用途 / Purpose: 用于锂离子 / 锂聚合物可充电电池组 For lithium ion / lithium polymer rechargeable battery pack 特点 / Features: (1) 高电压检测电路 / Precision voltage detection circuit 过充检测电压 Overcharge detection voltage 4.3 过充恢复电压 Overcharge release voltage 4.1 过放检测电压 Overdischarge detection voltage 2.4 过放恢复电压 Overdischarge release voltage 3.0 过放电流检测电压 Discharge overcurrent detection voltage 0.14 负载短路检测电压 Load short-circuiting detection volta 1.2 (2) 芯片内建检测延迟电路 / On-chip detection delay circuit 过充电检测延迟时间 Overcharge detection delay time 过放电检测延迟时间 Overdischarge detection delay time 过放电流检测延迟时间 Discharge overcurrent detection delay time 负载短路检测延迟时间 Load short-circuiting detection delay time (3) 耐高压充电器保护最大额定电压 (M 与 CO 管脚额定电压为 28) ±50 m ±50 m ±100 m ±100 m ±30 m ±300 m 100ms 100ms 10ms 50μs High voltage tolerance is used for charger connection pins, M and CO pins are absolute maximum rating=28) (4) 0 可充, 自恢复功能 0 battery charge function available,unavailable are selectable. (5) 工作温度范围 / Operating Temperature Range -40 to +85 (6) 低自耗电流 / Low self current consumption 正常工作模式 / Operation mode / 2.4μA 最大值 /Max 6.0μA (25 ) 待机模式 / Standby Mode 休眠功能 / Green-mode 最大值 /Max 0.1μA (25 ) 自恢复功能 / Self-recovery function 最大值 /Max 3.0μA (25 )
极限参数 /Absolute maximum ratings(ta=25 ) 特性 Item 符号 Symbol 数值 Rating 单位 Unit 工作电压 Supply voltage M 引脚输入电压 M pin Input voltage CO 引脚输出电压 OC output pin voltage DO 引脚输出电压 OD output pin voltage 工作温度 Operating Temperature 储存温度 Storage Temperature DD M CO DO ss-0.3 to ss-12 DD -28 to DD +0.3 DD -28 to DD +0.3 DD -0.3 to DD +0.3 T opr -40 to +85 T stg -55 to +125 电性能参数 /Electrical Characteristics(Ta=25 ) 特性 Item 符号 Symbol 测试条件 Test Conditions 最小值 Min 最大值 Max 单位 Unit DD & SS 间工作电压 Operating voltage between DD & SS CO & M 工作电压 Operating voltage between CO & M 0 可充工作电压 Minimum operating voltage for 0 charging 过放电流恢复电阻 Discharging overcurrent release resistance DD 1.5 9 C O 1.5 28 st R short DD - M DD - SS =0 DD =3.6 M =1.0 1.2 30 50 100 KΩ CO pin Nch ON voltage COL 0.4 0.5 CO pin Nch ON voltage COH DD -0.1 DD -0.02 CO pin Nch ON voltage DOL 0.2 0.5 CO pin Nch ON voltage DOH DD -0.1 DD -0.02 工作电流 Current consumption I DD DD =3.5 M =0 1.2 2.4 6.0 μa 待机电流 ( 休眠功能 ) Current consumption at stand-by(green) I st1 DD =2.0 M =2.0 0.1 μa
特性 Item 过放待机电流 ( 自恢复功能 ) Overdischarge current consumption(self-recovery) 过充检测电压 Overcharge detection voltage 过充恢复电压 Overcharge release voltage 过充恢复迟滞电压 Overcharge hysteresis voltage 过放检测电压 Overdischarge detection voltage 过放恢复电压 1Overdischarge release voltage 过放恢复电压 2 Overdischarge release voltage2 符号 Symbol 测试条件 Test Conditions 最小值 Min 最大值 Max 单位 Unit I DOX DD =2.0, M =2.0 1.8 3.0 μa det1 R1=100Ω 4.25 4.3 4.35 rel1 R1=100Ω 4.05 4.1 4.15 hys1 R1=100Ω hys1 = det1 - rel1 0.2 det2 M =0,R1=100Ω 2.3 2.4 2.5 rel2 R1=100Ω 2.9 3.0 3.1 rel2 ' R1=100Ω,R2=1.0k, M = chg 2.3 2.4 2.5 过放电流检测电压 Discharging overcurrent detection voltage det3 DD =3.0, R2=1.0kΩ 0.11 0.14 0.17 短路检测电压 Short detection voltage 过充电压检测延迟时间 Overcharge detection delay time 过放电压检测延迟时间 Overdischarge detection delay time 过放电流检测延迟时间 Discharging overcurrent detection delay time 短路延迟时间 Short detection delay time 充电器检测电压 Charger detection voltage short DD =3.0 0.9 1.2 1.5 T det1 DD =3.8 4.5 50 100 200 ms T det2 DD =3.2 2.2 50 100 200 ms T det3 T short chg DD =3.0, M =0 0.2 DD =3.5, M =0 1.0 DD =3.6, R2=1.0kΩ 5 10 20 ms 50 100 μs 0.3 0.7 1.1
管脚排列 / Pin Arrangement: 引脚名称 Pin Name 引脚序号 Pin Number DO 1 m 2 CO 3 NC 4 DD 5 SS 6 引脚功能 Pin Function 放电控制输出端 Discharge control output terminal 充 / 放电电流检测输入端 Charge/discharge current detection input 充电控制输出端 Charge control output terminal 不接 Not connected 电源输入端 Power input 电源接地端 Power ground terminal 模块图 / Block Diagram: 应用电路图 / Application Circuits:
符号 Symbol 组件 Components 功能 Function 最小值 Min e 最大值 max 单位 Unit 附注 Notes R1 电阻 Resistor 限流噪声滤波 Current limit Noise filtering 100 1K Ω *1 R2 电阻 Resistor 限流静电保护 Current limit ESD protection 300 1K 2K Ω *4 C1 电容 Capacitor 噪声滤波 Noise Filtering 0.022 0.1 1.0 μf *3 M1 N 沟道 N-MOSFET 放电开关 Discharge switch *2 M2 N 沟道 N-MOSFET 充电开关 Charging switch *2 *1: R 1 是单级的 RC 滤波器中更好的滤波效果的较高的电阻, 如果 R 1 的电阻比推荐值更高, 这将影响内部的检测电路和电压检测将超出规定范围 我们建议使用应用推荐的阻力 R1 is a single-stage RC filter,the higher resistance of R1,the better the filtering effect,if the R1 resistance higher than the recommended value, it will affect the internal detection circuit and the voltage detection accuracy will out of specification. We suggest using the recommended resistance in application. *2: CO 和虚拟机的绝对最大额定值为 28, 客户可以选择 20 或 30 双 N-MOS 管开关, 用于不同的应用 The absolute maximum rating of CO and M is 28, customer could choose 20 or 30 dual N-MOSFET switches for different application. *3: 添加一个电容 C1 DD 和 SS 之间可以过滤传导和辐射噪声 Add a C1 capacitor between DD and SS could filter conduction and radiation noise. *4:R2 电阻可以有一个电流限制功能, 限制充电电流浪涌 R2 resistor could have a current limit function and limit charger current surge.
工作时序图 / Timing Chart: (1) 过充保护 / 过充恢复 & 过放保护 / 过放恢复 Overcharge protection / overcharge recovery & Over-discharge protection / over-discharge recovery:
(2) 过流保护检测 & 负载短路保护检测 Overcurrent detection &Load short-circuit protection detection