DW03D(二合一锂电池保护IC)

精心整理DW01锂电池保护IC一、主要特性静态电流待机电流（检测到过放之后）过充检测精度（Topt=25℃）过充检测精度（Topt=0到50℃）过放检测精度过放检测电压过流保护过充延迟（VDD=4.4V）过放延迟（VDD=2.2V带有内置电容）封装典型值：4.0uA典型值：0.2uA±50mV±60mV±100mV2.0V到3.0V，每步0.005V 0.04V到0.32V，每步0.04V 110mS22mS（最小值）SOT23-6/6-pin二、基本描述DW01是一款单节可充电锂电池保护集成电路，具有过充、过放、过流及短路保护功能。

IC内部包含：三个电压检测电路、一个基准电路、一个延迟电路、一个短路保护电路和一个逻辑电路。

当充电电压逐渐增大超过过充检测电路的阈值VDET1时，Cout Pin的输出电压即过充检测电路的输出电压VD1会变到低电位，也就是充电器负端的电位。

在进入过充保护状态后，当VDD电压降低到VREL1下方或者当电池组脱离充电器而接一个负载，且VDD介于VDET1与VREL1之间时VD1可以复位，即CoutPin输出变为高电位。

当放电电压低于过放检测电路的阈值VDET2时，经过一段固定的延迟时间，Dout Pin的输出即过放检测电路的输出VD2会变为低电位。

这时，若给电池充电，当电池电压上升到过放检测电路的阈值电压之上时，VD2恢复，Dout的输出电压变为高电平。

当有过流情况出现时，内部过流检测电路会检测到，经过一段固定的延迟时间后，VD3和Dout变为低电平，放电回路被切断。

这时，若将电池组从负载系统中分开，VD3会恢复使Dout 变为高电平。

当有外部短路电流时，短路保护电路会立即使Dout变为低电位，当外部短路电流消失后，Dout会转换为高电位。

在检测到过放之后，会通过关闭一些内部电路使电源电流非常低。

IC过充检测电路的延迟时间可以通过连接外部电容进行设置。

dw01原理图DW01原理图。

DW01原理图是指DW01电池保护IC的电路原理图，用于实现对锂电池的保护和管理。

DW01是一种专门设计用于锂离子电池保护的集成电路，它可以监测电池的电压、电流和温度，并在必要时切断电池的输出，以防止电池过充、过放、过流和过温，从而延长电池的使用寿命，并确保电池的安全性能。

DW01原理图主要包括DW01芯片、电池接口、电池连接线、保险丝、电源接口、电源管理芯片等几个主要部分。

通过这些部分的合理连接和布局，可以实现对锂电池的全面保护和管理。

首先，DW01芯片是整个电路的核心部分，它通过监测电池的电压、电流和温度，实时掌握电池的工作状态。

一旦发现电池处于过充、过放、过流或过温状态，DW01芯片会立即切断电池的输出，以保护电池不受损害。

其次，电池接口和电池连接线是用来连接锂电池和DW01芯片的重要部分，它们负责传输电池的电压和电流信息给DW01芯片，并接收DW01芯片的保护指令，以实现电池保护和管理的功能。

另外，保险丝是用来保护电路的重要部分，一旦电路中出现过流情况，保险丝会立即熔断，切断电路，保护电路不受损害。

此外，电源接口和电源管理芯片是用来为DW01芯片提供工作电压和管理电源的重要部分，它们负责为DW01芯片提供稳定的工作电压和电源管理功能，以确保DW01芯片能够正常工作。

综上所述，DW01原理图是一种用于锂电池保护和管理的电路原理图，通过合理连接和布局DW01芯片、电池接口、电池连接线、保险丝、电源接口和电源管理芯片等部分，可以实现对锂电池的全面保护和管理，延长电池的使用寿命，并确保电池的安全性能。

DW01原理图的设计和应用，对于锂电池的保护和管理具有重要的意义，可以广泛应用于各种类型的锂电池产品中。

DW01D(文件编号：S&CIC0701) 锂电池保护电路一、描述DW01D是一个锂电池保护电路，为避免锂电池因过充电、过放电、电流过大导致电池寿命缩短或电池被损坏而设计的。

它具有高精确度的电压检测与时间延迟电路。

二、主要特点工作电流低；过充检测4.3V，过充释放4.05V；过放检测2.4V，过放释放3.0V；过流检测0.15V，短路电流检测1.0V；充电器检测；过电流保护复位电阻；工作电压范围广；小封装。

三、应用单一锂电池保护电路。

四、内部框图DW01D(文件编号：S&CIC0701) 锂电池保护电路五、极限参数六、电气特性参数（除非特别指定，Tamb=25℃）DW01D(文件编号：S&CIC0701) 锂电池保护电路七、管脚排列图八、功能描述正常条件如果VODL>VDD>VOCU，并且VCH<VCSI<VOI1，那么M1和M2都开启（见典型应用电路图）。

