A3941klptr-T Power Led Driver Ic controllers Drivers Automotive Tssop-28
Description
Allegro MicroSystems,A3941KLPTR-T,TSSOP-28, Motor / Motion / Ignition Controllers & Drivers
AUTOMOTIVE FULL BRIDGE MOSFET
The A3941 is a full-bridge controller for use with external N-channel power MOSFETs and is
specifically designed for automotive applications with high-power inductive loads, such as brush DC
motors.
A unique charge pump regulator provides full (>10 V) gate drive for battery voltages down to 7 V and
allows the A3941 to operate with a reduced gate drive, down to 5.5 V.
A bootstrap capacitor is used to provide the above-battery supply voltage required for N-channel
MOSFETs. An internal charge pump for the high-side drive allows DC (100% duty cycle) operation.
The full bridge can be driven in fast or slow decay modes using diode or synchronous rectification.
In the slow decay mode, current recirculation can be through the high-side or the lowside FETs.
The power FETs are protected from shoot-through by resistor adjustable dead time.
Integrated diagnostics provide indication of undervoltage, overtemperature, and power bridge faults,
and can be configured to protect the power MOSFETs under most short circuit conditions.
The A3941 is supplied in a 28-pin TSSOP power package with an exposed thermal pad (suffix LP).
This package is lead (Pb) free, with 100% matte-tin leadframe plating.
Features
▪ High current gate drive for N-channel MOSFET full bridge
▪ High-side or low-side PWM switching
▪ Charge pump for low supply voltage operation
▪ Top-off charge pump for 100% PWM
▪ Cross-conduction protection with adjustable dead time
▪ 5.5 to 50 V supply voltage range
▪ Integrated 5 V regulator
▪ Diagnostics output
▪ Low current sleep mode
Applications
Automotive Full Bridge MOSFET Driver
Date Sheet
| roduct Attribute | Attribute Value |
| Allegro MicroSystems |
| Product Category: | Motor / Motion / Ignition Controllers & Drivers |
| Brushed DC Motor Drivers |
| Full Bridge |
| 5.5 V to 50 V |
| 28 mA |
| 10 mA |
| - 40 C |
| + 150 C |
| SMD/SMT |
| TSSOP-28 |
| Reel |
| Cut Tape |
| Load Voltage Rating: | 5.5 V to 50 V |
| Moisture Sensitive: | Yes |
| Output Voltage: | 5 V |
| Series: | A3941 |
| Factory Pack Quantity: | 4000 |
| Subcategory: | PMIC - Power Management ICs |
FAQ
Shipping:
1, We can shipping all over the world by DHL, UPS, FEdex, TNT and EMS.The packaging is very
safe and strong. Please nitfy me you have any special needs
2, It will take around 3-5 days to reach your hands.
Product Type & condition:
Because of the fluctuant sales situation. the stock parts are always changing and the stock list cannot
be, promptly updated.So please consult the stock situation when you inquire.
Buyer Reading:
1. Please confirm receipt of products if the items you received,and if the goods was damaged please
contact us immediately. send the photo to us that we can check and give you best solution
2. We only guarantee delivery in time but we couldn't control the express delivery time. Our related
sales person will be responsible to send the AWB for the delivered goods in the next workday.
you can check the AWB in the website which we send to you. For the AWByou also can call to the
local branch of the express company in your company.
Pre-sales service :
1. Our team design and make solutions based on different requirements from different customers.
2. We provide 24-hours service,and every message you quote inquiry will be replied within12 hours
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