LT6105

• Product Introduction

LT6105 accurate, extended input range current sense amplifier

peculiarity

• 非常宽、Over-the-Top®、输入共模范围
  - 扩展至 V¯ 以上 44V (与 V⁺ 无关)
  - 扩展至 V¯ 以下 0.3V
• 宽电源范围：2.85V 至 36V
• 输入失调电压：300μV (最大值)
• 增益准确度：1% (最大值)
• 可采用外部电阻器来进行增益配置
• 工作电流：150μA
• 转换速率：2V/μs
• 断电时的检测输入电流：1nA
• 全标度输出电流：1mA (最小值)
• 工作温度范围：-40℃ 至 125℃
• 采用 2mm x 3mm DFN 封装和 8 引线 MSOP 封装
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description

®The LT 6105 is a micro-power, accurate current-sense amplifier with a very wide input common-mode range. The LT6105 monitors unidirectional current through an external detection of voltage across the resistor. The input common-mode range extends from -0.3V to 44V (relative to the negative supply voltage V). This allows the LT6105 to function as a high-side current-sense monitor or a low-side current-sense monitor. It also allows the LT6105 to monitor current over a negative supply voltage and continuously monitor a battery from full charge to depletion. The LT6105's input is capable of withstanding differential voltages up to ±44V, making it ideal for monitoring fuses or MOSFET switches. Utilize an external resistor for gain configuration in the range of 1V/V to 100V/V. Input common-mode rejection and supply rejection exceed 100dB, and input offset voltages are less than 300μV. A minimum slew rate of 2V/μs ensures a fast response to unexpected current changes. The LT6105 operates from a stand-alone 2.85V to 36V supply and draws only 150μA. When V+ is powered off, the detection pin is biased to be cut off. This prevents the loading of the monitored circuit (independent of the sense voltage). The LT6105 is available in a 6-lead DFN package and an 8-lead MSOP package.

apply

• 高压侧或低压侧电流检测
• 正或负电源电压上的电流监视
• 电池监视
• 熔丝/MOSFET 监视
• 汽车
• 电源管理
• 便携式测试/测量系统