此时充电和放电均可以正常进行。

过充电状态当从正常状态进入充电状态时，可以通过VDD检测到电池电压。

当电池电压进入到这充电状态时，VDD 电压大于VOCU，迟延时间超过TOC，M2关闭。

释放过充电状态进入过记电状态后，要解除过记电状态，进入正常状态，有两种方法。

●如果电池自我放电，并且VDD<VOCR，M2开启，返回到正常状态。

●在移去充电器，连接负载后，如果VOCR<VDD<VOCU，VCSI>VOI1，M2开启，返回到正常模式。

过放电检测当由正常状态进入放电状态时，可以通过VDD检测到电池电压。

当电池电压进入过放电状态时，VDD电压小于VODL，迟延时间超过TOD，则M1关闭。

此时CSI管脚通过内部电阻RCSID拉到VDD。

如果VCSI>VOI2，则电路进入断电模式（电流小于0.3uA）。

释放断电模式当电池在断电模式时，若连接入一个充电器，并且此时VCH<VCSI<VOI2，VDD<VODR，M1仍旧关闭，但是释放断电模式。

一、主要特性静态电流待机电流（检测到过放之后）过充检测精度（Topt=25℃）过充检测精度（Topt=0 到50℃）过放检测精度过放检测电压过流保护过充延迟（VDD=4.4V）过放延迟（VDD=2.2V 带有内置电容）封装典型值：4.0uA典型值：0.2uA±50mV±60mV±100mV2.0V 到3.0V，每步0.005V 0.04V 到0.32V，每步0.04V 110mS22mS（最小值）SOT23-6/6-pin二、基本描述DW01 是一款单节可充电锂电池保护集成电路，具有过充、过放、过流及短路保护功能。

IC 内部包含：三个电压检测电路、一个基准电路、一个延迟电路、一个短路保护电路和一个逻辑电路。

当充电电压逐渐增大超过过充检测电路的阈值VDET1 时，Cout Pin 的输出电压即过充检测电路的输出电压VD1 会变到低电位，也就是充电器负端的电位。

在进入过充保护状态后，当VDD 电压降低到VREL1 下方或者当电池组脱离充电器而接一个负载，且VDD 介于VDET1 与VREL1 之间时VD1 可以复位，即Cout Pin 输出变为高电位。

当放电电压低于过放检测电路的阈值VDET2 时，经过一段固定的延迟时间，Dout Pin 的输出即过放检测电路的输出VD2 会变为低电位。

这时，若给电池充电，当电池电压上升到过放检测电路的阈值电压之上时，VD2 恢复，Dout 的输出电压变为高电平。

当有过流情况出现时，内部过流检测电路会检测到，经过一段固定的延迟时间后，VD3 和Dout 变为低电平，放电回路被切断。

这时，若将电池组从负载系统中分开，VD3 会恢复使Dout 变为高电平。

当有外部短路电流时，短路保护电路会立即使Dout变为低电位，当外部短路电流消失后，Dout 会转换为高电位。

在检测到过放之后，会通过关闭一些内部电路使电源电流非常低。

IC 过充检测电路的延迟时间可以通过连接外部电容进行设置。

DW01锂电池保护板工作原理锂电池保护板根据使用IC,电压等不同而电路及参数有所不同,下面以DW01 配MOS管8205A进行讲解:锂电池保护板其正常工作过程为:当电芯电压在2.5V至4.3V之间时，DW01 的第1脚、第3脚均输出高电平(等于供电电压)，第二脚电压为0V。

此时DW01 的第1脚、第3脚电压将分别加到8205A的第5、4脚，8205A内的两个电子开关因其G极接到来自DW01 的电压，故均处于导通状态，即两个电子开关均处于开状态。

此时电芯的负极与保护板的P-端相当于直接连通，保护板有电压输出。

2.保护板过放电保护控制原理:当电芯通过外接的负载进行放电时,电芯的电压将慢慢降低,同时DW01 内部将通过R1电阻实时监测电芯电压,当电芯电压下降到约2.3V时DW01 将认为电芯电压已处于过放电电压状态，便立即断开第1脚的输出电压，使第1脚电压变为0V，8205A内的开关管因第5脚无电压而关闭。

此时电芯的B-与保护板的P-之间处于断开状态。

即电芯的放电回路被切断，电芯将停止放电。

保护板处于过放电状态并一直保持。

等到保护板的P 与P-间接上充电电压后，DW01 经B-检测到充电电压后便立即停止过放电状态，重新在第1脚输出高电压，使8205A内的过放电控制管导通，即电芯的B-与保护板的P-又重新接上，电芯经充电器直接充电。

