A3953SLBTR-T Allegro Microsystems Inc, A3953SLBTR-T Datasheet

IC MOTOR DRIVER PWM FULL 16-SOIC

A3953SLBTR-T

Manufacturer Part Number
A3953SLBTR-T
Description
IC MOTOR DRIVER PWM FULL 16-SOIC
Manufacturer
Allegro Microsystems Inc
Datasheet

Specifications of A3953SLBTR-T

Applications
PWM Motor Driver
Number Of Outputs
1
Current - Output
±1.3A
Voltage - Load
3 V ~ 50 V
Voltage - Supply
3 V ~ 5.5 V
Operating Temperature
-20°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.300", 7.5mm Width)
Motor Type
Full Bridge
No. Of Outputs
1
Output Current
1.3A
Output Voltage
50V
Supply Voltage Range
3V To 5.5V
Driver Case Style
SOIC
No. Of Pins
16
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
620-1133-2
A3953SLBTR-T

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
A3953SLBTR-T
Manufacturer:
ALLEGRO/雅丽高
Quantity:
20 000
Allegro MicroSystems, Inc. reserves the right to make, from time to time, revisions to the anticipated product life cycle plan
for a product to accommodate changes in production capabilities, alternative product availabilities, or market demand. The
information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no respon-
sibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use.
This device is in production, however, it has been deemed Pre-End
of Life. The product is approaching end of life. Within a minimum of
6 months, the device will enter its final, Last Time Buy, order phase.
For existing customer transition, and for new customers or new appli-
cations, contact Allegro Sales.
Date of status change: January 31, 2011
Recommended Substitutions:
NOTE: For detailed information on purchasing options, contact your
local Allegro field applications engineer or sales representative.
Full-Bridge PWM Motor Driver
A3953

Related parts for A3953SLBTR-T

A3953SLBTR-T Summary of contents

Page 1

This device is in production, however, it has been deemed Pre-End of Life. The product is approaching end of life. Within a minimum of 6 months, the device will enter its final, Last Time Buy, order phase. Date of status ...

Page 2

Features and Benefits ▪ ±1.3 A continuous output current ▪ output voltage rating ▪ 5.5 V logic supply voltage ▪ Internal PWM current control ▪ Saturated sink drivers (below 1 A) ▪ Fast and slow ...

Page 3

... The A3953 is supplied in a choice of two power packages; a 16-pin dual-in-line plastic package with copper heat-sink tabs, Selection Guide Part Number A3953SB-T 16-pin DIP with exposed thermal tabs A3953SLBTR-T 16-pin SOICW with internally-fused pins Absolute Maximum Ratings Characteristic Load Supply Voltage Logic Supply Voltage ...

Page 4

A3953 ELECTRICAL CHARACTERISTICS at T (unless otherwise noted.) Characteristic Power Outputs Load Supply Voltage Range Output Leakage Current Sense Current Offset Output Saturation Voltage BRAKE = H (Forward/Reverse Mode) Output Saturation Voltage BRAKE = L (Brake Mode) Clamp Diode Forward ...

Page 5

A3953 ELECTRICAL CHARACTERISTICS (continued 5.5 V (unless otherwise noted.) Characteristic AC Timing PWM RC Fixed Off-time PWM Turn-Off Time t PWM Turn-On Time PWM Minimum On Time Propagation Delay Times Crossover Dead Time Maximum PWM Frequency f Full-Bridge ...

Page 6

A3953 ELECTRICAL CHARACTERISTICS (continued 5.5 V (unless otherwise noted. ) Characteristic Control Circuitry Thermal Shutdown Temp. Thermal Shutdown Hysteresis UVLO Enable Threshold UVLO Hysteresis Logic Supply Current Motor Supply Current (No Load) Logic Supply Voltage Range Logic Input ...

Page 7

A3953 FUNCTIONAL DESCRIPTION Internal PWM Current Control During Forward The A3953 contains a fixed and Reverse Operation. off-time pulse width modulated (PWM) current-control circuit that can be used to limit the load current to a desired value. The peak value ...

Page 8

A3953 During braking, when the MODE input is high, the peak current limit can be approximated by: ≈ I TRIP BRAKE MH CAUTION: Because the kinetic energy stored in the motor and load inertia is being converted into current, which ...

Page 9

A3953 value of t and the minimum on-time pulse t OFF occurs each time the PWM latch is reset. If the motor is not rotating (as in the case of a stepper motor in hold/detent mode, a brush dc motor ...

Page 10

A3953 Thermal protection circuitry turns off all drivers should the junction temperature reach 165°C (typical). This is intended only to protect the device from failures due to excessive junction temperatures and should not imply that output short circuits are permitted. ...

Page 11

A3953 the need to generate a variable analog voltage reference. In this case voltage on the REF input is used typically to limit the maximum load current servo applications, which require accurate positioning at low or ...

Page 12

A3953 1.27 MIN +0.25 1.52 –0.38 0.46 ±0.12 10.30±0. 16X 0.10 C 0.41 ±0.10 1.27 Copyright ©1995-2008, Allegro MicroSystems, Inc. Allegro MicroSystems, Inc. reserves the right to make, from time to time, ...

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