR

Reduction

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