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| 型号： | A4970SLBTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 4/9页 |
| 文件大小： | 0K |
| 描述： | IC PWM MOTOR DVR FULL 24-SOICW |
| 特色产品： | A4970 Motor Driver IC |
| 标准包装： | 1 |
| 应用： | 直流电机驱动器，PWM 电机驱动器，步进电机驱动器 |
| 输出数： | 1 或 2 |
| 电流 - 输出： | 750mA |
| 电压 - 负载： | 7.45 V ~ 45 V |
| 电源电压： | 4.75 V ~ 5.25 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC W |
| 包装： | 标准包装 |
| 其它名称： | 620-1437-6 |
A4970
Dual Full-Bridge Motor Driver
ELECTRICAL CHARACTERISTICS Valid at T A = 25°C, T J ≤ 150°C, V BB = 45 V, V CC = 4.75 to 5.25 V, V REF = 5.0 V,
unless otherwise noted
Characteristics
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Output Drivers (OUTA or OUTB)
Motor Supply Range
V BB
7.45
–
45
V
Output Leakage Current
Output MOSFET On Resistance
Clamp Diode Leakage Current
Clamp Diode Forward Voltage
Driver Supply Current
I CEX
R DS(on)
I R
V F
I BB(ON)
I BB(OFF)
I0 = I1 = 2.4 V, V OUT = 45.0 V
V OUT = 0.0 V
Sink Driver, I OUT = 750 mA
Source Driver, I OUT = –750 mA
V R = 45 V
I F = 750 mA
Both bridges on, I0 = I1 = 0.8 V, no load
Both bridges off, I0 = I1 = 2.4 V, no load
–
–
–
–
–
–
–
–
< 1.0
< –1.0
0.3
1.0
< 1.0
0.95
5
3
50
–50
0.75
1.85
50
2
10
7.5
μ A
μ A
Ω
Ω
μ A
V
mA
mA
Control Logic
Input Voltage
Input Current
Reference Voltage Range
Reference Input Current
Current Limit Threshold
Thermal Shutdown Temperature
Total Logic Supply Current
Fixed Off-Time
V CC Undervoltage Lockout (UVLO)
Threshold
V CC Undervoltage Lockout (UVLO)
Threshold
V IN(1)
V IN(0)
I IN(1)
V REF
I REF
V REF /
V SENSE
T J
I CC(ON)
I CC(OFF)
t off
V CCUVLO
V CCUVLOHYS
All inputs
All inputs
V IN = 2.4 V
V IN = 0.8 V
Operating
V REF = 7.5 V
I0 = I1 = 0.8 V
I0 = 2.4 V, I1 = 0.8 V
I0 = 0.8 V, I1 = 2.4 V
I0 = I1 = 0.8 V, no load
I0 = I1 = 2.4 V, no load
R T = 56 k Ω , C T = 820 pF
V CC rising
2.4
–
–
–
1.5
–
9.5
13.5
25.5
–
–
–
42
–
–
–
–
<1.0
– 3.0
–
–
10
15
30
170
3.0
3.5
46
4
200
–
0.8
20
–200
7.5
150
10.5
16.5
34.5
–
7.5
7.5
50
–
–
V
V
μ A
μ A
V
μ A
–
–
–
°C
mA
mA
μ s
V
mV
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
4
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