LTC2935 具电源故障输出、可选门限的超低功率监控器
LTC®2935 超低功率电压监视器提供了系统初始化、电源故障报警和复位发生功能。低静态电流 (典型值为 500nA) 使 LTC2935 成为电池供电型应用的理想选择。
3 个二进制门限选择输入负责配置 8 种集成复位门限之一，范圍從 1.6V 至 3.45V (以预定的递增梯级)。一个“即将出现低电压条件”的预警将在电源故障输出端 (PFO) 上提供，它的门限在配置复位门限之上。监控电路负责监视 VCC，并在 VCC 降至配置复位门限以下时把 RST 拉至低电平。当 VCC 从一个低于门限的条件逐渐上升时，一个内部复位定时器将在超过复位门限达 5% 之后被起动。一个 200ms 的复位超时延迟了 RST 输出的返回至高态。一个与 MR 输入相连的按钮开关通常用于强制执行手动复位。输出 RST 和 PFO 存在于开路漏极 (LTC2935-1/LTC2935-3) 或有源上拉 (LTC2935-2/LTC2935-4) 电路。工作温度范围为 -40ºC 至 85ºC。
产品特点 Features
参数 |
应用
典型应用图 |
LTC2935 订购信息和价格参考Package Variations and Pricing
| 器件型号 | 封装 | 引脚 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) * |
| LTC2935CDC-1#PBF | DFN | 8 | C | $1.79 | |
| LTC2935CDC-1#TRMPBF | DFN | 8 | C | $1.79 | $1.27 |
| LTC2935CDC-1#TRPBF | DFN | 8 | C | $1.79 | $1.22 |
| LTC2935CDC-2#PBF | DFN | 8 | C | $1.79 | |
| LTC2935CDC-2#TRMPBF | DFN | 8 | C | $1.79 | $1.27 |
| LTC2935CDC-2#TRPBF | DFN | 8 | C | $1.79 | $1.22 |
| LTC2935CDC-3#PBF | DFN | 8 | C | $1.74 | |
| LTC2935CDC-3#TRMPBF | DFN | 8 | C | $1.74 | $1.27 |
| LTC2935CDC-3#TRPBF | DFN | 8 | C | $1.74 | $1.22 |
| LTC2935CDC-4#PBF | DFN | 8 | C | $1.74 | |
| LTC2935CDC-4#TRMPBF | DFN | 8 | C | $1.74 | $1.27 |
| LTC2935CDC-4#TRPBF | DFN | 8 | C | $1.74 | $1.22 |
| LTC2935CTS8-1#PBF | SOT | 8 | C | $1.79 | |
| LTC2935CTS8-1#TRMPBF | SOT | 8 | C | $1.79 | $1.27 |
| LTC2935CTS8-1#TRPBF | SOT | 8 | C | $1.79 | $1.22 |
| LTC2935CTS8-2#PBF | SOT | 8 | C | $1.79 | |
| LTC2935CTS8-2#TRMPBF | SOT | 8 | C | $1.79 | $1.27 |
| LTC2935CTS8-2#TRPBF | SOT | 8 | C | $1.79 | $1.22 |
| LTC2935CTS8-3#PBF | SOT | 8 | C | $1.74 | |
| LTC2935CTS8-3#TRMPBF | SOT | 8 | C | $1.74 | $1.27 |
| LTC2935CTS8-3#TRPBF | SOT | 8 | C | $1.74 | $1.22 |
| LTC2935CTS8-4#PBF | SOT | 8 | C | $1.74 | |
| LTC2935CTS8-4#TRMPBF | SOT | 8 | C | $1.74 | $1.27 |
| LTC2935CTS8-4#TRPBF | SOT | 8 | C | $1.74 | $1.22 |
| LTC2935IDC-1#PBF | DFN | 8 | I | $2.05 | |
| LTC2935IDC-1#TRMPBF | DFN | 8 | I | $2.05 | $1.45 |
| LTC2935IDC-1#TRPBF | DFN | 8 | I | $2.05 | $1.40 |
| LTC2935IDC-2#PBF | DFN | 8 | I | $2.05 | |
| LTC2935IDC-2#TRMPBF | DFN | 8 | I | $2.05 | $1.45 |
| LTC2935IDC-2#TRPBF | DFN | 8 | I | $2.05 | $1.40 |
| LTC2935IDC-3#PBF | DFN | 8 | I | $2.00 | |
| LTC2935IDC-3#TRMPBF | DFN | 8 | I | $2.00 | $1.45 |
| LTC2935IDC-3#TRPBF | DFN | 8 | I | $2.00 | $1.40 |
| LTC2935IDC-4#PBF | DFN | 8 | I | $2.00 | |
| LTC2935IDC-4#TRMPBF | DFN | 8 | I | $2.00 | $1.45 |
| LTC2935IDC-4#TRPBF | DFN | 8 | I | $2.00 | $1.40 |
| LTC2935ITS8-1#PBF | SOT | 8 | I | $2.05 | |
| LTC2935ITS8-1#TRMPBF | SOT | 8 | I | $2.05 | $1.45 |
| LTC2935ITS8-1#TRPBF | SOT | 8 | I | $2.05 | $1.40 |
| LTC2935ITS8-2#PBF | SOT | 8 | I | $2.05 | |
| LTC2935ITS8-2#TRMPBF | SOT | 8 | I | $2.05 | $1.45 |
| LTC2935ITS8-2#TRPBF | SOT | 8 | I | $2.05 | $1.40 |
| LTC2935ITS8-3#PBF | SOT | 8 | I | $2.00 | |
| LTC2935ITS8-3#TRMPBF | SOT | 8 | I | $2.00 | $1.45 |
| LTC2935ITS8-3#TRPBF | SOT | 8 | I | $2.00 | $1.40 |
| LTC2935ITS8-4#PBF | SOT | 8 | I | $2.00 | |
| LTC2935ITS8-4#TRMPBF | SOT | 8 | I | $2.00 | $1.45 |
| LTC2935ITS8-4#TRPBF | SOT | 8 | I | $2.00 | $1.40 |
LTC2935 数据手册及相关资料下载
- 数据手册(英文) : LTC2935 - Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds.PDF
- 可靠性数据 : R544 Reliability Data .PDF
- 产品选型卡 : Voltage Monitors & Supervisors Quick Guide.PDF