4.保护板过充电保护控制原理:当电池通过充电器正常充电时,随着充电时间的增加,电芯的电压将越来越高，当电芯电压升高到4.4V时,DW01 将认为电芯电压已处于过充电电压状态，便立即断开第3脚的输出电压，使第3脚电压变为0V，8205A内的开关管因第4脚无电压而关闭。

此时电芯的B-与保护板的P-之间处于断开状态。

即电芯的充电回路被切断，电芯将停止充电。

保护板处于过充电状态并一直保持。

等到保护板的P 与P-间接上放电负载后，因此时虽然过充电控制开关管关闭,但其内部的二极管正方向与放电回路的方向相同,故放电回路可以进行放电,当电芯的电压被放到低于 4.3V时,DW01 停止过充电保护状态重新在第3脚输出高电压，使8205A内的过充电控制管导通，即电芯的B-与保护板P-又重新接上，电芯又能进行正常的充放电.5.保护板短路保护控制原理:如图所示，在保护板对外放电的过程中，8205A内的两个电子开关并不完全等效于两个机械开关，而是等效于两个电阻很小的电阻，并称为8205A的导通内阻，每个开关的导通内阻约为30m\U 03a9共约为60m\U 03a9，加在G极上的电压实际上是直接控制每个开关管的导通电阻的大小当G极电压大于1V时，开关管的导通内阻很小(几十毫欧)，相当于开关闭合，当G极电压小于0.7V以下时，开关管的导通内阻很大(几MΩ)，相当于开关断开。

DWA锂电池保护板工作原理及过放过充短路保护解析精
修订
DWA锂电池保护板的工作原理主要通过对电池的电压和电流进行监测来判断电池的工作状态，根据监测结果做出相应的处理。

当电池的电压过低时，保护板会切断电池的输出，防止电池继续放电导致电池损坏；当电池的电压过高时，保护板会切断电池的充电，防止电池过充造成危险；当电池出现短路时，保护板会立即切断电路，避免电池发生过热和燃烧。

具体来说，DWA锂电池保护板内部集成了多个保护电路和传感器。

保护电路通过对电池电压进行采样，将采样结果与设定的过放和过充阈值进行比较，一旦电压超过设定的阈值，保护电路就会触发，切断电池的输出或充电。

此外，保护电路还可以通过对电池电流进行监测，一旦电流超过设定的安全范围，也会触发保护电路切断电池的输出或充电。

其中，过放保护电路主要用于保护电池不过度放电，过充保护电路用于保护电池不过度充电，而充电保护电路用于监测充电过程中的异常情况，并在必要时停止充电。

此外，DWA锂电池保护板还集成了温度传感器，用于监测电池的温度变化。

一旦电池温度过高，保护板会切断电池的输出或充电，以防止电池发生过热。

过高的温度可能会导致电池水分蒸发、金属氧化，进而影响电池的性能和寿命，甚至引发火灾等危险。

综上所述，DWA锂电池保护板主要通过监测电池的电压、电流和温度变化来判断电池的工作状态，并在发现过放、过充和短路等异常情况时采取措施，切断电池的输出或充电，以保护电池的安全和寿命。

