参数资料
型号: MC34921AE
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: 800
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: 散装
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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