用于移动设备中高功率应用的高性能、升压直流/直流转换器 9-DSBGA -40 to 125
LM8850 is a step-up DC-DC converter optimized for use with a supercapacitor to protect a battery from power surges and enable new high power applications in mobile device architectures. The device creates an ideal rail from 3.6V to 5.7V boosting from a single Li-Ion cell with an input voltage range of 2.3V to 5.5V; Target VOUT must be at least 10% higher than VIN.
An I2C interface controlling multiple output voltage settings, input current limits, and load currents up to 1A provides superior user flexibility. The LM8850 operates in Auto mode, where the converter is in PFM mode at light loads and switches to PWM mode at heavy loads. Hysteretic PFM extends the battery life by reduction of the quiescent current to 6µA typ. during light load and standby conditions. Synchronous operation provides true shutdown isolation and improves its efficiency at medium-to-full load conditions.
High-switching frequency enables smaller passive components. Internal compensation is used for a broader range of inductor and output capacitor values to meet system demand and achieve small system solution size.
LM8850 is available in a 9-bump ultra-thin DSBGA package. Only four external surface-mount components, a 1.0 µH inductor, a 4.7 µF for input capacitor, 4.7 µF for output capacitor and 0.05F-1.0F supercapacitor for energy storage are required.
输出接口数 1
输出电压 3.6V ~ 5.7V
输出电流 1 A
静态电流 6.00 µA
调节输出数 1
开关频率 2.5 MHz
拓扑结构 Boost
输入电压Max 5.5 V
输入电压Min 2.3 V
输出电压Max 5.7 V
输出电压Min 3.6 V
输出电流Max 1 A
工作温度Max 85 ℃
工作温度Min -40 ℃
输入电压 2.3V ~ 5.5V
安装方式 Surface Mount
引脚数 9
封装 XFBGA-9
封装 XFBGA-9
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
LM8850URE/NOPB TI 德州仪器 | 当前型号 | 当前型号 |
LM8850URX/NOPB 德州仪器 | 类似代替 | LM8850URE/NOPB和LM8850URX/NOPB的区别 |