Precision Current Gauge IC With Ultra-Low Loss Sense Element And PWM Output, For High-Side Sensing

The LM3812 LM3813 Current Gauges provide easy to use precision current measurement with virtually zero insertion loss (typically 0.004). The LM3812 is used for high-side sensing and the LM3813 is used for low-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 LM3812 and LM3813 are factory-set in two different current options. The sense range is -1A to +1A or -7A to +7A. The sampling interval for these parts is 50ms. If faster sampling is desired, please refer to the data sheets for the part numbers LM3814 and LM3815.
By National Semiconductor Corporation
Part Manufacturer Description Datasheet Samples
LM3812EVAL Texas Instruments Precision Current Gauge IC with Ultra-Low Loss Sense Element and PWM Output, for High-Side Sensing
LM3812 's PackagesLM3812 's pdf datasheet
LM3812M-1.0 SOIC
LM3812M-7.0 SOIC
LM3812MX-1.0 SOIC
LM3812MX-7.0 SOIC




LM3812 Pinout, Pinouts
LM3812 pinout,Pin out
This is one package pinout of LM3812,If you need more pinouts please download LM3812's pdf datasheet.

LM3812 Application circuits
LM3812 circuits
This is one application circuit of LM3812,If you need more circuits,please download LM3812's pdf datasheet.


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