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参数资料
| 型号： | MC34921AER2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 10/36页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DRVR PWM DC DUAL 64LQFP |
| 标准包装： | 1,500 |
| 应用： | DC 电机驱动器，步进电机驱动器，H 桥式 |
| 输出数： | 2 |
| 电流 - 输出： | ±4.5A |
| 电压 - 负载： | 0 V ~ 38 V |
| 电源电压： | 4.8 V ~ 5.2 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-LQFP 裸露焊盘 |
| 供应商设备封装： | 64-LQFP EP（10x10） |
| 包装： | 带卷 (TR) |
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STATIC ELECTRICAL CHARACTERISTICS
Table 3. Static Electrical Characteristics (continued)
Characteristics noted under conditions 16 V ≤ B+ ≤ 34 V, 0 ° C ≤ T A ≤ 70 ° C, and 0 ° C ≤ T J ≤ 100 ° C unless otherwise noted.
Typical values noted reflect the approximate parameter means at T A = 25°C under nominal conditions unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
Motor Drivers in DC Mode (cont)
Output MOSFET Leakage Current
I DSS
μ A
V GS = 0.0 V, V O = 0.0 V or 20 V
–
0.1
± 40
Current Limit Maximum Duty Cycle (9)
Current Limit Pulse Width (9)
IDC LIMIT
I LIMITPW
1.0
0.5
2.0
1.5
4.0
6.0
%
μ s
Motor Driver C in Step Mode
Switch Voltage Drop, Output to Ground
V SDROP
V
I STEP = 0.375 A, GND to Output
Step Motor Current Limit
B+ = 20 V
Voltage at Which Internal Clamp Activates
I DSS = 1.0 mA, B+ = 20 V
Tested Maximum High-Voltage Leakage Current
V S = V CLAMP +4.0
Any Step Driver Output Leakage Current to Ground
B+ = 20 V, V S = 20 V
I STEP (LIMIT)
V CLAMP
I BREAKDOWN
I LEAKAGE
–
1.0
44
–
–
–
–
51
0.5
0.1
1.5
2.0
59
40
40
A
V
μ A
μ A
Current Limit Maximum Duty Cycle
Current Limit Pulse Width
td ILIMIT
I LIMITPW
5.0
5
11
10
15
20
%
μ s
V b Charge Pump
Boost Voltage
V b
V
I B = 0.5 mA
B + +10
B + +11.5
B + +15
External N-FET Gate Drive Output
GATEOUT High Output
V OH2
V
I OH = 4.0 mA
I OH = 200 μ A
GATEOUT Low Output
I OL = -200 μ A
V OL
V b - 6.0
V b - 0.3
–
V b - 2.5
V b - .1
0.1
V b
V b
0.3
V
Notes
9. Motor driver A, B, C Top Side only. For C Bottom Side, see Motor Driver C in Step Mode: Current Limit Maximum Duty Cycle and Current
Limit Pulse Width
34921
Analog Integrated Circuit Device Data
10
Freescale Semiconductor
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