BRCL4056BSE
Rev.D Feb.-2019
描述
/
Descriptions
DATA SHEET
BRCL4056BSE 一款完整的恒定电流/恒定电压线性控制单节锂离子电池充电器，
具有电池正负极反接保护
功½。其 ESOP-8 封装与较少的外部元件数目½得 BRCL4056BSE 成为便携式应用的理想选择。
BRCL4056BSE 可以适合 USB 电源和适配器电源工½。
由于采用了内部 PMOSFET 架构，加上防倒充电路，所以不需要外部检测电阻器和隔离二极管。热反馈可
对充电电流进行自动调节，以便在大功率操½或高环境温度条件下对芯片温度加以限制。充满电压固定于
4.20V，
而充电电流可通过一个电阻器进行外部设½。
½电池达到 4.20V 之后，
充电电流降至设定值 1/10，
BRCL4056BSE 将自动终止充电。
½输入电压（交流适配器或 USB 电源）被拿掉时，BRCL4056BSE 自动进入一个½电流状态，电池漏电流
在 3uA 以下。BRCL4056BSE 的其他特点包括充电电流监控器、欠压闭锁、自动再充电和两个用于指示充
电结束和输入电压接入的状态引脚。
BRCL4056BSE is a complete CC/CV linear charger for single cell lithium-ion batteries,It has the function
of positive and negative electrode protection for battery.Its ESOP-8 package and low external
component count make the BRCL4056BSE ideally suited for portable applications. Furthermore, the
BRCL4056BSE is specifically designed to work within USB power specifications.
No external sense resistor is needed and no blocking diode is required due to the internal P-MOSFET
architecture. Thermal feedback regulates the charge current to limit the die temperature during high
power operation or high ambient temperature .The charge voltage is fixed at 4.2V,and the charge current
can be programmed externally with a single resistor. The BRCL4056BSE automatically terminates the
charge cycle when the charge current drops to 1/10th the programmed value after the final float voltage
is reached.
When the input supply (wall adapter or USB supply) is removed the BRCL4056BSE automatically enters
a low current state dropping the battery drain current to less than 3μA. Other features include charge
current monitor, under-voltage lockout, automatic recharge and two status pins to indicate charge and
charge termination.
特征
/ Features
预设4.20V±1%精度的充电电压
Preset 4.20V charge voltage with ±1% accuracy
最大输入电压：8V
Maximum input voltage is 8V
具有BAT-VIN防倒灌功½
WithBAT-VINanti-backflowfunction
线性充电模式，内½1AMOSFET，涓流/恒流/恒压三段式充电，充电电流外部可调
Linearchargemode,built-in1AMOSFET,Trickle/Constantcurrent/Constantvoltagethree
stagecharging,externallyadjustablechargingchargingcurrent
支持对0V电池充电
Supports0Vbatterycharing
短路保护，电池正负极反接保护
Shortcircuitprotection,batterypolarityreversepolarityprotection
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BRCL4056BSE
Rev.D Feb.-2019
特征
/ Features
智½温控技术，充电电流会随温度升高而降½，130度开始下降，最½可降至0
Intelligenttemperaturecontroltechnology,chargingcurrentwilldecreasewithincreasing
temperature,130℃ begantodecline,thelowestcanbereducedto0
用途
/ Applications
适用于 USB 电源和适配器电源，蓝牙应用及其他便捷式设备。
SuitableforUSBpowerandadapterpower,Bluetoothapplicationsandotherportabledevices.
典型应用电路图
/ Typical Application
½启动限制了浪涌电流
Soft-Startlimitsinrushcurrent
可直接从USB端口给单节锂离子电池充电
ChargessinglecellLi-ionbatteriesDirectlyfromUSBport
自动再充电
Automaticrecharge
4KVESD
无卤产品。
Halogen-free Product.