通过合理使用和安装DWA锂电池保护板，可以有效防止锂电池发生损坏、过热、燃烧和爆炸等危险。

DW02S______________________________________ ________________________________________________________________ One Cell Lithium-ion/Polymer Battery Protection ICGENERAL DESCRIPTIONThe DW02S series product is a high integration solution for lithium-ion/polymer battery protection.DW02S contains advanced power MOSFET, high-accuracy voltage detection circuits and delay circuits. DW02S is put into an ultra-small SOT23-3 package and only oneexternal component makes it an ideal solution in limited space of battery pack. DW02S has all the protection functions required in the battery application including overcharging, overdischarging, overcurrent and load short circuiting protection etc. The accurate overcharging detection voltage ensures safe and full utilization charging. The low standby current drains little current from the cell while in storage.The device is not only targeted for digital cellular phones, but also for any other Li-Ion and Li-Poly battery-powered information appliances requiring long-term battery life.FEATURES· Protection of Charger Reverse Connection· Protection of Battery Cell Reverse Connection· Integrate Advanced Power MOSFET with Equivalent of 56m R SS(ON) · Ultra-small SOT23-3 Package · Only One External Capacitor Required· Over-temperature Protection · Overcharge Current Protection · Two-step Overcurrent Detection: -Overdischarge Current -Load Short Circuiting· Charger Detection Function · 0V Battery Charging Function- Delay Times are generated inside · High-accuracy Voltage Detection · Low Current Consumption- Operation Mode: 2.8μA typ. - Power-down Mode: 1.5μA typ. · RoHS Compliant and Lead (Pb) FreeAPPLICATIONSOne-Cell Lithium-ion Battery Pack Lithium-Polymer Battery PackFigure 1. Typical Application CircuitDW02S________ ____________________________________________________ ______ORDERING INFORMATIONPART NUMBER Pack age Overcharg e Detection Voltage [V CU ] (V) Overcharge ReleaseVoltage [V CL ] (V) Overdischarge Detection Voltage [V DL ] (V) Overdischarge Release Voltage [V DR ] (V) OvercurrentDetection Current[I OV1] (A) Top MarkDW0WSSOT23-34.304.102.403.03.03AYW (note)Note: “YW ” is manufacture date code, “Y ” means the year, “W ” means the weekPIN CONFIGURATIONFigure 2. PIN ConfigurationPIN DESCRIPTIONPIN NAME PIN DESCRIPTIONVDD Power SupplyGNDGround, connect the negative terminal of the battery to this pin VMThe negative terminal of the battery pack. The internal FET switchconnects this terminal to GNDABSOLUTE MAXIMUM RATINGS(Note: Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods may affect device reliability.)PARAMETERVALUEUNITVDD input pin voltage -0.3 to 6 V VM input pin voltage-6 to 10 V Operating Ambient Temperature -40 to 85 °C Maximum Junction Temperature 125 °C Storage Temperature-55 to 150°CDW02S_________ELECTRICAL CHARACTERISTICSTypicals and limits appearing in normal type apply for T A= 25o C, unless otherwise specified Parameter Symbol Test Condition Min Typ Max Unit Detection VoltageOvercharge Detection Voltage V CU4.25 4.30 4.35VOvercharge Release Voltage V CL 4.05 4.10 4.15VOverdischarge Detection Voltage V DL 2.3 2.4 2.5VOverdischarge Release Voltage V DR 2.9 3.0 3.1VCharger Detection Voltage V CHA-0.07-0.12 -0.2V Detection CurrentOverdischarge Current1 Detection I IOV1V DD=3.5V3A Load Short-CircuitingDetectionI SHORT V DD=3.5V20A Current ConsumptionCurrent Consumption in Normal Operation I OPE V DD=3.5VVM =0V2.8 6 μACurrent Consumption in power Down I PDN V DD=2.0VVM pin floating1.5 3 μAVM Internal ResistanceInternal Resistance between VM and V DD R VMD V DD=3.5VVM=1.0V320kInternal Resistance between VM and GND R VMS V DD=2.0VVM=1.0V100kFET on ResistanceEquivalent FET on Resistance R SS(ON)V DD=3.6V I VM =1.0A56m Over Temperature ProtectionOver T emperature Protection T SHD+120o C Over T emperature Recovery Degree T SHD-100DW02S_________________________Figure 3. Functional Block Diagram FUNCTIONAL DESCRIPTIONThe DW02S monitors the voltage and current of a battery and protects it from being damaged due to overcharge voltage, overdischarge voltage, overdischarge current, and short circuit conditions by disconnecting the battery from the load or charger. These functions are required in order to operate the battery cell within specified limits.The device requires only one external capacitor. The MOSFET is integrated andits R SS(ON) is as low as56m typical. Normal operating modeIf no exception condition is detected, charging and discharging can be carried out freely. This condition is called the normal operating mode.Overcharge ConditionWhen the battery voltage becomes higher than the overcharge detection voltage (V CU) during charging under normal condition and the state continues for the overcharge detection delay time (t CU) or longer, theDW02S turns the charging control FET off to stop charging. This condition is called the overcharge condition. The overcharge condition is released in the following two cases:1, When the battery voltage drops below the overcharge release voltage (V CL), the DW02S turns the charging control FET on and returns to the normal condition. 