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。

特点
  • 500nA 静态电流
  • 在整个温度范围内实现了 ±1.5% (最大值) 的准确度
  • 集成精准衰减器
  • 8 种可通过引脚来选择的复位门限
  • 8 种可通过引脚来选择的电源故障门限
  • 预警电源故障输出
  • 200ms 复位超时
  • 手动复位输入
  • 紧凑型 8 引脚、2mm x 2mm DFN 和 TSOT-23 (ThinSOTTM) 封装
典型应用
LTC2935 Typical Application
LTC2935 Typical Application
应用
  • 便携式设备
  • 电池供电型设备
  • 安全系统
  • 销售点设备
  • 无线系统
封装信息
LTC2935 Package Drawing
LTC2935 Package Drawing
Order Information 订购型号
器件型号封装温度价格 (以 1 ~ 99 片为批量)价格 (以 1000 片为批量) *
LTC2935CDC-1#PBF2x2 DFN-8C$1.79
LTC2935CDC-1#TRMPBF2x2 DFN-8C$1.79$1.27
LTC2935CDC-1#TRPBF2x2 DFN-8C$1.79$1.22
LTC2935CDC-2#PBF2x2 DFN-8C$1.79
LTC2935CDC-2#TRMPBF2x2 DFN-8C$1.79$1.27
LTC2935CDC-2#TRPBF2x2 DFN-8C$1.79$1.22
LTC2935CDC-3#PBF2x2 DFN-8C$1.74
LTC2935CDC-3#TRMPBF2x2 DFN-8C$1.74$1.27
LTC2935CDC-3#TRPBF2x2 DFN-8C$1.74$1.22
LTC2935CDC-4#PBF2x2 DFN-8C$1.74
LTC2935CDC-4#TRMPBF2x2 DFN-8C$1.74$1.27
LTC2935CDC-4#TRPBF2x2 DFN-8C$1.74$1.22
LTC2935CTS8-1#PBFSOT-23C$1.79
LTC2935CTS8-1#TRMPBFSOT-23C$1.79$1.27
LTC2935CTS8-1#TRPBFSOT-23C$1.79$1.22
LTC2935CTS8-2#PBFSOT-23C$1.79
LTC2935CTS8-2#TRMPBFSOT-23C$1.79$1.27
LTC2935CTS8-2#TRPBFSOT-23C$1.79$1.22
LTC2935CTS8-3#PBFSOT-23C$1.74
LTC2935CTS8-3#TRMPBFSOT-23C$1.74$1.27
LTC2935CTS8-3#TRPBFSOT-23C$1.74$1.22
LTC2935CTS8-4#PBFSOT-23C$1.74
LTC2935CTS8-4#TRMPBFSOT-23C$1.74$1.27
LTC2935CTS8-4#TRPBFSOT-23C$1.74$1.22
LTC2935IDC-1#PBF2x2 DFN-8I$2.05
LTC2935IDC-1#TRMPBF2x2 DFN-8I$2.05$1.45
LTC2935IDC-1#TRPBF2x2 DFN-8I$2.05$1.40
LTC2935IDC-2#PBF2x2 DFN-8I$2.05
LTC2935IDC-2#TRMPBF2x2 DFN-8I$2.05$1.45
LTC2935IDC-2#TRPBF2x2 DFN-8I$2.05$1.40
LTC2935IDC-3#PBF2x2 DFN-8I$2.00
LTC2935IDC-3#TRMPBF2x2 DFN-8I$2.00$1.45
LTC2935IDC-3#TRPBF2x2 DFN-8I$2.00$1.40
LTC2935IDC-4#PBF2x2 DFN-8I$2.00
LTC2935IDC-4#TRMPBF2x2 DFN-8I$2.00$1.45
LTC2935IDC-4#TRPBF2x2 DFN-8I$2.00$1.40
LTC2935ITS8-1#PBFSOT-23I$2.05
LTC2935ITS8-1#TRMPBFSOT-23I$2.05$1.45
LTC2935ITS8-1#TRPBFSOT-23I$2.05$1.40
LTC2935ITS8-2#PBFSOT-23I$2.05
LTC2935ITS8-2#TRMPBFSOT-23I$2.05$1.45
LTC2935ITS8-2#TRPBFSOT-23I$2.05$1.40
LTC2935ITS8-3#PBFSOT-23I$2.00
LTC2935ITS8-3#TRMPBFSOT-23I$2.00$1.45
LTC2935ITS8-3#TRPBFSOT-23I$2.00$1.40
LTC2935ITS8-4#PBFSOT-23I$2.00
LTC2935ITS8-4#TRMPBFSOT-23I$2.00$1.45
LTC2935ITS8-4#TRPBFSOT-23I$2.00$1.40
演示电路板
器件型号描述价格
DC2344A - Gleanergy Multi-Source Energy Harvesting Demo Board with Battery Chargers and Life-Extenders for Use with DC2321A Dust Demo Board联系凌力尔特
DC2042AENERGY HARVESTING (EH) MULTI-SOURCE DEMOBOARD$200.00
DC2080AEnergy Harvesting (EH) Multi-Source Demo Board with Transducers联系凌力尔特
DC2509AGleanergy Multi-Source E H Demo Board with Battery Chargers and Life-Extenders for Use with DC2321A Dust Demo Board联系凌力尔特
Companion Boards
器件型号描述价格
DC2321ADust Energy Harvesting Demo Board with E-Ink Display, designed to connect to the DC2344A or DC2509A联系凌力尔特
DC2509AGleanergy Multi-Source E H Demo Board with Battery Chargers and Life-Extenders for Use with DC2321A Dust Demo Board联系凌力尔特
数据表
可靠性数据
产品选择卡
LT Journal
CAD 符号
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