DATA SHEET
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BRCL4056BSE
Rev.D Feb.-2019
指示灯工½状态表
/ Indicator light working state
充电状态
正在充电/Charging
电池充满/Batteryfull
欠压，电池温度过高，过½等故障状态，或无电
池接入（TEMP½用）
Undervoltage,battery temperature is too
high,tooloworotherfaultconditions,orno
batteryaccess(useTEMP)
BAT端接10μF电容，无电池（TEMP=GND）
BAT terminated with 10uF capacitor,no
battery
闪/Flashinglight
T=1-4s
亮/Light
灭/Lightsoff
灭/Lightsoff
L1（CHRG）
亮/Light
灭/Lightsoff
DATA SHEET
L2 （STDBY）
灭/Lightsoff
亮/Light
引脚排列
/ Pinning
引脚
1
2
3
4
5
6
7
8
名称
TEMP
PROG
GND
VDD
BAT
STDBY
CHRG
NC
描述
外部温度感应引脚/Externaltemperaturesensingpin
充电电流调整端/Chargecurrentregulator
芯片地/Chipground
外部输入直流5V/ExternalinputDC5V
电池输入端/Batteryinput
电池充电完成指示灯/Batterychargecompletionindicator
充电指示灯/Chargingindicator
悬空/Vacant
印章代码
/ Marking
见印章说明。
See Marking Instructions.
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BRCL4056BSE
Rev.D Feb.-2019
电性½参数
/ Electrical Characteristics(
除非特别指定，Ta=25℃)
符号
Symbol
V
DD
V
DD
掉电监测
V
BAT
I
BAT
V
TRKL
V
TRHYS
V
UV
V
UVHYS
V
msd
V
msdHYS
V
prog1
V
prog2
OTR
V
DD
>BAT
V
DD
>BAT
V
DD
=5V
Vcc=3.5V
Vbat=4.2V
V
BAT
从½到高
V
DD
从½到高
V
DD
=5V
测试条件
Test Conditions
最小值
Min
4
4.158
典型值 最大值
Typ
Max
5
100
30
4.20
0.5
2.8
100
3.7
200
1.2
50
0.1
1.0
130
6
4.242
5
单½
Unit
V
mV
mV
V
μA
V
mV
V
mV
V
mV
V
V
℃
DATA SHEET
参数
Parameter
输入电压范围
V
DD
从½到高
V
DD
从高到½
浮充门槛电压
BAT倒灌电流
涓流½恒流
涓流充电迟滞电压
V
DD
欠压闭锁门限
V
DD
欠压闭锁迟滞
手动停机门限电压
手动停机迟滞电压
涓流时PROG电压
大电流时PROG电压
过温恢复
工½原理
/ Description of the Principle
BRCL4056BSE是专门为一节锂离子或锂聚合物电池而设计的线性充电器电路，
利用芯片内部的功率 晶
½管对电池进行恒流和恒压充电。充电电流可以用外部电阻编程设定，最大持续充电电流可达1.2A，
不需要另加阻流二极管和电流检测电阻。BRCL4056BSE包含两个漏极开路输出的状态指示输出端，充电
状态指示端CHRG和电池充满指示输出端STDBY。
芯片内部的功率管理电路在芯片的结温超过 30℃时自动降½充电电流，这个功½可以½用户最大限度
1
的利用芯片的功率处理½力，不用担心芯片过热而损坏芯片或者外部元器件。这样，用户在设计充电电
流时，可以不用考虑最坏情况，而只是根据典型情况进行设计就可以了，因为在最坏情况下，
BRCL4056BSE会自动减小充电电流。
½输入电压大于电源½电压检测阈值和芯片½½输入端接高电平时，BRCL4056BSE开始对电池充电，
CHRG管脚输出½电平，
表示充电正在进行，如果电池电压½于 .8V，充电器用小电流对电池进行预充电。
2
½电池电压超过2.8V ，
时 充电器采用恒流模式对电池充电，充电电流由 ROG管脚和GND之间的电阻
P
RPROG 确定。½电池电压接近 .2V电压时，充电电流逐渐减小，BRCL4056BSE进入恒压充电模式。
4
½充电电流减小到充电结束阈值时，充电周期结束。CHRG输出高阻态，STDBY端输出½电½。充电结
束阈值是恒流充电电流的10%。
½电池电压降到再充电阈值以下时，自动开始新的充电周期。芯片内部的高精度的电压基准源，误差放
大器和电阻分压½络确保电池端调制电压的精度在 1%以内，
满足了锂离子电池和锂聚合物电池的要求。
½输入电压掉电或者输入电压½于电池电压时，充电器进入½功耗的睡眠模式，电池端消耗的电流小于
3uA，从而增加了待机时间。
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BRCL4056BSE
Rev.D Feb.-2019
工½原理
/ Description of the Principle
The BRCL4056BSE is a complete CC/CV linear charger for single cell lithium-ion batteries.