2, When a load is connected and discharging starts, the DW02S turns the charging control FET on and returns to the normal condition. The release mechanism is as follows: the discharging current flows through an internal parasitic diode of the charging FET immediately after a load is connected and discharging starts, and the VM pin voltage increases about 0.7 V (forward voltage of the diode) from the GND pin voltage momentarily. TheDW02S detects this voltage and releases the overcharge condition. Consequently, in the case that the battery voltage is equal to or lower than the overcharge detection voltage (V CU), the DW02S returns to the normal condition immediately, but in the case the battery voltage is higher than the overcharge detection voltage (V CU),the chip does not return to the normal condition until the battery voltage drops below the overcharge detection voltage (V CU) even if the load is connected. In addition, if the VM pin voltage is equal to or lower than the overcurrent 1 detection voltage when a load is connected and discharging starts, the chip does not return to the normal condition.Remark If the battery is charged to a voltage higher than the overcharge detection voltage (V CU) and the battery voltage does not drops below the overcharge detection voltage (V CU) even when a heavy load, which causes an overcurrent, is connected, the overcurrent 1 and overcurrent 2 do not work until the battery voltage drops below the overcharge detection voltage (V CU). Since an actual battery has, however, an internal impedance of several dozens of mΩ, and the battery voltage drops immediately after a heavy load which causes an overcurrent is connected, the overcurrent 1 and overcurrent 2 work. Detection of load short-circuiting works regardless of the battery voltage.Overdischarge ConditionWhen the battery voltage drops below the overdischarge detection voltage (V DL) during discharging under normal condition and it continues for the overdischarge detection delay time (t DL) or longer, theDW02S turns the discharging control FET off and stops discharging. This condition is called overdischarge condition. After the discharging control FET is turned off, the VM pin is pulled up by the R VMD resistorbetween VM and VDD in DW02S. Meanwhile when VM is bigger than 1.5V (typ.) (the load short-circuiting detection voltage), the current of the chip is reduced to the power-down current (I PDN). This condition is called power-down condition. The VM and VDD pins are shorted by theR VMD resistor in the IC under the overdischarge and power-down conditions. The power-down condition is released when a charger is connected and the potential difference between VM and VDD becomes 1.3 V (typ.) or higher (load short-circuiting detection voltage). At this time, the FET is still off. When the battery voltage becomes the overdischarge detection voltage (V DL) or higher (see note), the DW02S turns the FET on and changes to the normal condition from the overdischarge condition.Remark If the VM pin voltage is no less than the charger detection voltage (V CHA), when the battery under overdischarge condition is connected to a charger, the overdischarge condition is released (the discharging control FET is turned on) as usual, provided that the battery voltage reaches the overdischarge release voltage (V DU) or higher.Overcurrent ConditionWhen the discharging current becomes equal to or higher than a specified value (the VM pin voltage is equal to or higher than the overcurrent detection voltage) during discharging under normal condition and the state continues for the overcurrent detection delay time or longer, theDW02S turns off the discharging control FET to stop discharging. This condition is called overcurrent condition. (The overcurrentincludes overcurrent, or load short-circuiting.)The VM and GND pins are shorted internally by the R VMS resistor under the overcurrent condition. When a load is connected, the VM pin voltage equals the VDD voltage due to the load.The overcurrent condition returns to the normal condition when the load is released and the impedance between the B+ and B- pins becomes higher than the automatic recoverable impedance. When the load is removed, the VM pin goes back to the GND potential since the VM pin is shorted the GND pin with the R VMS resistor. Detecting that the VM pin potential is lower than the overcurrent detection voltage(V IOV1), the IC returns to the normal condition.Abnormal Charge Current DetectionIf the VM pin voltage drops below the charger detection voltage (V CHA) during charging under the normal condition and it continues for the overcharge detection delay time (t CU) or longer, the DW02S turns the charging control FET off and stops charging. This action is called abnormal charge current detection. Abnormal charge current detection works when the discharging control FET is on and the VM pin voltage drops below the charger detection voltage (V CHA). When an abnormal charge current flows into a battery in the overdischarge condition, the DW02S consequently turns the charging control FET off and stops charging afterthe battery voltage becomes the overdischarge detection voltage and the overcharge detection delay time (t CU) elapses.Abnormal charge current detection is released when the voltage difference between VM pin and GND pin becomes lower than the charger detection voltage (V CHA) by separating the charger. Since the 0 V battery charging function has higher priority than the abnormal charge current detection function, abnormal charge current may not be detected by the product with the 0 V battery charging function while the battery voltage is low.Load Short-circuiting conditionIf voltage of VM pin is equal or below short