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A3916GESTR-T

P1-P3P4-P6P7-P9P10-P11
Dual DMOS Full-Bridge Motor Driver
A3916
4
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
FUNCTIONAL BLOCK DIAGRAM
VREG
SENSE1
OUT1A
OUT1B
VBB
VCP
0.1 µF
2.7 to 15 V
IN2
CLK
IN3
IN4
FAULTn
IN1
SLEEPn
GND
DMOS H BRIDGE
DC
Motor
Control
Logic
SENSE2
OUT2A
OUT2B
DMOS H BRIDGE
DC
Motor
VBB
VBB
+
-
+
-
CHARGE PUMP
200 mV
TSD
UVLO
VBB
Dual DMOS Full-Bridge Motor Driver
A3916
5
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
ELECTRICAL CHARACTERISTICS
1,2
: Valid at T
J
= 25°C, V
BB
= 2.7 to 15 V, unless noted otherwise
Characteristics Symbol Test Conditions Min. Typ. Max. Unit
GENERAL
Load Supply Voltage Range V
BB
Operating 2.7 – 15 V
Output On Resistance
R
DS(ON,HS)
T
J
= 25°C, 500 mA, V
BB
= 5 V – 335 450 mΩ
T
J
= 25°C, 500 mA, V
BB
= 2.7 V – 335 450 mΩ
T
J
= 85°C, 500 mA, V
BB
= 5 V – 410 – mΩ
T
J
= 85°C, 500 mA, V
BB
= 2.7 V – 410 – mΩ
R
DS(ON,LS)
T
J
= 25°C, 500 mA, V
BB
= 5 V – 375 525 mΩ
T
J
= 25°C, 500 mA, V
BB
= 2.7 V – 375 525 mΩ
T
J
= 85°C, 500 mA, V
BB
= 5 V – 455 – mΩ
T
J
= 85°C, 500 mA, V
BB
= 2.7 V – 455 – mΩ
Diode Forward Voltage V
F
I = 500 mA – 0.85 1.0 V
VBB Supply Current
I
BB(2p7V)
Outputs disabled, V
BB
= 2.7 V – 2.2 4.5 mA
I
BB(15V)
Outputs disabled, V
BB
= 15 V – 3.1 4.5 mA
I
BB(SLEEP)
Sleep Mode – – 0.5 µA
CONTROL LOGIC
Logic Input Voltage, INx
V
IN(1)
2.0 – – V
V
IN(0)
– – 0.8 V
Logic Input Voltage, SLEEPn
V
IN(1)
2.0 – – V
V
IN(0)
– – 0.4 V
Logic Input Hysteresis V
HYS
100 – 500 mV
Logic Input Current I
IN
V
IN
= 3.3 V, pulldown = 100 kΩ – 33 50 µA
Fault Output Voltage V
FAULTn
Flag asserted, I
FAULTn
= 1 mA – – 200 mV
Fault Output Leakage Current I
FAULTn
V
FAULTn
= 5 V – – 1.0 µA
V
SENSE
Blank time t
BLANK
2.1 3.1 4.1 µs
V
SENSE
Trip Voltage V
TRIP
170 205 240 mV
Fixed Off-Time t
OFF
20 30 40 µs
PROTECTION CIRCUITS
Crossover Delay t
OCD
200 550 1000 ns
VBB Undervoltage Lockout V
BB(UVLO)
V
BB
rising – 2.55 2.65 V
VBB Hysteresis V
BB(UVLO,HYS)
– 125 – mV
Thermal Shutdown Temperature T
J1
150 165 180 °C
Thermal Shutdown Hysteresis ΔT
J1
– 20 – °C
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.
Dual DMOS Full-Bridge Motor Driver
A3916
6
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
CONTROL LOGIC
Table 1: DC Motor Operation
IN1 IN2 OUT1A OUT1B Function
0 0 Off Off Disabled
1 0 High Low Forward
0 1 Low High Reverse
1 1 Low Low Brake
IN3 IN4 OUT2A OUT2B Function
0 0 Off Off Disabled
1 0 High Low Forward
0 1 Low High Reverse
1 1 Low Low Brake
Table 2: Stepper Motor Operation
IN1 IN2 IN3 IN4 OUT1A OUT1B OUT2A OUT2B Function
0 0 0 0 Off Off Off Off Disabled Disabled
1 0 1 0 High Low High Low Full Step 1 ½ Step 1
0 0 1 0 Off Off High Low – ½ Step 2
0 1 1 0 Low High High Low Full Step 2 ½ Step 3
0 1 0 0 Low High Off Off – ½ Step 4
0 1 0 1 Low High Low High Full Step 3 ½ Step 5
0 0 0 1 Off Off Low High – ½ Step 6
1 0 0 1 High Low Low High Full Step 4 ½ Step 7
1 0 0 0 High Low Off Off – ½ Step 8
P1-P3P4-P6P7-P9P10-P11

A3916GESTR-T

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IC MTR DRV BIPOLAR 2.7-15V 16QFN
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