A3941klptr-T Power Led Driver Ic

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                                                                                                              

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