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A3940KLWTR-T

A3940KLWTR-T

A3940KLWTR-T

Allegro MicroSystems

7.5mm mm Motor Drivers 28 15V V 17.9mm mm

SOT-23

A3940KLWTR-T Datasheet PDF

non-compliant

Technical Specifications

Parameter NameValue
TypeParameter
Mount Surface Mount
Mounting Type Surface Mount
Package / Case 28-SOIC (0.295, 7.50mm Width)
Operating Temperature-40°C~135°C TA
PackagingTape & Reel (TR)
Published 2009
JESD-609 Code e3
Part StatusObsolete
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Number of Terminations 28
ECCN Code EAR99
Terminal Finish Matte Tin (Sn)
Applications Automotive
Voltage - Supply 7V~40V
Terminal Position DUAL
Terminal FormGULL WING
Peak Reflow Temperature (Cel) 260
Supply Voltage 15V
Terminal Pitch1.27mm
Time@Peak Reflow Temperature-Max (s) 40
Base Part Number A3940
JESD-30 Code R-PDSO-G28
Function Controller - Commutation, Direction Management
Number of Outputs 4
Qualification StatusNot Qualified
Interface Parallel
Output Configuration Pre-Driver - Half Bridge (2)
Output Current400mA
Turn On Time0.225 μs
Output Peak Current Limit-Nom 0.8A
High Side Driver YES
Turn Off Time 0.225 μs
Motor Type - AC, DC Brushed DC
Length 17.9mm
Height Seated (Max) 2.65mm
Width 7.5mm
RoHS StatusROHS3 Compliant
Lead Free Lead Free
In-Stock:3448 items

A3940KLWTR-T Product Details

A3940KLWTR-T Overview


The design includes a package of type [0].Drivers controllers is packaged wDrivers controllersh a 28-SOIC (0.295, 7.50mm Width) case.In most cases, it is recommended to mount the part at Surface Mount.I believe it would be suitable for the component connected to Automotive.A device with a voltage range of 7V~40V volts is available.The operating temperature ranges from -40°C~135°C TAto -40°C~135°C TA.In this case, the motor type is Brushed DC.The part supports 28terminations.Drivers controllers is important to note that this amplifier should be operated at the 15Vsetting.Surface Mountis the recommended mounting method.A3940is the part number that finds it.A total of 4outputs are available.Having a 400mAoutput current, it provides maximum design flexibility.

A3940KLWTR-T Features


Applications : Automotive
base on A3940 number
designed with 4 outputs


A3940KLWTR-T Applications


There are a lot of Allegro MicroSystems
A3940KLWTR-T motor drivers applications.


  • Dome
  • Dash
  • Footwell lighting
  • Indicator
  • Telltale lights
  • Infotainment backlighting
  • Tail lights
  • Turn signals
  • Brake lights
  • CHMSL (center high-mount stop lamps)

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