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| 型号： | A4950KLJTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 3/9页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DVR FULL-BRIDGE 8-SOIC |
| 标准包装： | 1 |
| 应用： | 直流电机驱动器，PWM 电机驱动器 |
| 评估套件： | * |
| 输出数： | 1 |
| 电流 - 输出： | 3.5A |
| 电压 - 负载： | 8 V ~ 40 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm Width）裸露焊盘 |
| 供应商设备封装： | 8-SOICN 裸露焊盘 |
| 包装： | 标准包装 |
| 其它名称： | 620-1470-6 |
A4950
Full-Bridge DMOS PWM Motor Driver
ELECTRICAL CHARACTERISTICS Valid for Temperature Range E version at T J = 25°C and for Temperature Range K
version at T J = –40°C to 150°C, V BB = 8 to 40 V , unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
General
Load Supply Voltage Range
V BB
8
–
40
V
R DS(on) Sink + Source Total
Load Supply Current
Body Diode Forward Voltage
R DS(on)
I BB
V f
I OUT = |2.5 A|, T J = 25°C
I OUT = |2.5 A|, T J = 150°C
f PWM < 30 kHz
Low Power Standby mode
Source diode, I f = –2.5 A
Sink diode, I f = 2.5 A
–
–
–
–
–
–
0.6
1.1
10
–
–
–
0.8
1.5
20
10
1.5
1.5
Ω
Ω
mA
μ A
V
V
Logic Inputs
V IN(1)
2.0
–
–
V
Logic Input Voltage Range
V IN(0)
V IN(STANDBY) Low Power Standby mode
–
–
–
–
0.8
0.4
V
V
Logic Input Current
I IN(1)
I IN(0 )
V IN = 2.0 V
V IN = 0.8 V
–
–
40
16
100
40
μ A
μ A
Logic Input Pull-Down Resistance
Input Hysteresis
RR
R LOGIC(PD) V IN = 0 V = IN1 = IN2
V HYS
–
–
50
250
–
550
k Ω
mV
Timing
Crossover Delay
V REF Input Voltage Range
t COD
V REF
V REF / I SS , V REF = 5 V
50
0
9.5
–
–
–
500
5
10.5
ns
V
V/V
Current Gain
Blank Time
Constant Off-time
Standby Timer
Power-Up Delay
A V
t BLANK
t off
t st
t pu
V REF / I SS , V REF = 2.5 V
V REF / I SS , V REF = 1 V
IN1 = IN2 < V IN(STANDBY)
9.0
8.0
2
16
–
–
–
–
3
25
1
–
10.0
10.0
4
34
1.5
30
V/V
V/V
μ s
μ s
ms
μ s
Protection Circuits
UVLO Enable Threshold
UVLO Hysteresis
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
V BBUVLO
V BBUVLOhys
T JTSD
T TSDhys
V BB increasing
Temperature increasing
Recovery = T JTSD – T TSDhys
7
–
–
–
7.5
500
160
15
7.95
–
–
–
V
mV
°C
°C
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
3
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