参数资料
型号: A4979GLPTR-T
厂商: Allegro Microsystems Inc
文件页数: 4/44页
文件大小: 0K
描述: IC MOTOR DRVR MICRO STEP 28TSSOP
特色产品: A4979 Series
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
评估套件: 可供
输出数: 1
电流 - 输出: 1.5A
电压 - 负载: 7 V ~ 50 V
电源电压: 3 V ~ 5.5 V
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 28-SOIC(0.173",4.40mm 宽)裸露焊盘
供应商设备封装: 28-TSSOP 裸露焊盘
包装: 标准包装
其它名称: 620-1463-6
A4979
Microstepping Programmable Stepper Motor Driver
With Stall Detect and Short Circuit Protection
Pin-out Diagram
SENSA
STRn
DIR
OAP
O S C
SDI
AGND
1
2
3
4
5
6
7
28
27
26
25
24
23
22
VBBA
RESETn
ENABLE
OAM
C P 2
CP1
VCP
REF
SCK
8
9
Ref
Reg
21
20
PGND
VREG
VDD
OBP
MS1
MS0
SENSB
10 VDD
11
12
13
14
19
18
17
16
15
STEP
OBM
SDO
DIAG
VBBB
Terminal List Table
Name
AGND
CP1
CP2
DIAG
DIR
ENABLE
MS0
MS1
OAM
OAP
OBM
OBP
OSC
PAD
Number
7
23
24
16
3
26
13
12
25
4
18
11
5
Description
Analog reference ground
Charge pump capacitor terminal
Charge pump capacitor terminal
Diagnostic output
Direction select input
Bridge enable input
Microstep select input
Microstep select input
Bridge A negative output
Bridge A positive output
Bridge B negative output
Bridge B positive output
Oscillator input
Exposed pad for enhanced thermal
dissipation; connect to ground
Name
REF
RESETn
SCK
SDI
SDO
SENSA
SENSB
STEP
STRn
VBBA
VBBB
VCP
VDD
VREG
Number
8
27
9
6
17
1
14
19
2
28
15
22
10
20
Description
Reference input voltage
Chip reset
Serial data clock
Serial data input
Serial data output
Current sense node – bridge A
Current sense node – bridge B
Step input
Serial data strobe
Motor supply – bridge A
Motor supply – bridge B
Above supply voltage
Logic Supply
Regulated voltage
PGND
21
Power ground
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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