Datenblatt-Suchmaschine für elektronische Bauteile |
|
LM3813MX-7.0 Datenblatt(PDF) 1 Page - National Semiconductor (TI) |
|
|
LM3813MX-7.0 Datenblatt(HTML) 1 Page - National Semiconductor (TI) |
1 / 14 page LM3812/LM3813 Precision Current Gauge IC with Ultra Low Loss Sense Element and PWM Output General Description The LM3812/LM3813 Current Gauges provide easy to use precision current measurement with virtually zero insertion loss (typically 0.004 Ω). 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 aver- aging function. Current is averaged over 50 msec time peri- ods 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 cur- rent options. The sense range is −1A to +1A or −7A to +7A. The sampling interval for these parts is 50ms. If faster sam- pling is desired, please refer to the data sheets for the part numbers LM3814 and LM3815. Key Specifications n Ultra low insertion loss (typically 0.004 Ω) n 2V to 5.25V supply range n ±2% accuracy at room temperature (includes accuracy of the internal sense element) (LM3812-1.0, LM3813-1.0) n Low quiescent current in shutdown mode (typically 2.5 µA) n 50 msec sampling interval Features n No external sense element required n PWM output indicates the current magnitude and direction n PWM output can be interfaced with microprocessors n Precision ∆Σ current-sense technique n Low temperature sensitivity n Internal filtering rejects false trips n Internal Power-On-Reset (POR) Applications n Battery charge/discharge gauge n Motion control diagnostics n Power supply load monitoring and management n Resettable smart fuse Connection Diagrams DS100122-1 Top View LM3812 for High-Side Sensing DS100122-3 Top View LM3813 for Low-Side Sensing June 1999 © 1999 National Semiconductor Corporation DS100122 www.national.com |
Ähnliche Teilenummer - LM3813MX-7.0 |
|
Ähnliche Beschreibung - LM3813MX-7.0 |
|
|
Link URL |
Privatsphäre und Datenschutz |
ALLDATASHEETDE.COM |
War ALLDATASHEET hilfreich? [ DONATE ] |
Über Alldatasheet | Werbung | Kontakt | Privatsphäre und Datenschutz | Linktausch | Hersteller All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |