参数资料
型号: A3953SLBTR-T
厂商: Allegro Microsystems Inc
文件页数: 5/12页
文件大小: 0K
描述: IC MOTOR DRIVER PWM FULL 16-SOIC
标准包装: 1
应用: PWM 电机驱动器
输出数: 1
电流 - 输出: ±1.3A
电压 - 负载: 3 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: 16-SOIC(0.295",7.50mm 宽)
供应商设备封装: 16-SOIC W
包装: 标准包装
产品目录页面: 1140 (CN2011-ZH PDF)
其它名称: 620-1133-6
A3953
Full-Bridge PWM Motor Driver
ELECTRICAL CHARACTERISTICS (continued) at T J = 25°C, V BB = 5 V to 50 V, V CC = 3.0 V to
5.5 V (unless otherwise noted.)
Limits
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
AC Timing
PWM RC Fixed Off-time
PWM Turn-Off Time
t OFF RC
t PWM(OFF)
C T = 680 pF, R T = 30 k Ω , V CC = 3.3 V
Comparator Trip to Source Off,
18.3
20.4
1.0
22.5
1.5
μ s
μ s
I OUT = 25 mA
Comparator Trip to Source Off,
1.8
2.6
μ s
I OUT = 1.3 A
PWM Turn-On Time
t PWM(ON)
I RC Charge On to Source On,
0.4
0.7
μ s
I OUT = 25 mA
I RC Charge On to Source On,
0.55
0.85
μ s
I OUT = 1.3 A
PWM Minimum On Time
t ON(min)
V CC = 3.3 V, R T ≥ 12 k Ω , C T = 680 pF
V CC = 5.0 V, R T ≥ 12 k Ω , C T = 470 pF
0.8
0.8
1.4
1.6
1.9
2.0
μ s
μ s
Propagation Delay Times
t pd
I OUT = ±1.3 A, 50% to 90%:
ENABLE On to Source On
ENABLE Off to Source Off
ENABLE On to Sink On
ENABLE Off to Sink Off (MODE = L)
PHASE Change to Sink On
PHASE Change to Sink Off
PHASE Change to Source On
PHASE Change to Source Off
1.0
1.0
1.0
0.8
2.4
0.8
2.0
1.7
μ s
μ s
μ s
μ s
μ s
μ s
μ s
μ s
Crossover Dead Time
Maximum PWM Frequency
t CODT
f PWM(max)
1 k Ω Load to 25 V, V BB = 50 V
I OUT = 1.3 A
0.3
70
1.5
3.0
μ s
kHz
Continued next page…
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
4
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