Charger. MP2661 Datasheet

MP2661 Datasheet PDF


Part

MP2661

Description

I2C-Controlled Battery Charger

Manufacture

MPS

Page 30 Pages
Datasheet
Download MP2661 Datasheet


MP2661 Datasheet
MP2661
4.65V System, 500mA,I2C-Controlled Battery
Charger with Power Path Management
The Future of Analog IC Technology
for Single-Cell Li-Ion Battery
DESCRIPTION
The MP2661 is a highly integrated, single-cell,
Li-Ion/Li-Polymer battery charger with system
power path management for space-limited,
portable applications. The MP2661 uses input
power from either an AC adapter or a USB port
to supply the system load and charge the
battery independently. The charger features
trickle charge, constant current (CC) and
constant voltage (CV) regulation, charge
termination, and charge status.
The power path management function ensures
continuous power to the system by
automatically selecting the input, the battery, or
both to power the system. This power stage
features a low dropout regulator from the input
to the system and a 100mswitch from the
battery to the system. Power path management
separates the charging current from the system
load, which allows for proper charge termination
and keeps the battery in full-charge mode.
The MP2661 provides system short-circuit
protection (SCP) by limiting the current from the
input to the system and the battery to the
system. This feature is especially critical to
prevent the Li-Ion battery from being damaged
by excessively high currents. An on-chip battery
under-voltage lockout (UVLO) cuts off the path
between the battery and the system if the
battery voltage drops below the programmable
battery UVLO threshold, which prevents the Li-
Ion battery from being over-discharged. An
integrated I2C control interface allows the
MP2661 to program the charging parameters,
such as input current limit, input voltage
regulation limit, charging current, battery
regulation voltage, safety timer, and battery
UVLO.
The MP2661 is available in a 9-pin
1.55mmx1.55mm WCSP package.
FEATURES
Fully Autonomous Charger for Single-Cell
Li-Ion/Li-Polymer Batteries
Complete Power Path Management for
Simultaneously Powering the System and
Charging the Battery
±0.5% Charging Voltage Accuracy
13V Maximum Voltage for the Input Source
I2C Interface for Setting Charging
Parameters and Status Reporting
Fully Integrated Power Switches and No
External Blocking Diode Required
Built-In Robust Charging Protection
Including Battery Temperature Monitoring
and Programmable Timer
PCB Over-Temperature Protection
(PCB_OTP)
System Reset Function
Built-In Battery Disconnection Function
Thermal Limiting Regulation On-Chip
Available in a WCSP-9 (1.55mmx1.55mm)
Package
APPLICATIONS
Wearable Devices
Smart Handheld Devices
Fitness Accessories
Smart Watches
All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For
MPS green status, please visit the MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
MP2661 Rev. 1.04
www.MonolithicPower.com
12/21/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018MPS. All Rights Reserved.
1

MP2661 Datasheet
MP2661 – 0.5A, 1-CELL CHARGER W/ I2C CONTROL AND POWER PATH
TYPICAL APPLICATION
Items
HZ=1
Table 1: Operation Mode Table
I2C Control
INT Pin
CEB=1 FET_DIS=1* H to L for 16s
H to L for 4s
LDO FET
Battery FET
(charging)
Battery FET
(discharging)
Off x
x Off
xx
x = no effect
* -- FET_DIS goes back to 0 battery FET is off.
X
Off
Off
x
Off for 4s,
then on
Off for 4s,
then on
x
On
On
MP2661 Rev. 1.04
www.MonolithicPower.com
12/21/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018MPS. All Rights Reserved.
2


Features Datasheet pdf MP2661 4.65V System, 500mA,I2C-Controll ed Battery Charger with Power Path Man agement The Future of Analog IC Techno logy for Single-Cell Li-Ion Battery D ESCRIPTION The MP2661 is a highly integ rated, single-cell, Li-Ion/Li-Polymer b attery charger with system power path m anagement for space-limited, portable a pplications. The MP2661 uses input powe r from either an AC adapter or a USB po rt to supply the system load and charge the battery independently. The charger features trickle charge, constant curr ent (CC) and constant voltage (CV) regu lation, charge termination, and charge status. The power path management funct ion ensures continuous power to the sys tem by automatically selecting the inpu t, the battery, or both to power the sy stem. This power stage features a low d ropout regulator from the input to the system and a 100mΩ switch from the ba ttery to the system. Power path managem ent separates the charging current from the system load, which allows for proper charge termination and .
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