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| 型号： | A4987SLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 4/17页 |
| 文件大小： | 0K |
| 描述： | IC STEPPER MOTOR DRIVER 24TSSOP |
| 特色产品： | A498x Motor Driver Family |
| 标准包装： | 1 |
| 应用： | PWM 电机驱动器，步进电机驱动器 |
| 评估套件： | 可供 |
| 输出数： | 1 |
| 电流 - 输出： | ± 1A |
| 电压 - 负载： | 8 V ~ 35 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： | 24-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 供应商设备封装： | 24-TSSOP 裸露焊盘 |
| 包装： | 标准包装 |
| 其它名称： | 620-1345-6 |
A4987
DMOS Dual Full-Bridge PWM Motor Driver
With Overcurrent Protection
ELECTRICAL CHARACTERISTICS 1 at T A = 25°C, V BB = 35 V (unless otherwise noted)
Characteristics
Symbol
Test Conditions
Min.
Typ. 2
Max.
Units
Output Drivers
Load Supply Voltage Range
Logic Supply Voltage Range
Output On Resistance
Body Diode Forward Voltage
Motor Supply Current
Logic Supply Current
V BB
V DD
R DS(ON)
V F
I BB
I DD
Operating
During Sleep Mode
Operating
Source Driver, I OUT = –800 mA
Sink Driver, I OUT = 800 mA
Source Diode, I F = –800 mA
Sink Diode, I F = 800 mA
f PWM < 50 kHz
Operating, outputs disabled
Sleep Mode
f PWM < 50 kHz
Outputs off
Sleep Mode
8
0
3.0
–
–
–
–
–
–
–
–
–
–
–
–
–
700
700
–
–
–
–
–
–
–
–
35
35
5.5
900
900
1.3
1.3
4
2
10
8
5
10
V
V
V
m Ω
m Ω
V
V
mA
mA
μ A
mA
mA
μ A
Control Logic
Logic Input Voltage
Logic Input Current
Logic Input Pull-down
Logic Input Hysteresis
Blank Time
Fixed Off-Time
Reference Input Voltage Range
Reference Input Current
Current Trip-Level Error 3
Crossover Dead Time
V IN(1)
V IN(0)
I IN(1)
I IN(0)
R IN02
R IN12
V HYS(IN)
t BLANK
t OFF
V REF
I REF
err I
t DT
V IN = V DD ? 0.7
V IN = V DD ? 0.3
As a % of V DD
OSC = VDD or GND
R OSC = 25 k Ω
V REF = 2 V, %I TripMAX = 33.3%
V REF = 2 V, %I TripMAX = 66.7%
V REF = 2 V, %I TripMAX = 100.00%
V DD ? 0.7
–
–20
–20
–
–
5
0.7
20
23
0
–3
–
–
–
100
–
–
<1.0
<1.0
100
50
11
1
30
30
–
0
–
–
–
475
–
V DD ? 0.3
20
20
–
–
19
1.3
40
37
4
3
±15
±5
±5
800
V
V
μ A
μ A
k Ω
k Ω
%
μ s
μ s
μ s
V
μ A
%
%
%
ns
Protection
Overcurrent Protection Threshold 4
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
I OCPST
T TSD
T TSDHYS
1.1
–
–
–
165
15
–
–
–
A
°C
°C
VDD Undervoltage Lockout
VDD Undervoltage Hysteresis
V DDUVLO
V DDUVLOHYS
V DD rising
2.7
–
2.8
90
2.9
–
V
mV
1 For
input and output current specifications, negative current is defined as coming out of (sourcing) the specified device pin.
2 Typical
data are for initial design estimations only, and assume optimum manufacturing and application conditions. Performance may vary for individual
units, within the specified maximum and minimum limits.
3 V
ERR = [(V REF /8) – V SENSE ] / (V REF /8).
4 Overcurrent protection (OCP) is tested at T A = 25°C in a restricted range and guaranteed by characterization.
Allegro MicroSystems, LLC
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
4
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