Усилители считывания тока MAX4374TESD+

Токочувствительный усилитель , высокой стороны, микромощный, 1 Усилитель, 4 мкА, NSOIC

The MAX4374TESD+ is a low cost, micropower, high side current sense supervisor in 14 pin NSOIC package. This device contains a high side current sense amplifier, bandgap reference and comparator with latching output to monitor a supply for an overcurrent condition. It features a voltage output that eliminates the need for gain setting resistors making it ideal for applications where battery/DC current monitoring is critical. High side current monitoring is especially useful in battery-powered systems since it does not interfere with the ground path of the battery charger. The 0 to +28V input common mode range is independent of the supply voltage which ensures that the current sense feedback remains viable even when connected to a battery pack in deep discharge. The comparator output of the MAX4374 is latched to provide a turn-off flag that doesn't oscillate. It is used in power management systems, general system/board level current monitoring and precision current sources.

• Integrated current sensing solution simplifies high side current monitoring
• Supply voltage range from 2.7V to 28V
• Operating temperature range from -40°C to 85°C
• Input bias current of 2.5µA (VRS+ > 2V) and input offset voltage of 0.1mV at TA = +25°C
• Full scale accuracy of 2%
• Internal bandgap reference of ±1.6% accuracy
• Low power consumption extends battery life, supply current of 50µA
• Common mode rejection of 85dB at VRS+ > 2V and power supply rejection of 87dB at VRS+ > 2V
• Gain of +100V
• V and -3dB bandwidth of 120KHz at VSENSE = 100mV, gain = +50V

• Second comparator for use in window detection functions

Области применения

Мониторинг Системы, Переносные Устройства, Потребительская Электроника