Precision Current Gauge IC With Internal Zero Ohm Sense Element And PWM Output

The LM3822 Current Gauge provides easy to use precision current measurement with virtually zero insertion loss (typically 0.003). The LM3822 is used for high-side sensing.
A Delta Sigma Analog to digital converter is incorporated to precisely measure the current and to provide a current averaging function. Current is averaged over 50 msec time periods in order to provide immunity to current spikes. The ICs have a pulse-width modulated (PWM) output which indicates the current magnitude and direction. The shutdown pin CAN be used to inhibit false triggering during start-up, or to enter a low quiescent current mode.
The LM3822 is factory-set in two different current options. The sense range is -1.0A to +1.0A or -2.0A to +2.0A. The sampling interval for this part is 50ms. If faster sampling is desired, please refer to the data sheet for the part number LM3824.
By National Semiconductor Corporation
LM3822 's PackagesLM3822 's pdf datasheet
LM3822MM-1.0 SOIC
LM3822MM-2.0 SOIC
LM3822MMX-1.0 SOIC
LM3822MMX-2.0 SOIC




LM3822 Pinout, Pinouts
LM3822 pinout,Pin out
This is one package pinout of LM3822,If you need more pinouts please download LM3822's pdf datasheet.

LM3822 Application circuits
LM3822 circuits
This is one application circuit of LM3822,If you need more circuits,please download LM3822's pdf datasheet.


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