A3949SLPTRT Allegro Micro Systems, Inc., A3949SLPTRT Datasheet
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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+
Load Supply Voltage
Output Current, I
Sense Voltage, V
Logic Input Voltage, V
Package Power Dissipation, P
Operating Temperature Range
1
ambient temperature, and heat sinking. Under any set of
conditions,
2
ground plane.
3
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
Scale 1:1
V
V
A3949SLB
A3949SLP
Ambient Temperature, T
Junction Temperature, T
Storage Temperature, T
AB SO LUTE MAX I MUM RAT INGS
BB
BB
...............................................................36 V
(Peak < 2 μs) ........................................38 V
DO NOT
ENABLE
PHASE
SENSE
ENABLE
SLEEP
MODE
PHASE
SENSE
OUTA
SLEEP
MODE
GND
OUTA
N/C
3
GND
2
.......................................... 34ºC / W
N/C
SENSE
OUT
......................................... 52ºC / W
exceed the specifi ed I
1
2
3
4
5
6
7
8
(Repetitive)
.........................................0.5 V
1
2
3
4
5
6
7
8
IN
......................–0.3 V to 7 V
J
A
S
.................+150°C Max.
...........–55°C to +150°C
............–20°C to +85°C
D
1
....................±2.8 A
OUT
or T
2
16
15
14
13
12
11
10
16
15
14
13
12
11
10
9
J
9
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
Yes
Yes
Yes
BB
*
and V
16-pin, TSSOP
16-pin, TSSOP
CP
16-pin, SOIC
16-pin, SOIC
Package
, and crossover current protec-
1000 per reel
4000 per reel
47 per tube
96 per tube
Packing