A3944KLPTR-T Allegro Microsystems Inc, A3944KLPTR-T Datasheet

A3944KLPTR-T

Manufacturer Part Number

A3944KLPTR-T

Description

IC PREDRIVER MOSFET 6CH TSSOP

Manufacturer

Allegro Microsystems Inc

Datasheet

1.A3944KLPTR-T.pdf (31 pages)

Specifications of A3944KLPTR-T

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

A3944KLPTR-T

Manufacturer:

HEIMANN

Quantity:

2 100

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Features and Benefits

• 6 channels

• Drives logic-level N-channel MOSFETs

• 50 mA gate drive current

• Short and open detection

• High voltage (50 V) drain feedback inputs

• Programmable fault timers and thresholds per channel

• UVLO and thermal warning circuitry

• Serial or parallel gate drive control

• Highly configurable, through SPI compatible interface

• Compact TSSOP package

Applications:

• Automotive ECU

• Automotive high-side actuators

Package: 28-pin TSSOP with exposed

thermal pad (suffix LP)

Not to scale

A3944-DS

Controller

Typical Application Diagram

Parallel

SPI

Automotive, Low-Side FET Pre-Driver

A3944

Description

The A3944 is a programmable 6 channel low-side MOSFET

pre-driver suitable for use in automotive applications. Each

channel is controllable by a combination of parallel and serial

inputs and provides sufficient gate drive current to allow

PWM control up to 10 kHz, depending on the MOSFET gate

charge.

Each channel provides independent fault diagnostics for short

to ground and open load when in the off-state, and short to

battery when in the on-state. A short to battery can disable

the output until reset or for a programmable retry time. Each

channel provides independently programmable fault thresholds

and blanking times.

In addition to channel state control, channel fault masking, fault

thresholds and fault timers are programmed through the SPI

compatible serial interface. The serial interface also provides

read back of the fault status for each channel.

Digital inputs and outputs are compatible with 3.3 and 5 V

supplies.

The A3944 is supplied in a 28 lead TSSOP package (suffix

LP) with an exposed thermal pad. The package is lead (Pb)

free with 100% matte-tin leadframe plating.

A3944

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