A4931METTR-T Allegro Microsystems Inc, A4931METTR-T Datasheet - Page 3

• Manufacturer Part Number: A4931METTR-T
• Description: IC DC MOTOR PREDRIVER 3PH 28QFN
• Manufacturer: Allegro Microsystems Inc

Specifications of A4931METTR-T

• Applications: DC Motor Driver, Brushless (BLDC), 3 Phase
• Number Of Outputs: 1
• Voltage - Supply: 8 V ~ 33 V
• Operating Temperature: -20°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 28-VFQFN Exposed Pad
• Device Type: Full Bridge
• Output Resistance: 28ohm
• Input Delay: 3ms
• Output Delay: 3ms
• Supply Voltage Range: 8V To 37.5V
• Driver Case Style: QFN
• No. Of Pins: 28
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Voltage - Load: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 620-1214-2

A4931
Terminal List
Number
System
Logic
10
11
12
13
14
1
2
3
4
5
6
7
8
9
0.1 μF
2 kΩ
HALL
HALL
HALL
V
IN
SENSE
0.1 μF
HBIAS
Name
GND
HB -
HC+
VBB
VCP
GLC
HA+
HA -
HB+
CP1
CP2
HC-
BRAKEZ
ENABLE
HBIAS
GND
CLD
HA+
HB+
HC+
FG1
FG2
HA-
HB-
HC-
DIR
Hall input A
Hall input A
Hall input B
Hall input B
Hall input C
Hall input C
Ground
Hall bias power supply output
Charge pump capacitor terminal
Charge pump capacitor terminal
Supply voltage
Reservoir capacitor terminal
Sense resistor connection
Low side gate drive C
Commun-
Detect
ication
Lock
Logic
Description
VREG
FG1
Control
Logic
Functional Block Diagram
OVP
3-Phase Brushless DC Motor Pre-Driver
VCP
CHARGE PUMP
DRIVE
GATE
0.1 μF
VREG
Number
200 mV
15
16
17
18
19
20
21
22
23
24
25
26
27
28
SENSE
VCP
GHA
GHB
GHC
GLC
VBB
GLB
GLA
SA
SB
SC
ENABLE
BRAKEZ
Name
GHC
GHB
GHA
GLB
GLA
FG1
FG2
CLD
DIR
SC
SB
SA
0.1 μF
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
Low side gate drive B
Low side gate drive A
High side gate drive C
High side source connection C
High side gate drive B
High side source connection B
High side gate drive A
High side source connection A
FG 1 speed control output (3 Φ inputs)
FG 2 speed control output (ΦA input)
Locked rotor detect timing capacitor
Logic input – motor direction
Logic input – external PWM control
Logic input – motor brake (active low)
R
SENSE
Description
V
IN
3