A2919(2010) Ver la hoja de datos (PDF) - Allegro MicroSystems
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A2919 Datasheet PDF : 8 Pages
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A2919
Dual Full-Bridge PWM Motor Driver
ELECTRICAL CHARACTERISTICS at TA = +25°C, TJ 150°C, VBB = 45 V, VCC = 4.75 V to 5.25 V,
VREF = 5.0 V (unless otherwise noted).
Characteristic
Output Drivers (OUTA or OUTB)
Motor Supply Range
Output Leakage Current
Symbol
VBB
ICEX
Output Sustaining Voltage
Output Saturation Voltage
VCE(sus)
VCE(SAT)
Clamp Diode Leakage Current
Clamp Diode Forward Voltage
Driver Supply Current
Control Logic
Input Voltage
Input Current
Reference Voltage Range
Current Limit Threshold
(at trip point)
IR
VF
IBB(ON)
IBB(OFF)
VIN(1)
VIN(0)
IIN(1)
VREF
VREF/ VSENSE
Thermal Shutdown Temperature
Total Logic Supply Current
Total Reference Current
Fixed Off-Time
TJ
ICC(ON)
ICC(OFF)
IREF1 + IREF2
toff
Test Conditions
Min.
Limits
Typ. Max. Units
Operating
VOUT = VBB
VOUT = 0
IOUT = ±750 mA, L = 3.0 mH
Sink Driver, IOUT = +500 mA
Sink Driver, IOUT = +750 mA
Source Driver, IOUT = -500 mA
Source Driver, IOUT = -750 mA
VR = 45 V
IF = 750 mA
Both Bridges ON, No Load
Both Bridges OFF
10
—
45
V
—
< 1.0
50
μA
—
<-1.0 -50
μA
45 + VF
—
—
V
—
0.4
0.6
V
—
1.0
1.2
V
—
1.0
1.2
V
—
1.3
1.5
V
—
< 1.0
50
μA
—
1.6
2.0
V
—
20
25
mA
—
5.0
10
mA
All inputs
2.4
—
—
V
All inputs
—
—
0.8
V
VIN = 2.4 V
VIN = 0.8 V
—
<1.0
20
μA
—
- 3.0 -200
μA
1.0
—
7.5
V
I0 = I1 = 0.8 V, VREF = 1.0 V to 7.5 V
9.5
10
10.5
—
I0 = 2.4 V, I1 = 0.8 V,
VREF = 1.5 V to 7.5 V
13.5
15
16.5
—
I0 = 0.8 V, I1 = 2.4 V,
VREF = 1.5 V to 7.5 V
20.7
24.4 28.0
—
—
170
—
°C
I0 = I1 = 0.8 V, No Load
—
I0 = I1 = 2.4 V, No Load
—
VREF1 = VREF2 = 7.5 V, I0 = I1 = 2.4 V
140
RT = 56 k, CT = 820 pF
—
40
50
mA
10
12
mA
185
250
μA
46
—
μs
Allegro MicroSystems, Inc.
3
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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