A3979SLP Allegro Microsystems Inc, A3979SLP Datasheet - Page 13

• Manufacturer Part Number: A3979SLP
• Description: IC DRIVER MICROSTEPPING 28-TSSOP
• Manufacturer: Allegro Microsystems Inc

Specifications of A3979SLP

• Applications: Stepper Motor Driver
• Number Of Outputs: 1
• Current - Output: ±2.5A
• Voltage - Load: 8 V ~ 35 V
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-TSSOP Exposed Pad, 28-eTSSOP, 28-HTSSOP
• Operating Current: 12mA
• Operating Temperature Classification: Commercial
• Package Type: TSSOP EP
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

A3979
Terminal List Table
Number
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
11
1
2
3
4
5
6
7
8
9
¯ E ¯ ¯ N ¯ ¯ A ¯ ¯ B ¯ ¯ L ¯ ¯ E ¯
SENSE1
SENSE2
1OUT1B
¯ R ¯ ¯ E ¯ ¯ S ¯ ¯ E ¯ ¯ T ¯
OUT2B
¯ S ¯ ¯ L ¯ ¯ E ¯ ¯ E ¯ ¯ P ¯
OUT1A
OUT2A
DMOS Microstepping Driver with Translator
HOME
AGND
PGND
VREG
Name
VBB2
STEP
VBB1
PFD
RC1
REF
RC2
VDD
MS2
MS1
VCP
CP1
CP2
DIR
SR
Sense resistor for Bridge 1
Logic Output
Logic input
Output A for Bridge 1
Mixed decay setting
Analog input for fixed off-time for Bridge 1
Analog Ground
Current trip reference voltage input
Analog input for fixed off-time for Bridge 2
Logic supply
Output A for Bridge 2
Logic input
Logic input
Sense resistor for Bridge 2
Load supply for Bridge 2
Logic input
Logic input
Output B for Bridge 2
Logic input
Regulator decoupling
Power Ground
Reservoir capacitor
Charge pump capacitor 1
Charge pump capacitor 2
Output B for Bridge 1
Logic input
Logic input
Load supply for Bridge 1
Description
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
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