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参数资料
| 型号： | A3998SETTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 4/20页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DRIVER DUAL DMOS QFN |
| 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： | ±1.5A |
| 电压 - 负载： | 9 V ~ 50 V |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN |
| 包装： | 标准包装 |
| 其它名称： | 620-1459-6 |
A3998
Dual DMOS Full Bridge Motor Driver
With Serial Port Control and Dual Regulators
ELECTRICAL CHARACTERISTICS 1,2 Valid at T J = 25°C, V BB = 50 V; unless otherwise specified
Characteristics
Load Supply Voltage Range
Bridge Output On-Resistance
VBB Pins Supply Current
VIN Pin Supply Current
Symbol
V BB
R DS(on)RG
I BB
I BBS
I IN
Test Conditions
Operating
Source driver, I OUT = –1.5 A
Sink driver, I OUT = 1.5 A
V REG regulated, I OUT = 0 mA, outputs on,
PWM = 50 kHz, Duty Cycle = 50%
Standby mode, regulator active
Min.
9
–
–
–
–
–
Typ. 3
–
0.5
0.5
5
–
5
Max.
50
–
–
10
5
8
Unit
V
Ω
Ω
mA
mA
mA
Control Logic
Logic Inputs Voltage Range
Logic Input Voltage
Logic Pins Input Current (Except
ENB1,ENB2, FRST pins)
ENB1,ENB2, FRST Pins Input Current
Input Hysteresis
Propagation Delay Time
Crossover Delay
V IO
V IO(1)
V IO(0)
I IO
I IO(1)
I IO(0)
V IOHYS
t pd
t COD
Operating
V IN = 0 to 5 V
V IN = 3.3 V
V IN = 0.8 V
PWM change to source on
PWM change to source off
PWM change to sink on
PWM change to sink off
3
V DD × 0.55
–
–20
–
–
200
350
35
350
35
300
–
–
–
<1.0
66
16
–
550
–
550
–
425
5.5
–
V DD × 0.27
20
100
40
700
1000
250
1000
250
1000
V
V
V
μ A
μ A
μ A
mV
ns
ns
ns
ns
ns
Supply Monitor
Reset Timer
t POR
70
100
130
ms
RSTN and PMON Pins Output
Voltage
RSTN and PMON Pins Output
Leakage Current
Power Monitor Threshold
Power Monitor Hysteresis
V RST
I leakage
V PM(th)
V PMHYS
I OUT = 1 mA
V OUT = 5 V
PMON pin, V BB falling
–
–
12
–
–
–
13
2
0.5
1
14
–
V
μ A
V
V
Protection Circuits
VIN Pin UVLO Threshold
VIN Pin UVLO Hysteresis
VBB Pins UVLO Threshold
VBB Pins UVLO Hysteresis
FB1 Pin UVLO Threshold
FB1 Pin UVLO Hysteresis
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
V INUV(th)
V INUVHYS
V BBUV(th)
V BBUVHYS
V FBUV(th)
V FBUVHYS
T JSD
T JSDHYS
V IN rising
V BB rising
V FB falling
–
–
6.6
0.7
698
–
155
–
2.8
100
7.1
0.9
735
100
165
20
3
–
7.6
1.1
772
–
175
–
V
mV
V
V
mV
mV
°C
°C
Continued on the next page…
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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