A3946KLPTR-T Allegro Microsystems Inc, A3946KLPTR-T Datasheet - Page 3

• Manufacturer Part Number: A3946KLPTR-T
• Description: IC,Motor Controller,BCDMOS,TSSOP,16PIN
• Manufacturer: Allegro Microsystems Inc

Specifications of A3946KLPTR-T

• 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: Lead free / RoHS Compliant
• Current - Output: -
• Voltage - Load: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 620-1295-2; A3946KLPTR-T

A3946
Control Logic Table
IN1
X
0
0
1
1
0
0
1
1
L
k
VREF
10
R
DEAD
IN2
X
0
1
0
1
0
1
0
1
L
~FAULT
RESET
0.1 uF
X7R
10 V
VREF
IN2
DT
IN1
R
R
R
R
DEAD
DEAD
DEAD
DEAD
DT Pin
VREF
VREF
VREF
VREF
L
L
L
X
- LGND
- LGND
- LGND
- LGND
P
C2
0.47 uF, X7R
V rated to VBAT
+5 Vref
L
Protection
VREG Undervoltage
Overtemperature
UVLOBOOT
Functional Block Diagram
Turn-On
Delay
RESET
0
1
1
1
1
1
1
1
1
VBB
P
Control
GH
Logic
H
H
H
Z
L
L
L
L
L
CP2
Charge
PAD
Pump
Half-Bridge Power MOSFET Controller
Charge Pump
C1
0.47 uF, X7R
V rated to VBAT
Bootstrap
Top-Off
UVLO
GL
Z
H
H
H
L
L
L
L
L
CP1
Sleep mode
Low-side FET ON following dead time
All OFF
All OFF
High-side FET ON following dead time
All OFF
Low-side FET ON
High-side FET ON
CAUTION: High-side and low-side FETs ON
High Side
Low Side
Driver
Driver
I
LIM
P
VREG
L
GH
VREG
BOOT
GL
PGND
LGND
S
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
Function
L
C
R
BOOT
GATE
R
GATE
P
P
C
REG
+VBAT
P
3