MP2624GL datasheet(17/45 Pages) MPS

17 / 45 page

MP2624 – 4.5A SW CHARGER W/ I2C CONTROL, NVDC POWER PATH, USB OTG

MP2624 Rev.1.05

www.MonolithicPower.com

4/9/2018

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

Trickle charge

Charge Current

Pre-charge

Constant Voltage Charge

CC Fast Charge

Charge Full

VBATT_FULL

VBATT_PRE

VBATT_SHORT

ITC

IBF

IPRE

ICHG

VSYS_MIN

System Voltage

Figure 4: Battery Charge Profile

During the entire charging process, the actual

charge current may be less than the register

setting due to other loop regulations like dynamic

power management (DPM) regulation (input

current limit or input voltage regulation loop), or

thermal regulation. Thermal regulation reduces

the

charge

current,

the

junction

temperature does not exceed the pre-set limit.

The multiple thermal regulation thresholds (from

60ºC to 120ºC) help system design meet thermal

requirements for different applications. The

junction temperature regulation threshold can be

set via the REG06 Bit [1:0].

A new charge cycle starts when the following

conditions are valid:



The input power is re-plugged.



Battery charging is enabled by I2C, and

--------

is forced to a low logic.



No thermistor fault.



No safety timer fault.



No battery over voltage.



The BATT FET is not forced to turn off.

Automatic Recharge

When the battery is charged full or the charging

is terminated, the battery may be discharged

because of the system consumption or self-

discharge.

When

the

battery

voltage

discharged

below

the

recharge

threshold,

automatically the MP2624 starts a new charging

cycle.

--------

Control

--------

is a logic input pin for enabling or disabling

battery charging by turning on/off the DC/DC or

restarting a new charging cycle. The battery

charging is enabled when the REG01 Bit [5:4] is

set to 01, and CE

--------

is pulled to low logic.

Indication

Apart from multiple status bits designed in the I2C

registers, the MP2624 also has a hardware

status output pin (STAT

----------------

). The status STAT in

different states is shown in Table 1.

Table 1: Operation Indications

Charging State

STAT

Charging

Low

Charging complete,

sleep mode, charge

disable

High

Charging suspended

Blinking at 1Hz

Battery Over-Voltage Protection

The MP2624 is designed with built-in battery

over-voltage protection. When the battery voltage

exceeds VBATT_FULL + 160mV, the MP2624

suspends immediately the charging and asserts

a fault. When battery over-voltage protection

occurs, only the charging is disabled, and the

DC/DC will keep operating.

MP2624GL Datasheet(PDF) 17 Page - Monolithic Power Systems

MP2624GL Datasheet(HTML) 17 Page - Monolithic Power Systems

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45

Datasheet Download

Link URL