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Home ›  LL38 > LM3812M-1.0-LM3812M-7.0-LM3813M-1.0-LM3813M-7.0-LM3813MX-1.0,Precision Current Gauge IC with Ultra Low Loss Sense Element and PWM Output, for Low-Side Sensing
LM3812M-1.0-LM3812M-7.0-LM3813M-1.0-LM3813M-7.0-LM3813MX-1.0 Fast Delivery,Good Price
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Partno Mfg Dc Qty AvailableDescript
LM3812M-1.0 |LM3812M10NSN/a61avaiPrecision Current Gauge IC with Ultra-Low Loss Sense Element and PWM Output, for High-Side Sensing
LM3812M-7.0 |LM3812M70NSN/a1995avaiPrecision Current Gauge IC with Ultra-Low Loss Sense Element and PWM Output, for High-Side Sensing
LM3813M-1.0 |LM3813M10NSN/a5700avaiPrecision Current Gauge IC with Ultra Low Loss Sense Element and PWM Output, for Low-Side Sensing
LM3813M-7.0 |LM3813M70NSN/a493avaiPrecision Current Gauge IC with Ultra Low Loss Sense Element and PWM Output, for Low-Side Sensing
LM3813MX-1.0 |LM3813MX10NSN/a3585avaiPrecision Current Gauge IC with Ultra Low Loss Sense Element and PWM Output, for Low-Side Sensing


LM3813M-1.0 ,Precision Current Gauge IC with Ultra Low Loss Sense Element and PWM Output, for Low-Side SensingFeaturessensing and the LM3813 is used for low-side sensing.n No external sense element requiredA D ..
LM3813M-7.0 ,Precision Current Gauge IC with Ultra Low Loss Sense Element and PWM Output, for Low-Side SensingLM3812/LM3813 Precision Current Gauge IC with Ultra Low Loss Sense Element and PWMOutputFebruary 20 ..
LM3813MX-1.0 ,Precision Current Gauge IC with Ultra Low Loss Sense Element and PWM Output, for Low-Side SensingPin Description (Low-Side, LM3813)Pin Name Function1 SENSE+, GND High side of internal current sens ..
LM3814M-1.0 ,Fast Current Gauge IC with Ultra-Low Loss Sense Element and PWM Output, for High-Side SensingApplicationsdesired for better accuracy, please refer to the data sheetsn Battery charge/discharge ..
LM3814M-7.0 ,Fast Current Gauge IC with Ultra-Low Loss Sense Element and PWM Output, for High-Side SensingFeatureseraging function. Current is averaged over 6 msec timen No external sense element requiredp ..
LM3815M-1.0 ,Fast Current Gauge IC with Ultra Low Loss Sense Element and PWM Output, for Low-Side SensingGeneral Descriptionaccuracy of the internal sense element) (LM3814-1.0,The LM3814/LM3815 Current Ga ..
LMV711M6X ,Low Power, RRIO Operational Amplifiers with High Output Current Drive and Shutdown OptionLMV710, LMV711 and LMV715 Low Power, RRIO Operational Amplifiers with High Output CurrentDrive and ..
LMV712BL ,Low Power, Low Noise, High Output, RRIO Dual Operational Amplifier with Independent ShutdownApplicationstronics.n Power amplifier control loopn Cellular phonesn Portable equipmentn Wireless L ..
LMV712IDGSRG4 ,Low-Power Low-Noise High-Output RRIO Dual Operational Amplifier With Independent Shutdown 10-VSSOP -40 to 85
LMV712IDGSRG4 ,Low-Power Low-Noise High-Output RRIO Dual Operational Amplifier With Independent Shutdown 10-VSSOP -40 to 85
LMV712IDGSRG4 ,Low-Power Low-Noise High-Output RRIO Dual Operational Amplifier With Independent Shutdown 10-VSSOP -40 to 85
LMV712LD ,Low Power, Low Noise, High Output, RRIO Dual Operational Amplifier with Independent ShutdownElectrical Characteristics Unless otherwise specified, all limits guaranteed for V = 2.7V, V = 0V,> ..


LM3812M-1.0-LM3812M-7.0-LM3813M-1.0-LM3813M-7.0-LM3813MX-1.0
Precision Current Gauge IC with Ultra-Low Loss Sense Element and PWM Output, for High-Side Sensing
LM3812/LM3813
Precision Current Gauge IC with Ultra Low Loss Sense
Element and PWM Output
General Description

The LM3812/LM3813 Current Gauges provide easyto use
precision current measurement with virtually zero insertion
loss (typically 0.004Ω). The LM3812is usedfor high-side
sensing andthe LM3813is usedfor low-side sensing. Delta Sigma analogto digital converteris incorporatedto
precisely measure the current andto providea current av-
eraging function. Currentis averaged over50 msec time
periodsin orderto provide immunityto current spikes. The
ICs havea pulse-width modulated (PWM) output which indi-
catesthe current magnitude and direction. The shutdownpin
canbe usedto inhibit false triggering during start-up,orto
entera low quiescent current mode.
The LM3812 and LM3813 are factory-setin two different
current options. The sense rangeis −1Ato +1Aor −7Ato
+7A. The sampling intervalfor these partsis 50ms.If faster
samplingis desired, please referto the data sheetsfor the
part numbers LM3814 and LM3815.
Key Specifications
Ultra low insertion loss (typically 0.004Ω) 2Vto 5.25V supply range ±2% accuracyat room temperature (includes accuracy the internal sense element) (LM3812-1.0,
LM3813-1.0) Low quiescent currentin shutdown mode (typically
2.5 µA)50 msec sampling interval
Features
No external sense element required PWM output indicatesthe current magnitude and
direction PWM output canbe interfaced with microprocessors PrecisionΔΣ current-sense technique Low temperature sensitivity Internal filtering rejects false trips Internal Power-On-Reset (POR)
Applications
Battery charge/discharge gauge Motion control diagnostics Power supply load monitoring and management Resettable smart fuse
Connection Diagrams

Top View
LM3812
for High-Side Sensing
Top View
LM3813
for Low-Side Sensing
February 2005
LM3812/LM3813
Precision
Current
Gauge
with
Ultra
Low
Loss
Sense
Element
and
PWM
Output
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