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2022-09-24 23:33:15
LM3812M-7.0-Precision Ultra Low Loss Detection Element and PWM Output Ammeter IC
The LM3812/LM3813 current meters provide easy-to-use accurate current measurements with virtually zero insertion loss (typically 0.004W). LM3812 is for high-side sensing and LM3813 is for low-side sensing. A delta-sigma analog-to-digital converter is incorporated to accurately measure current and provide current averaging. The current averaged 50 ms period in order to provide immunity to current spikes. The IC has a pulse width modulation (PWM) output, which indicates the magnitude and direction of the current. The shutdown pin can be used to suppress false triggering during startup, or to enter a low quiescent current mode. The LM3812 and LM3813 are factory set in two different current options. The detection range is - 1A1 or 7A to 7A. The sampling interval for these parts is 50ms. If faster sampling is required, see the datasheet section LM3814 and LM3815.
Features
* No external sensory elements required
* PWM output indicates the magnitude and direction of the current
* PWM output, can interface with microprocessor
* Precision DS current detection technology
* Low temperature sensitivity
* Internal filter rejects fake action
* Internal power-on reset (POR)
application
* Battery charge/discharge meter
* Motion Control Diagnostics
* Monitoring and management of power supply loads
* Duplex smart FUS