A3946KLP Allegro Microsystems Inc, A3946KLP Datasheet - Page 11

• Manufacturer Part Number: A3946KLP
• Description: IC CTRLR MOSFET 16-TSSOP
• Manufacturer: Allegro Microsystems Inc

Specifications of A3946KLP

• Applications: DC Motor Controller, Brushless (BLDC), 3 Phase
• Number Of Outputs: 1
• Voltage - Supply: 7 V ~ 60 V
• Operating Temperature: -40°C ~ 135°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Output: -
• Voltage - Load: -

A3946
Diagram C. Independent drivers. Two low-side drives.
Forward
Forward
VREF
DC Motor #1
DC Motor #2
Decay
Slow
External
Decay
Slow
+5 V
k
10
VREF
L
~FAULT
RESET
0.1 uF
VREF
IN2
DT
IN1
L
L
L
P
C2
10 μF
+5 Vref
L
Protection
VREG Undervoltage
Overtemperature
UVLOBOOT
Turn-On
Delay
VBB
P
Control
Logic
PAD
CP
2
Charge
Pump
Charge Pump
C1
0.47 μF
Bootstrap
Top-Off
Half-Bridge Power MOSFET Controller
UVLO
CP1
High Side
Low Side
Driver
Driver
I
LIM
P
P
VREG
L
GH
VREG
BOOT
GL
LGND
S
PGND
L
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
R
33
GATE
P
P
C
R
10 μF
33
REG
GATE
P
IRF2807
DC Motor
470
k
#1
M
470
k
IRF2807
DC Motor
+VBAT
#2
M
11