A3949SLPTRT Allegro Micro Systems, Inc., A3949SLPTRT Datasheet

A3949SLPTRT

Manufacturer Part Number

A3949SLPTRT

Description

TSSOP-16

Manufacturer

Allegro Micro Systems, Inc.

Datasheet

1.A3949SLPT.pdf (8 pages)

Specifications of A3949SLPTRT

Date_code

07+

Current page: 1 of 8
Download datasheet (227Kb)

Load Supply Voltage

Output Current, I

Sense Voltage, V

Logic Input Voltage, V

Package Power Dissipation, P

Operating Temperature Range

ambient temperature, and heat sinking. Under any set of

conditions,

ground plane.

Output current rating may be limited by duty cycle,

Measured on a typical two-sided PCB with 2 in.

Measured on a JEDEC-standard "High-K" 4-layer PCB.

A3949SLB SOIC

A3949SLP TSSOP

Scale 1:1

A3949SLB

A3949SLP

Ambient Temperature, T

Junction Temperature, T

Storage Temperature, T

AB SO LUTE MAX I MUM RAT INGS

...............................................................36 V

(Peak < 2 μs) ........................................38 V

DO NOT

ENABLE

PHASE

SENSE

ENABLE

SLEEP

MODE

PHASE

SENSE

OUTA

SLEEP

MODE

GND

OUTA

N/C

GND

.......................................... 34ºC / W

N/C

SENSE

OUT

......................................... 52ºC / W

exceed the speciﬁ ed I

(Repetitive)

.........................................0.5 V

......................–0.3 V to 7 V

.................+150°C Max.

...........–55°C to +150°C

............–20°C to +85°C

....................±2.8 A

OUT

or T

copper

A3949

N/C

VREG

VCP

GND

CP2

CP1

OUTB

VBB

N/C

VREG

VCP

GND

CP2

CP1

OUTB

VBB

FEATURES

Use the following complete part numbers when ordering:

in this footnote are in production but have been determined to be LAST TIME

BUY. This classiﬁ cation indicates that sale of this device is currently restricted

to existing customer applications. The variants should not be purchased for

new design applications because obsolescence in the near future is probable.

Samples are no longer available. Status change: October 31, 2006. Deadline

for receipt of LAST TIME BUY orders: April 27, 2007. These variants include:

A3949SLB, A3949SLBTR, A3949SLP, and A3949SLPTR.

Designed for PWM (pulse width modulated) control of dc motors, the

A3949 is capable of peak output currents to ±2.8 A and operating volt-

ages to 36 V.

PHASE and ENABLE input terminals are provided for use in control-

ling the speed and direction of a dc motor with externally applied PWM

control signals. Internal synchronous rectiﬁ cation control circuitry is

provided to reduce power dissipation during PWM operation.

Internal circuit protection includes thermal shutdown with hysteresis,

undervoltage monitoring of V

tion.

The A3949 is supplied in a choice of two power packages, a 16-pin

plastic SOIC with a copper batwing tab (part number sufﬁ x LB), and

a low proﬁ le (1.1mm) 16-pin TSSOP (sufﬁ x LP) with exposed power

tab. Both packages are available in a lead-free version (100% matte tin

leadframe).

Pb-based variants are being phased out of the product line. The variants cited

A3949SLBTR-T

A3949SLPTR-T

Part Number

A3949SLB-T

A3949SLP-T

DMOS Full-Bridge Motor Driver

Single supply operation

Very small outline package

Low R

Sleep function

Internal UVLO

Crossover current protection

Thermal shutdown protection

DS(ON)

outputs

Pb-free

Yes

and V

16-pin, TSSOP

16-pin, SOIC

Package

, and crossover current protec-

1000 per reel

4000 per reel

47 per tube

96 per tube

Packing

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