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参数资料
| 型号： | A3986SLDTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 16/17页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER MICROSTEPPING 38-TSSOP |
| 产品变化通告： | A3986SLDTR-T NRND Status 08/Feb/2012 |
| 标准包装： | 1 |
| 应用： | 步进电机驱动器，2 相 |
| 输出数： | 2 |
| 电压 - 负载： | 12 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： | 38-TFSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 38-TSSOP |
| 包装： | 标准包装 |
| 产品目录页面： | 1141 (CN2011-ZH PDF) |
| 其它名称： | 620-1166-6 |
A3986
Dual Full-Bridge MOSFET Driver
with Microstepping Translator
Pin-out Diagram
C2A 1
GH2A 2
S2A 3
GL2A 4
38 C2B
37 GH2B
36 S2B
35 GL2B
Terminal List Tabl e
NC 5
VREG 6
VBB 7
GL1A 8
S1A 9
GH1A 10
C1A 11
C1B 12
GH1B 13
S1B 14
GL1B 15
LSS1 16
SENSE1 17
SR 18
ENABLE 19
Control
Logic
Translator
34 NC
33 LSS2
32 SENSE2
31 PFD1
30 DIR
29 MS2
28 MS1
27 PFD2
26 STEP
25 VDD
24 NC
23 OSC
22 RESET
21 REF
20 GND
Number
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
Name
C2A
GH2A
S2A
GL2A
NC
VREG
VBB
GL1A
S1A
GH1A
C1A
C1B
GH1B
S1B
GL1B
LSS1
SENSE1
SR
ENABLE
GND
REF
RESET
OSC
NC
VDD
STEP
PFD2
MS1
MS2
DIR
PFD1
SENSE2
LSS2
NC
GL2B
S2B
GH2B
C2B
Description
Phase 2 bootstrap capacitor drive A connection
Phase 2 high-side gate drive A
Phase 2 motor connection A
Phase 2 low-side gate drive A
No internal connection
Regulator decoupling capacitor connection
Motor supply voltage
Phase 1 low-side gate drive A
Phase 1 motor connection A
Phase 1 high-side gate drive A
Phase 1 bootstrap capacitor drive A connection
Phase 1 bootstrap capacitor drive B connection
Phase 1 high-side gate drive B
Phase 1 motor connection B
Phase 1 low-side gate drive B
Phase 1 low-side source connection
Phase 1 bridge current sense input
Synchronous rectification enable
Output enable
Ground
Reference voltage
Reset input
Oscillator input, ROSC resistor connection
No internal connection
Logic supply voltage
Step input
Percent Fast Decay input 2
Microstep Select input 1
Microstep Select input 2
Direction input
Percent Fast Decay input 1
Phase 2 bridge current sense input
Phase 2 low-side source connection
No internal connection
Phase 2 low-side gate drive B
Phase 2 motor connection B
Phase 2 high-side gate drive B
Phase 2 bootstrap capacitor drive B connection
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
15
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