A3946KLP Allegro Microsystems Inc, A3946KLP Datasheet - Page 9

• 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 A. Dependent drivers. Unidirectional motor control with braking and dead time. T
IN
Brake
VREF
Forward
External
L
+5 V
k
10
R
15.8 k
DEAD
IN
L
~FAULT
RESET
0.1 uF
VREF
IN2
DT
IN1
L
L
L
P
C2
10 μF
+5 Vref
Application Block Diagrams
L
Protection
VREG Undervoltage
Overtemperature
UVLOBOOT
Turn-On
Delay
VBB
P
Control
Logic
CP
2
Charge
Half-Bridge Power MOSFET Controller
Pump
Charge Pump
C1
0.47 μF
Bootstrap
Top-Off
UVLO
CP1
High Side
Low Side
Driver
Driver
I
LIM
P
VREG
L
DEAD
GH
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
VREG
BOOT
GL
LGND
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
PGND
S
= 1 μs; Q
0.47 μF
C
33
R
BOOT
L
GATE
R
33
GATE
P
TOTAL
IRF2807
IRF2807
C
10 μF
REG
P
470
k
= 160 nC.
+VBAT
M
P
DC
Motor
9