编辑: liubingb | 2018-05-15 |
MAX4210/MAX4211 利用高边电流检测放大器来测量负载电流,由于不影响 负载的接地通路,特别适合电池供电系统. MAX4210是简单的小尺寸、6引脚功率监视器,专为电路 板空间受限的应用而设计.MAX4210A/B/C内部集成了25:1 的电阻分压网络,可以减少元件数目.MAX4210D/E/F使 用外部电阻分压网络,提供更强的设计灵活性. MAX4211是功能完整的电流与功率监视器.该器件集成 了高边电流检测放大器、1.21V带隙基准、两个带漏极开 路输出的比较器,可以对功率过大、过流与/或过压条件 进行监视.漏极开路输出可以与28V的高压连接,适用于 电路断路器应用中高边开关的驱动. MAX4210/MAX4211电流检测放大器具有三种不同的增 益选项:16.67V/V、25.00V/V与40.96V/V.MAX4210提供3mm x 3mm的6引脚TDFN封装与8引脚?MAX?封装, MAX4211采用4mm x 4mm的16引脚薄型QFN封装与 16引脚TSSOP封装.这些器件都工作在-40°C至+85°C扩 展级温度范围. 应用 过功率电路断路器 智能电池组/充电器 智能外设控制器 短路保护 电源显示 测量仪表 基带模拟乘法器 VGA电路 功率电平检测器 特性 ? 电流与功率实时监视 ? ±1.5% (最大值) 电流检测精度 ? ±1.5% (最大值) 功率检测精度 ? 两个独立的比较器 (MAX4211) ? 1.21V基准输出 (MAX4211) ? 三种电流/功率增益选项 ? 100mV/150mV电流检测满量程电压 ? 输入源电压范围 : +4V至+28V ? 电源电压范围 : +2.7V至+5.5V ? 低电源电流 : 380?A (MAX4210) ? 220kHz带宽 ? 小尺寸、6引脚TDFN与8引脚?MAX封装 (MAX4210) MAX4210/MAX4211 高边功率、电流监视器 Maxim Integrated Products
1 定购信息 + - MAX4211A MAX4211B MAX4211C IOUT VCC + RS- RS+ - RSENSE VSENSE LOAD 1.21V REFERENCE POUT REF 2.7V TO 5.5V + - 4V TO 28V CIN1+ INHIBIT COUT1 COUT2 LE CIN1- CIN2+ CIN2- GND 25:1 PART TEMP RANGE PIN-PACKAGE TOP MARK MAX4210AETT-T -40°C to +85°C
6 TDFN-6-EP* (3mm x 3mm) AHF MAX4210AEUA -40°C to +85°C
8 ?MAX ― 功能框图 19-3285;
Rev 1;
5/05 本文是Maxim正式英文资料的译文,Maxim不对翻译中存在的差异或由此产生的错误负责.请注意译文中可能存在文字组织或 翻译错误,如需确认任何词语的准确性,请参考 Maxim提供的英文版资料. 索取免费样品和最新版的数据资料,请访问Maxim的主页:www.maxim-ic.com.cn. *EP = 裸焊盘. 定购信息在数据资料的最后有进一步说明. 引脚配置与选型指南在数据资料的最后给出. 可提供评估板 功能框图请参考本资料的后续部分. ?MAX是Maxim Integrated Products, Inc.的注册商标. MAX4210/MAX4211 高边功率、电流监视器
2 ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS (VCC = 5.0V, VRS+ = 25V, VSENSE = 5mV, VIN = 1.0V, VLE = 0V, RIOUT = RPOUT = 1M?, VCIN1+ = VCIN2+ = VREF, VCIN1- = VCIN2- = GND, VINHIBIT = 0V, RCOUT1 = RCOUT2 = 5k? connected to VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1) 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. VCC, IN, CIN1, CIN2 to GND.0.3V to +6V RS+, RS-, INHIBIT, LE, COUT1, COUT2 to GND...-0.3V to +30V IOUT, POUT, REF to GND.0.3V to (VCC + 0.3V) Differential Input Voltage (VRS+ - VRS-5V Maximum Current into Any Pin.10mA Output Short-Circuit Duration to VCC or GND 10s Continuous Power Dissipation (TA = +70°C) 6-Pin TDFN (derate 24.4mW/°C above +70°C)1951mW 8-Pin ?MAX (derate 4.5mW/°C above +70°C)362mW 16-Pin TSSOP (derate 9.4mW/°C above +70°C)754mW 16-Pin Thin QFN (derate 25mW/°C above +70°C) .....2000mW Operating Temperature Range 40°C to +85°C Junction Temperature.150°C Storage Temperature Range 65°C to +150°C Lead Temperature (soldering, 10s)300°C PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Voltage Range (Note 2) VCC 2.7 5.5 V Common-Mode Input Range (Note 3) VCMR Measured at RS+