circuiting protection voltage (V SHORT), the DW02S will stop discharging and battery is disconnected from load. The maximum delay time to switch current off is t SHORT. This status is released when voltage of VM pin is higher than short protection voltage (V SHORT), such as when disconnecting the load.Delay CircuitsThe detection delay time for overdischarge current 2 and load short-circuiting starts when overdischarge current 1 is detected. As soon as overdischarge current 2 or load short-circuiting is detected over detection delay time for overdischarge current 2 or load short- circuiting, the DW02S stops discharging. When battery voltage falls below overdischarge detection voltage due to overdischarge current, the DW02S stop discharging by overdischarge current detection. In this case the recovery of batteryvoltage is so slow that if battery voltage after overdischarge voltage detection delay time is still lower than overdischarge detection voltage, the DW02S shifts to power-down.Figure 4. Overcurrent delay time0V Battery Charging Function (1) (2) (3) This function enables the charging of a connected battery whose voltage is 0 V by self-discharge. When a charger having 0 V battery start charging charger voltage(V0CHA) or higher is connected between B+ and B- pins, the charging control FET gate is fixed to VDD potential. When the voltage between the gate and the source of the charging control FET becomes equal to or higher than the turn-on voltage by the charger voltage, the charging control FET is turned on to start charging. At this time, the discharging control FET is off and the charging current flows through the internal parasitic diode in the discharging control FET. If the battery voltage becomes equal to or higher than the overdischarge release voltage (V DU), the normal condition returns. Note(1) Some battery providers do not recommend charging of completely discharged batteries. Please refer to battery providers before the selection of 0 V battery charging function.(2) The 0V battery charging function has higher priority than the abnormal charge current detection function. Consequently, a product with the 0 V battery charging function charges a battery and abnormal charge current cannot be detected during the battery voltage is low (at most 1.8 V or lower).(3) When a battery is connected to the IC for the first time, the IC may not enter the normal condition in which discharging is possible. In this case, set the VM pin voltage equal to the GND voltage (short the VM and GND pins or connect a charger) to enter the normal condition.TIMING CHART1．Overcharge and overdischarge detectionV V CU -V V DL +V V DL ONONCHARGEV DDV ov1V SS V VMFigure5-1 Overcharge and Overdischarge Voltage Detection2．Overdischarge current detectionV CU V CU -V HC V DL +V DH V DLONDISCHARGEOFFV DDV V ov2V ov1V SSFigure5-2 Overdischarge Current DetectionRemark: (1) Normal condition (2) Overcharge voltage condition (3) Overdischarge voltage condition (4)Overcurrent condition3． Charger DetectionV V CU -V V DL +V V DLONV DD V SS V VMFigure5-3 Charger Detection4． Abnormal Charger DetectionV V CU -V V DL +V V DLONONCHARGEV DDV SS V VMFigure5-4 Abnormal Charger DetectionRemark: (1) Normal condition (2) Overcharge voltage condition (3) Overdischarge voltage condition (4)Overcurrent conditionTYPICAL APPLICATIONAs shown in Figure 6, the bold line is the high density current path which must be kept asshort as possible. For thermal management, ensure that these trace widths are adequate. C1is a decoupling capacitor which should be placed as close as possible to DW02S.Fig 6 DW02S in a Typical Battery Protection CircuitPrecautions• Pay attention to the operating c onditions fo r input/output voltage and load current so that the power loss in DW02S does not exceed the power dissipation of the package.• Do not apply a n el ectrostatic discharge to this DW02S that exceeds the performance ratings of the built-in electrostatic protection circuit.PACKAGE OUTLINE SOT23-3DISCLAIMERThe information described herein is subject to change without notice.Chip Tiger Inc. is not responsible for any problems caused by circuits or diagrams described herein whose ralated industial properties,patents,or other rights belong to third parties. The application circuit examples explain typical applications of the products, and do not guarantee the success of any specific mass-production design.When the products described herein are regulated products subject to the Wassenaar Arrangement or other arrangements, they may not be exported without authorization from the appropriate governmental authority.Use of the information described herein for other purposes and/or reproduction or copying without express permission of Chip Tiger Inc. is strictly prohibited.The products described herein cannot be used as part of any device or equipment affecting the human body,such as exercise equipment ,medical equipment, security systems, gas equipment,or any aparatus installed in airplanes and other vehicles,without prior written pemission of Xysemi Inc.Although Chip Tiger Inc. exerts the greatest possible effort to ensure high quality and reliability, the failure or malfunction of semiconductor may occur. The use of these products should therefore give thorough consideration to safty design,including redundancy, fire-prevention measure and malfunction prevention, to prevent any accidents,fires,or community damage that may ensue.。