CC/CVtochargerbatterbyinternalMOSFET.Itcandeliverupto1.2Aofchargecurrent.No
blocking diode or external current sense resistors required. BRCL4056BSE include two
Open-DrainchargestatusPins:ChargestatusindicatorCHRGandbatterychargecompletion
statusoutputSTDBY.
The internal thermal regulation circuit reduces the programmed charge current if the die
temperatureattemptstoriseaboveapresetvalueofapproximately130℃.Thisfeatureprotects
the BRCL4056BSE from excessive temperature, and allows the user to push the limits of the
power handling capability of a given circuit the external components. Another benefit of
adopting thermal regulation is that charge current can be set according to typical, not
worst-case,ambienttemperaturesforagivenapplicationwiththeassurancethatthecharger
willautomaticallyreducethecurrentinworst-caseconditions.
ThechargecyclebeginswhenthevoltageattheVCCpinrisesabovetheUVLOlevel,acurrent
setresistorisconnectedfromthePROGpintoground.TheCHRGpinoutputsalogiclowto
indicatethatthechargecycleisongoing.Atthebeginningofthechargecycle,ifthebattery
voltageisbelow2.8V,thechargeisinprechargemodetobringthecellvoltageuptoasafe
levelforcharging.ThechargergoesintothefastchargeCCmodeoncethevoltageontheBAT
pin rises above 2.8V. In CC mode, the charge current is set by RPROG. When the battery
approaches the regulation voltage 4.2V, the charge current begins to decreases the
BRCL4056BSEenterstheCVmode.Whenthecurrentdropstochargeterminationthreshold,
thechargecycleisterminated,andCHRGpinassumesahighimpedancestatetoindicatethat
thechargecycleisterminatedandSTDBYpinispulledlow.Thechargeterminationthresholdis
10%ofthecurrentinCCmode.
Torestartthechargecycle,removetheinputvoltageandreapplyit.Thechargecyclecanalso
be automatically restarted if the BAT pin voltage falls below the recharge threshold. The
on-chipreferencevoltage,erroramplifierandtheresistordividerprovideregulationvoltage
with1%accuracywhichcanmeettherequirementoflithium-ionandlithiumpolymerbatteries.
Whentheinputvoltageisnotpresent,orinputvoltageisbelowVBAT,thechargergoesintoa
sleepmode,droppingbatterydraincurrenttolessthan3μA.Thisgreatlyreducesthecurrent
drainonthebatteryandincreasesthestandbytime.
充电电流的设定
/ Programming Charge Current
充电电流是采用一个连接在PROG引脚与地之间的电阻器来设定的，
设定电阻器和充电电流采用下列
公式来计算。根据需要的充电电流来确定电阻器阻值。
ThechargecurrentisprogrammedusingasingleresistorfromthePROGpintoground.The
programresistorandthechargecurrentarecalculatedusingthefollowingequations.
DATA SHEET
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