参数资料
型号: A3977SLPTR
厂商: Allegro Microsystems Inc
文件页数: 16/19页
文件大小: 0K
描述: IC MOTOR DRVR PWM DUAL 28TSSOP
标准包装: 4,000
应用: 步进电机驱动器
输出数: 1
电流 - 输出: ±2.5A
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: 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: 带卷 (TR)
A3977
Microstepping DMOS Driver with Translator
Terminal List
Terminal
LP
ED
Name
GND
SENSE 1
HOME
DIR
OUT 1A
NC
PFD
RC 1
GND
AGND
REF
RC 2
LOGIC SUPPLY
NC
OUT 2A
MS 2
MS 1
SENSE 2
GND
LOAD SUPPLY 2
SR
RESET
OUT 2B
NC
STEP
V REG
PGND
GND
V CP
CP 1
CP 2
NC
OUT 1B
ENABLE
SLEEP
LOAD SUPPLY 1
Terminal Description
Analog and power ground
Sense resistor for bridge 1
Logic output
Logic Input
DMOS H bridge 1 output A
No (internal) connection
Mixed decay setting
Analog Input for ? xed offtime – bridge 1
Analog and power ground
Analog ground
Gm reference input
Analog input for ? xed offtime – bridge 2
V DD , the logic supply voltage
No (internal) connection
DMOS H bridge 2 output A
Logic input
Logic input
Sense resistor for bridge 2
Analog and power ground
V BB2 , the load supply for bridge 2
Logic input
Logic input
DMOS H bridge 2 output B
No (internal) connection
Logic input
Regulator decoupling
Power ground
Analog and power ground
Reservoir capacitor
Charge pump capacitor
Charge pump capacitor
No (internal) connection
DMOS H bridge 1 output B
Logic input
Logic input
V BB1 , the load supply for bridge 1
(TSSOP)
1
2
3
4
5
6
7*
8
9
10
11
12
13
14
15
16
17
18
19
20
21*
22
23
24
25
26
27
28
(PLCC)
44, 1, 2
3
4
5
6
7, 8
9
10
11, 12, 13
14
15
16
17
18
19
20
21
22, 23, 24
25
26
27
28
29, 30
31
32
33, 34, 35
36
37
38
39
40
41
42
43
* AGND and PGND on the TSSOP package must be connected together externally.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
16
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