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A3955SLBTR-T

更新时间： 2024-02-10 10:27:03

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器电机
页数	文件大小	规格书
13页	423K
描述
Full-Bridge PWM Microstepping Motor Driver

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A3955SLBTR-T 数据手册

A3955

Full-Bridge PWM Microstepping Motor Driver

ELECTRICAL CHARACTERISTICS (continued) at T_A= 25°C, V_BB= 5 V to 50 V, V_CC= 4.5 V to

5.5 V (unless otherwise noted. )

Limits

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Control Circuitry (cont’d)

Thermal Shutdown Temp.

T_J

—

165

—

°C

Thermal Shutdown Hysteresis

∆T_J

AC Timing

PWM RC Fixed Off-time

PWM Turn-Off Time

t_{OFF RC}

C_T= 470 pF, R_T= 43 kΩ

18.2

—

20.2

1.0

22.3

1.5

μs

t_PWM(OFF)

Current-Sense Comparator Trip

to Source OFF, I_OUT= 100 mA

Current-Sense Comparator Trip

to Source OFF, I_OUT= 1.5 A

—

1.4

0.4

2.5

0.7

μs

PWM Turn-On Time

t_PWM(ON)

I_RCCharge ON to Source ON,

_OUT= 100 mA

I_RCCharge ON to Source ON,

_OUT= 1.5 A

V_CC= 5.0 V, R_T≥ 43 kΩ, C_T= 470 pF

_OUT= 100 mA

1 kΩ Load to 25 V

—

0.55

1.6

0.85

2.2

PWM Minimum On Time

Crossover Dead Time

t_ON(min)

t_CODT

1.0

0.3

1.5

3.0

μs

Allegro MicroSystems, Inc.

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

1 2 3 456 7 8...13

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