概述DW03是一款高精度的单节可充电锂电池保护芯片，芯片内部集成了功率管以及高精度的过电压充电、过电压放电、过电流充电和过电流放电等保护电路。

同时，DW03具有短路保护、过温保护、充电器检测和0V电池充电允许等功能。

正常工作状态下，DW03的VDD 脚电压保持在过电压充电保护阈值和过电压放电保护阈值之间，同时DW03的充/放电流在过电流充电保护阈值和过电流放电保护阈值之间，此时DW03内置的功率管导通，既可以使用充电器对电池充电，也可以通过负载对电池放电。

当充/放电保护条件发生时，并持续相应的延时后，DW03内置的功率管开始关闭，此时充/放电过程停止。

DW03对每种保护状态都有相应的恢复条件，当恢复条件满足，并持续相应的延时后，DW03内置的功率管再次导通，芯片重新进入正常工作状态。

DW03采用体积超小的SOT23-3L封装，外围应用电路精简，只需要一个电容和一个电阻。

这非常适合对空间限制要求非常严格的可充电锂电池组的应用。

特点∙集成功率管：R ON=55mΩ∙过电压充电/放电保护∙过电流放电保护∙异常充电/过电流充电保护∙0V电池充电允许∙充电器检测功能∙延时时间内部设定∙负载短路保护∙充电器反接保护∙过温保护∙超低静态电流：工作状态：典型值2.5uA低功耗状态：典型值1.5uA ∙极少的外围元器件∙采用SOT23-3L封装应用∙单节锂离子电池组∙单节锂聚合物电池组典型应用电路管脚SOT23-3L管脚描述极限参数（注1）注1: 最大极限值是指超出该工作范围芯片可能会损坏。

推荐工作范围是指在该范围内芯片工作正常，但不完全保证满足个别性能指标。

电气参数定义了器件在工作范围内并且在保证特定性能指标的测试条件下的直流和交流电气参数规范。

对于未给定的上下限参数，该规范不予保证其精度，但其典型值合理反映了器件性能。

注2：环境温度升高最大功耗会减小，这是由T JMAX，ѲJA和环境温度T A所决定的。

最大允许功耗为P DMAX=(T JMAX-T A)/ ѲJA或是极限参数范围给出的数值中比较低的那个值。

DS7066二合一锂电池保护IC,大电流
DS7066 系列电路是一款高精度的单节可充电锂
电池的内置MOSFET 保护电路.
DS7066集成了DW01和MOS管，可单个芯片解决锂电池保护电路。

特点
1:单节锂离子或锂聚合物电池的理想保护电路
2:内置低导通电阻N-MOSFET
3:高精度的保护电压(过充/过放)检测
4:高精度过电流(过充/过放)保护检测
5:电池短路保护
6:可选择多种型号的检测电压和延迟时间
7:可选择不同型号0V-电池充电允许/禁止
8:带有自动恢复功能的低功耗模式
9:极少的外围元器件
10:小型化带散热片的SOP8-E 封装
11:MOSFET: RSS (ON) <21mΩ (VGS=3.8V , ID=5A)。

DW06D 二合一锂电池保护IC一、 概述DW06D 产品是单节锂离子/锂聚合物可充电电池组保护的高集成度解决方案。

DW06D 包括了先进的功率MOSFET ，高精度的电压检测电路和延时电路。

DW06D 具有非常小的SOT23-6的封装,这使得该器件非常适合应用于空间限制得非常小的可充电电池组应用。

DW06D 具有过充，过放，过流，短路等所有的电池所需保护功能，并且工作时功耗非常低。

该芯片不仅仅是为手机而设计，也适用于一切需要锂离子或锂聚合物可充电电池长时间供电的各种信息产品的应用场合。

二、 特点内部集成等效50mΩ左右的先进的功率MOSFET ； 过充电流保护；3段过流保护：过放电流1、过放电流2（可选）、负载短路电流； 充电器检测功能；延时时间内部设定； 高精度电压检测；低静态耗电流：正常工作电流3.8uA 兼容ROHS 和无铅标准。

采用SOT23-6封装形式塑封。

三、 应用单芯锂离子电池组；锂聚合物电池组。

四、 订货信息型号封装过充检测电压 [V CU ]（V ） 过充解除电压 [V CL ]（V ） 过放检测电压 [V DL ]（V ） 过放解除电压 [V DR ]（V ） 过流检测电流[I OV1]（A ）打印标记DW06D SOT23-6 4.34.12.43.02.5DW06D五、 引脚图及说明DW06D二合一锂电池保护IC六、极限参数参数符号参数范围单位电源电压VDD VSS-0.3~VSS+12 V CSI输入管脚电压VCSI VDD+15~VDD+0.3 V 工作温度Topr -40~+85 ℃存储温度Tstg -40~+125 ℃七、电气特性参数参数符号测试条件最小值典型值最大值单位工作电压工作电压VDD -- 1.5 -- 10 V 电流消耗工作电流IDD VDD=3.9V -- 3.0 6.0 uA 检测电压过充电检测电压VOCD -- 4.25 4.30 4.35 V 过充电释放电压VOCR -- 4.05 4.10 4.15 V 过放电检测电压VODL -- 2.30 2.40 2.50 V 过放电释放电压VODR -- 2.90 3.00 3.10 V 过电流1检测电压VOI1 -- 0.12 0.15 0.18 V 过电流2（短路电流）检测电压VOI2 VDD=3.6V 0.80 1.00 1.20 V 过电流复位电阻Rshort VDD=3.6V 50 100 150 KΩ过电器检测电压VCH -- -0.8 -0.5 -0.2 V 迟延时间过充电检测迟延时间TOC VDD=3.6V~4.4V -- 110 200 ms 过放电检测迟延时间TOD VDD=3.6V~2.0V -- 80 140 ms 过电流1检测迟延时间TOI1 VDD=3.6V 5 13 20 ms 过电流2（短路电流）检测迟延时间TOI2 VDD=3.6V -- 5 50 us 其他单个MOS管漏极到源极的导通阻抗R DS(on) V GS = 2.5V, I D = 3.3A -- 22.0 30.0 mΩR DS(on) V GS = 4.5V, I D = 8.2A -- 16.0 20.0八、功能描述DW06D监控电池的电压和电流，并通过断开充电器或负载，保护单节可充电锂电池不会因为过充电压，过放电压，过放电流以及短路等情况而损坏。

