NBM7100A/B 是一款电池能量管理器件，旨在在需要突发电流负载的低电压、低功耗应用中最大限度地提高不可充电一次电池的可用容量。这些器件克服了与从锂原电池（例如 3 V 锂二氧化锰 (LiMnO2) 纽扣电池）提取高脉冲电流（图 1）相关的压降和电池寿命限制。常用于无线、低功耗物联网传感器应用。NBM7100A/B 包含两级高效 DC-DC 转换和智能学习算法。第一级 DC-DC 转换以低恒定电流将能量从锂电池传输到电容存储元件。充电后，第二个 DC-DC 转换周期利用存储的能量在 VDH 输出引脚上提供具有高脉冲负载电流能力的稳压电压。电池永远不会直接承受大负载脉冲电流，从而产生更长、更可预测的电池寿命

特性

• Programmable constant battery load current: 2 mA to 16 mA

• Protection against battery voltage dips (Brown-out)

• Pulse output current: > 200 mA

• Low ripple regulated programmable output voltage, VDH: 1.8 V to 3.6 V

• Ultra-low standby current: < 50 nA

• Peak conversion efficiency > 90% with adaptive optimization

• Integrated fuel gauge

• Small 16 pin lead-free package (SOT763-1/DHVQFN16; 2.5 mm × 3.5 mm × 0.85 mm)

• Specified from -40 °C to +85 °C

目标应用

• Battery powered wireless microcontroller applications (IoT): Bluetooth®, LoRaWAN®, Sigfox™, LTE-M, NB-IoT, Zigbee, etc.

• Industrial: temperature, occupancy, e-metering, electronic shelf label, asset tracking, irrigation monitoring

• Consumer/wearable: location tags, heart rate monitor, blood glucose meter, remote controls, key fobs