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PDF A3916 Data sheet ( Hoja de datos )
| Número de pieza | A3916 | |
| Descripción | Dual DMOS Full-Bridge Motor Driver | |
| Fabricantes | Allegro MicroSystems | |
| Logotipo |  |
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A3916
Dual DMOS Full-Bridge Motor Driver
FEATURES AND BENEFITS
• Wide, 2.7 to 15 V input voltage operating range
• Dual DMOS full-bridges: drive two DC motors or
one stepper motor
• Low RDS(ON) outputs
• Synchronous rectification for reduced power dissipation
• Low-current sleep mode
• Overcurrent protection
• Internal UVLO and thermal shutdown circuitry
• Integrated charge pump
• Pin-to-pin compatible with A3906
PACKAGES:
16-contact QFN
3 mm × 3 mm
(suffix ES)
DESCRIPTION
Designed for pulse-width-modulated (PWM) control of low-
voltage stepper motors and single and dual DC motors, the
A3916 is capable of output currents up to 1 A per channel and
operating voltages from 2.7 to 15 V.
The A3916 has an internal fixed off-time PWM timer that sets
a peak current based on the selection of a current sense resistor.
An output fault flag is provided that notifies the user of a TSD
or overcurrent protection event.
The A3916 is supplied in a low-profile 3 × 3 mm 16-terminal
QFN (suffix “ES”) and a low-profile 4 × 4 mm 20-terminal
QFN (suffixes “ES, -1”) both with exposed power tabs for
enhanced thermal dissipation.
20-contact QFN
4 mm × 4 mm
(suffix ES,-1)
Not to scale
SLEEPn
IN1
IN2
CINL3K
IN4
VCP
VBB
A3916
OUT1A
OUT1B
FAULTn
SENSE1
OUT2A
OUT2B
GND
SENSE2
0.1 µF
2.7 to 15 V
DC
Motor
DC
Motor
VCP
SLEEPn
IN1
IN2
CINL3K
IN4
A3916
VBB
OUT1A
OUT1B
FAULTn
GND
SENSE1
OUT2A
OUT2B
SENSE2
0.1 µF
2.7 to 15 V
Step
Motor
A3916-DS, Rev. 1
Figure 1: Typical Applications
October 6, 2016
1 page  
A3916
Dual DMOS Full-Bridge Motor Driver
ELECTRICAL CHARACTERISTICS 1,2: Valid at TJ = 25°C, VBB = 2.7 to 15 V, unless noted otherwise
Characteristics
Symbol
Test Conditions
Min.
GENERAL
Load Supply Voltage Range
Output On Resistance
Diode Forward Voltage
VBB Supply Current
CONTROL LOGIC
VBB
RDS(ON,HS)
RDS(ON,LS)
VF
IBB(2p7V)
IBB(15V)
IBB(SLEEP)
Operating
TJ = 25°C, 500 mA
TJ = 85°C, 500 mA
TJ = 25°C, 500 mA
TJ = 85°C, 500 mA
I = 500 mA
Outputs disabled, VBB = 2.7 V
Outputs disabled, VBB = 15 V
Sleep Mode
2.7
–
–
–
–
–
–
–
–
Logic Input Voltage, INx
Logic Input Voltage, SLEEPn
Logic Input Hysteresis
Logic Input Current
Fault Output Voltage
Fault Output Leakage Current
VSENSE Blank time
VSENSE Trip Voltage
Fixed Off-Time
PROTECTION CIRCUITS
VIN(1)
VIN(0)
VIN(1)
VIN(0)
VHYS
IIN
VFAULTn
IFAULTn
tBLANK
VTRIP
tOFF
VIN = 3.3 V, pulldown = 100 kΩ
Flag asserted, IFAULTn = 1 mA
VFAULTn = 5 V
2.0
–
2.0
–
100
–
–
–
2.1
170
20
Crossover Delay
VBB Undervoltage Lockout
VBB Hysteresis
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
tOCD
VBB(UVLO)
VBB(UVLO,HYS)
TJ1
ΔTJ1
VBB rising
200
–
–
150
–
1 Typical data is for design information only.
2 Specified limits are tested at a single temperature and assured over operating temperature range by design and characterization.
Typ.
–
335
410
375
455
0.85
2.2
3.1
–
–
–
–
–
–
33
–
–
3.1
205
30
550
2.55
125
165
20
Max.
15
450
–
525
–
1.0
4.5
4.5
0.5
–
0.8
–
0.4
500
50
200
1.0
4.1
240
40
1000
2.65
–
180
–
Unit
V
mΩ
mΩ
mΩ
mΩ
V
mA
mA
µA
V
V
V
V
mV
µA
mV
µA
µs
mV
µs
ns
V
V
°C
°C
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
5
5 Page 
A3916
Dual DMOS Full-Bridge Motor Driver
Revision History
Number
–
1
Date
September 21, 2016
October 6, 2016
Description
Initial release
Updated Features and Benefits (page 1); corrected Selection Guide (page 2)
Copyright ©2016, Allegro MicroSystems, LLC
Allegro MicroSystems, LLC reserves the right to make, from time to time, such departures from the detail specifications as may be required to
permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that
the information being relied upon is current.
Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of
Allegro’s product can reasonably be expected to cause bodily harm.
The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, LLC assumes no responsibility for its
use; nor for any infringement of patents or other rights of third parties which may result from its use.
For the latest version of this document, visit our website:
www.allegromicro.com
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet A3916.PDF ] | |
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