19-6370; Rev 0; 6/12 备有评估板 MAX14634 超低导通电阻、结构紧凑的 双向电池开关 概述 优势与特性 MAX14634双向电池开关具有反向保护功能，用于隔离电 池与系统的连接。内部开关具有低至7mΩ (典型值)的超低 导通电阻，输入电压范围：+2.3V至+5.5V，非常适合在高 容量电池系统中用作电池开关。这款器件的摆率控制功能 也非常适合较大的容性负载以及大电流负载的开关应用。 S高能效系统电池开关 集成FET开关支持双向隔离 7mΩ超低导通电阻(典型值) 较宽的输入电压范围：+2.3V至+5.5V 低静态电流 器件采用12焊球(1.3mm x 1.7mm，0.4mm焊球间距) WLP 超小尺寸封装，纤小封装可理想用于空间受限的便携设备。 器件工作在-40℃至+85℃扩展级温度范围。 S节省空间 集成下拉和逻辑缓冲电路 12焊球1.3mm x 1.7mm、0.4mm焊球间距WLP封装 应用 平板电脑电池开关 智能手机电池开关 电池隔离器 典型工作电路 SYSTEM INPUT POWER PATCH CHARGER CHARGER OUTPUT SWITCHING REGULATOR AND CONTROL SYSTEM CONNECTOR PWRB PWRA CONTROL LOGIC EN GND RPD MAX14634 BATTERY PACK MAX14634 超低导通电阻、结构紧凑的 双向电池开关 Absolute Maximum Ratings (All voltages referenced to GND.) PWRA, PWRB, EN....................................................-0.3V to +6V Current into PWRA, PWRB.................................................... Q5A Continuous Power Dissipation (TA = +70NC) WLP (derate 13.7mW/NC above +70NC)....................1096mW Operating Temperature Range........................... -40NC to +85NC Maximum Junction Temperature......................................+150NC Storage Temperature Range............................. -65NC to +150NC Soldering Temperature (reflow).......................................+260NC Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Package Thermal Characteristics (Note 1) WLP Junction-to-Ambient Thermal Resistance (qJA)...........73°C/W Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a fourlayer board. For detailed information on package thermal considerations, refer to china.maximintegrated.com/thermal-tutorial. Electrical Characteristics (VPWRA, VPWRB = 2.3V to 5.5V; TA = -40NC to +85NC, unless otherwise noted. Typical values are at VPWRA, VPWRB = 4.2V; CPWRA, CPWRB = 0.1µF; TA = +25NC.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 5.5 V 1 FA SUPPLY OPERATION Operating Voltage VPWRA VPWRB Quiescent Current IPWRA IPWRB Transient Supply Current Shutdown Current 2.3 VEN = 0.4V, no load 30 EN from high to low or low to high ISHDN VEN = 5.5V, (VPWRA = 5.5V, VPWRB = open) or (VPWRB = 5.5V, VPWRA = open) FA 1 FA INTERNAL FET On-Resistance Between PWRA and PWRB RON TA = +25NC, ILOAD = 100mA VPWRA, VPWRB = 2.3V 8 13 VPWRA, VPWRB = 3.3V 7 10 mI EN INPUT EN Input Logic-High Voltage VIH EN Input Logic-Low Voltage VIL EN Internal Pulldown Resistor 1.6 V 500 RPD 0.4 V 700 kI DYNAMIC Turn-On Time tON Time from EN high-to-low signal to VPWRB/A = 90% of VPWRA/B 3 ms Turn-Off Time tOFF Time from EN low-to-high signal to VPWRB/A = 10% of VPWRA/B, RLOAD = 100I 3 ms Note 2: All devices are 100% production tested at TA = + 25NC. Specifications over the operating temperature range are guaranteed by design. Maxim Integrated 2 MAX14634 超低导通电阻、结构紧凑的 双向电池开关 典型工作特性 (TA = +25°C, unless otherwise noted.) 5 4 3 2 7 6 5 4 3 2 1 1 0 0 0 1 2 3 4 5 6 MAX14634 toc03 VEN = 0V 45 40 35 30 25 VPWRA = 5V 20 15 VPWRA = 4.2V 10 VPWRA = 2.7V 5 0 0 1 2 3 4 5 6 -40 -15 10 35 85 60 PWRB VOLTAGE (V) TEMPERATURE (°C) PWRB QUIESCENT SUPPLY CURRENT vs. TEMPERATURE PWRA SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE PWRB SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE 35 30 25 VPWRB = 5V 20 15 VPWRB = 4.2V 10 VPWRB = 2.7V 5 VPWRA = 5V, VPWRB = OPEN 4 VPWRA = 4.2V, VPWRB = OPEN 3 VPWRA = 2.7V, VPWRB = OPEN 2 1 0 VPWRA = 5V, VPWRB = 5V -1 VPWRA = 4.2V, VPWRB = 5V -40 -15 10 35 -40 85 60 -15 10 35 VPWRB = 4.2V, VPWRA = OPEN 3 VPWRB = 2.7V, VPWRA = OPEN 2 1 0 VPWRB = 5V, VPWRA = 5V -1 VPWRB = 4.2V, VPWRA = 5V VPWRB = 2.7V, VPWRA = 5V -2 85 60 -40 -15 60 85 1.20 MAX14634 toc08 2.5 35 NORMALIZED ON-RESISTANCE vs. LOAD CURRENT MAX14634 toc07 VPWRB = OPEN 10 TEMPERATURE (ºC) PWRA SHUTDOWN CURRENT vs. EN VOLTAGE 3.0 VEN = 1.8V VPWRB = 5V, VPWRA = OPEN 4 TEMPERATURE (ºC) TEMPERATURE (°C) 1.15 VPWRA = 2.7V NORMALIZED RON PWRA SHUTDOWN CURRENT (µA) 5 VPWRA = 2.7V, VPWRB = 5V -2 0 VEN = 1.8V PWRB SHUTDOWN CURRENT (µA) 40 5 PWRA SHUTDOWN CURRENT (µA) VEN = 0V 45 MAX14634 toc05 PWRA VOLTAGE (V) 50 PWRB QUIESCENT CURRENT (nA) 8 50 MAX14634 toc06 6 VEN = 0V CPWRA = 1µF CPWRB = 1µF 9 PWRA QUIESCENT CURRENT (nA) 7 MAX14634 toc04 PWRA QUIESCENT CURRENT (nA) 8 10 MAX14634 toc02 VEN = 0V CPWRA = 1µF CPWRB = 1µF 9 PWRB QUIESCENT CURRENT (nA) 10 PWRA QUIESCENT SUPPLY CURRENT vs. TEMPERATURE PWRB QUIESCENT SUPPLY CURRENT vs. SUPPLY VOLTAGE MAX14634 toc01 PWRA QUIESCENT SUPPLY CURRENT vs. SUPPLY VOLTAGE 2.0 VPWRA = 5.5V 1.5 1.0 VPWRA = 4.2V VPWRA = 3.3V 0.5 VPWRA = 4.2V 1.05 1.00 VPWRA = 5V 0.95 0 0.90 0 1 2 3 4 EN VOLTAGE (V) Maxim Integrated 1.10 5 6 0 1 2 3 4 5 6 LOAD CURRENT (A) 3 MAX14634 超低导通电阻、结构紧凑的 双向电池开关 典型工作特性(续) (TA = +25°C, unless otherwise noted.) NORMALIZED ON-RESISTANCE vs. PWRB VOLTAGE 1.3 1.1 1.0 0.9 0.8 1.2 1.1 1.0 0.9 0.8 0.7 0.7 0.6 0.6 ILOAD = 100mA 0.5 2 3 4 5 6 2 3 4 5 0.9 0.8 0.5 6 -40 -15 10 35 60 85 TEMPERATURE (°C) MAX14634 toc12 5.0 VPWRA = 2.7V VPWRA = 4.2V 4.5 RLOAD = 10I 4.0 3.5 TURN-OFF TIME (ms) TURN-ON TIME (ms) 1.0 SWITCH TURN OFF-TIME vs. TEMPERATURE RLOAD = 10I 4.5 3.0 2.5 2.0 VPWRA = 4.2V 3.5 3.0 2.5 2.0 VPWRA = 2.7V 1.5 1.0 0.5 0.5 0 0 -40 -15 10 35 60 85 -40 TEMPERATURE (°C) MAX14634 toc14 2ms /div -15 10 35 60 85 TEMPERATURE (°C) SWITCH-ON WAVEFORM Maxim Integrated 1.1 VPWRB (V) 5.0 1.0 1.2 0.6 ILOAD = 100mA 0.5 SWITCH TURN ON-TIME vs. TEMPERATURE 1.5 1.3 0.7 VPWRA (V) 4.0 VPWRA = 4.2V ILOAD = 100mA 1.4 MAX14634 toc13 NORMALIZED RON 1.2 1.4 NORMALIZED RON 1.3 1.5 MAX14634 toc10 1.4 NORMALIZED RON 1.5 MAX14634 toc09 1.5 NORMALIZED ON-RESISTANCE vs. TEMPERATURE MAX14634 toc11 NORMALIZED ON-RESISTANCE vs. PWRA VOLTAGE SWITCH-OFF WAVEFORM MAX14634 toc15 RLOAD = 10I RLOAD = 10I VEN 5V/div VEN 5V/div VPWRA 5V/div VPWRA 5V/div VPWRB 5V/div VPWRB 5V/div IPWRA 0.5A /div IPWRA 0.5A /div 2ms /div 4 MAX14634 超低导通电阻、结构紧凑的 双向电池开关 焊球配置 TOP VIEW (BUMPS ON BOTTOM) 1 MAX14634 2 3 4 + PWRB PWRA PWRB EN PWRB PWRA PWRB PWRA GND PWRA PWRB PWRA A B C 12-WLP 焊球说明 焊球 名称 A1, A3, B1, B3, C3 PWRB 电源I/O。 A2, B2, B4, C2, C4 PWRA 电源I/O。 A4 C1 Maxim Integrated EN GND 功能 低电平有效使能输入，拉低EN使开关导通。 地。 5 MAX14634 超低导通电阻、结构紧凑的 双向电池开关 功能框图 INTERNAL BIAS CIRCUIT PWRB PWRA EN GND RPD MAX14634 详细说明 MAX14634是一款具有反向电流保护的双向开关，导通电 阻仅为7mΩ (典型值)。器件具有低静态电流特性，工作在 +2.3V至+5.5V输入电压范围，非常适合在高容量电池应用 中用作电池开关。这款器件的摆率控制功能也非常适合较 大的容性负载以及大电流负载的开关应用。 定购信息 PART TEMP RANGE TOP MARK PINPACKAGE MAX14634EWC+T -40NC to +85NC ACO 12 WLP +表示无铅(Pb)/符合RoHS标准的封装。 T = 卷带包装。 反向电流保护 当开关禁用时，双向FET开关可防止电流从一个电源输入 引脚流向另一电源输入引脚。 芯片信息 PROCESS: BiCMOS EN输入 封装信息 开关状态由EN低电平有效逻辑输入控制。当EN为低电平 时，开关导通；EN为高电平时，开关断开。RPD在内部将 EN下拉接地。 封装类型 封装编码 文档编号 焊盘布局编号 12 WLP W121F1+1 21-0449 参见 应用笔记1891 6