General Description
The MAX9937 is a tiny automotive grade current-sense amplifier designed for unidirectional high-side currentsense applications. This device addresses major areas of concern for automotive applications including loaddump protection up to +40V, reverse-battery protection, and filtering for EMI and transient performance.
The MAX9937 also features a low input offset voltage of ±1.2mV (max) at +25°C with a low temperature drift of just 1µV/°C (typ).
The MAX9937 is available in a 5-pin SC70 package and is rated over the -40°C to +125°C temperature range.

FEATUREs
♦ Reverse Battery and Load-Dump Protection -20V to +40V
♦ +4V to +28V Input Common-Mode Range
♦ Flexible EMI Filtering
♦ Low VOS: ±1.2mV (max)
♦ Low VOS Drift: 1µV/°C (typ)
♦ 20µA Supply Current
♦ 350kHz, 3dB Small Signal Bandwidth

APPLICATIONs
   Automotive Battery Current Sense
   Fuse Box Current Sense
   ECU Current Monitor