DW03D(文件编号：S&CIC0953)二合一锂电池保护IC一、 概述DW03D产品是单节锂离子/锂聚合物可充电电池组保护的高集成度解决方案。

DW03D包括了先进的功率MOSFET，高精度的电压检测电路和延时电路。

DW03D具有非常小的TSS08-8的封装,这使得该器件非常适合应用于空间限制得非常小的可充电电池组应用。

DW03D具有过充，过放，过流，短路等所有的电池所需保护功能，并且工作时功耗非常低。

该芯片不仅仅是为手机而设计，也适用于一切需要锂离子或锂聚合物可充电电池长时间供电的各种信息产品的应用场合。

二、 特点¾内部集成等效45mΩ-60mΩ的先进的功率MOSFET；¾过充电流保护；¾3段过流保护：过放电流1、过放电流2（可选）、负载短路电流；¾充电器检测功能；¾延时时间内部设定；¾高精度电压检测；¾低静态耗电流：正常工作电流3.8uA ¾兼容ROHS和无铅标准。

¾采用TSSOP-8封装形式塑封。

三、 应用¾单芯锂离子电池组；¾锂聚合物电池组。

四、 订货信息型号封装过充检测电压[V CU]（V）过充解除电压[V CL]（V）过放检测电压[V DL]（V）过放解除电压[V DR]（V）过流检测电流[I OV1]（A）打印标记DW03DTSSOP-84.3 4.1 2.4 3.0 2.5DW03D 五、 管脚外形及描述DW03D (文件编号：S&CIC0953) 二合一锂电池保护IC六、 极限参数参数符号参数范围单位电源电压 VDD VSS-0.3~VSS+12 VOC 输出管脚电压 VOC VDD-15~VDD+0.3 VOD 输出管脚电压 VOD VSS-0.3~VDD+0.3 VCSI 输入管脚电压 VCSI VDD+15~VDD+0.3 V工作温度 Topr -40~+85 ℃ 存储温度 Tstg -40~+125 ℃七、 电气特性参数参数符号测试条件最小值典型值最大值单位工作电压 工作电压 VDD -- 1.5 -- 10 V电流消耗 工作电流 IDD VDD = 3.9V -- 4.0 6.0 uA检测电压过充电检测电压 VOCD -- 4.25 4.30 4.35 V过充电释放电压 VOCR -- 4.05 4.10 4.15 V过放电检测电压 VODL -- 2.30 2.40 2.50 V过放电释放电压 VODR -- 2.90 3.00 3.10 V 过电流1检测电压 VOI1 -- 0.12 0.15 0.18 V过电流2（短路电流）检测电压 VOI2 VDD = 3.6V 0.80 1.00 1.20 V过电流复位电阻 Rshort VDD = 3.6V 50 100 150 K Ω 过电器检测电压 VCH -- -0.8 -0.5 -0.2 V迟延时间过充电检测迟延时间 TOC VDD = 3.6V~4.4V -- 80 200 ms过放电检测迟延时间 TOD VDD = 3.6V~2.0V -- 40 120 ms 过电流1检测迟延时间 TOI1 VDD = 3.6V 5 13 20 ms过电流2（短路电流）检测迟延时间 TOI2 VDD = 3.6V--550 us其他OC 管脚输出高电平电压 V oh1 -- VDD-0.1VDD-0.02 -- VOC 管脚输出低电平电压 V ol1 -- -- 0.01 0.1 VOD 管脚输出高电平电压 V oh2 -- VDD-0.1VDD-0.02 -- V OD 管脚输出低电平电压 V ol2 -- -- 0.01 0.1R DS (on) V GS = 2.5V , I D = 3.3A -- 22.0 30.0 单个MOS 管漏极到源极的导通阻抗 R DS (on) V GS = 4.5V , I D = 8.2A--16.020.0m ΩMOSFET已内置，等效电阻典型值为50mΩ正常工作模式如果没有检测到任何异常情况，充电和放电过程都将自由转换。