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Partname: | LM3813MX-1.0 |
Description: | Precision Current Gauge IC with Ultra Low Loss Sense Element and PWM Output, for Low-Side Sensing |
Manufacturer: | National Semiconductor |
Package: | SOIC NARROW |
Pins: | 8 |
Datasheet: | PDF (258K). Click here to download *) |
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. |
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Click here to download LM3813MX-1.0 Datasheet*) |
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