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LM3813-1.0

Features: No external sense element requiredPWM output indicates the current magnitude and directionPWM output can be interfaced with microprocessors Precision DS current-sense technique Low temperature sensitivityInternal filtering rejects false tripsInternal Power-On-Reset (POR)Application Batte...

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SeekIC No. : 004395456 Detail

LM3813-1.0: Features: No external sense element requiredPWM output indicates the current magnitude and directionPWM output can be interfaced with microprocessors Precision DS current-sense technique Low tempera...

LM3813-1.0 Data Sheet

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Part Number:
LM3813-1.0
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

No external sense element required
 PWM output indicates the current magnitude and direction
PWM output can be interfaced with microprocessors
Precision DS current-sense technique
Low temperature sensitivity
Internal filtering rejects false trips
Internal Power-On-Reset (POR)


Application

Battery charge/discharge gauge
Motion control diagnostics
Power supply load monitoring and management
 Resettable smart fuse


Pinout

Connection Diagram


Specifications

Absolute Maximum Supply Voltage
Power Dissipation
ESD Susceptibility (Note 3)
Sense Current (peak, for 200 msec) (Note 4)
Sink Current for PWM pin
Voltage on Pin 5
Maximum Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 sec)		 5.5V
Note 2)
1.5 kV
10A
1mA
5.25V
150°C
−65°C to +150°C
260°C



Description

The LM3813-1.0 Current Gauges provide easy to use precision current measurement with virtually zero insertion loss (typically 0.004W). 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 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 LM3813-1.0 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.




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