A3944KLPTR-T Allegro Microsystems Inc, A3944KLPTR-T Datasheet - Page 19

• Manufacturer Part Number: A3944KLPTR-T
• Description: IC PREDRIVER MOSFET 6CH TSSOP
• Manufacturer: Allegro Microsystems Inc

Specifications of A3944KLPTR-T

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

A3944
Serial Register Definition*
Gate Select Register
G[5..0]
Fault Mask Register
K[5..0]
OLM
Gate Select
Fault Mask
Channel Fault Config
Fault0
Fault1
*Power on reset value shown below each input register bit.
Control bits for each of the six channels.
G0 corresponds to channel 0, G1 to channel 1 etc.
If RESETN is high and no faults are present on
the channel then when the Gx bit for a channel is
set to 1 the GATx output will be high
Fault mask bits for each of the six channels.
K0 corresponds to channel 0, K1 to channel 1 etc.
When the Kx bit for a channel is set to 1 all faults
on that channel are ignored and no faults are
reported for that channel.
Open load fault mask for all channels where
NPD=1. If the NPD bit is set to 1 on a channel
and OLM is set to 1 then the open load diagnostic
is disabled for that channel.
FF
FF
1
0
0
1
1
1
5
ADR2 ADR1 ADR0
UV
UV
UV
UV
1
0
1
4
LR
LR
1
0
0
1
1
3
OT
OT
OT
OT
1
1
1
2
RT1
FR
FR
1
0
0
0
0
1
1
RT0
1
0
0
0
0
0
0
0
Automotive, Low Side FET Pre-Driver
0
0
0
0
9
0
0
0
0
Fault0/Fault1 Registers
FF
UV
OT
FR
CxSG
CxSB
CxOL
LR
C2SG C2SB C2OL C1SG C1SB C1OL C0SG C0SB C0OL
C5SG C5SB C5OL C4SG C4SB C4OL C3SG C3SB C3OL
NPD
8
0
0
0
0
0
TOF1
7
0
0
0
0
0
Logic 1 if any faults have been detected since the
last fault reset.
Logic 1 if any VDD or VREG undervoltage faults
have been detected since the last fault reset.
Logic 1 if a logic reset has occurred since the last
register read. A logic reset is caused by a power-
on-reset or by taking the RESETN input low.
Logic 1 if an overtemperature fault has been
detected since the last fault reset.
Fault register identifier.
Logic 0 for Fault0 register,
logic 1 for Fault1 register.
Logic 1 if channel short to ground detected.
Where x is channel number.
Logic 1 if channel short to battery detected.
Where x is channel number.
Logic 1 if channel open load detected.
Where x is channel number.
TOF0 TON1 TON0
OLM
6
0
0
0
0
0
G5
K5
5
0
0
0
0
0
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
G4
K4
4
0
0
0
0
0
SB2
G3
K3
3
0
0
0
0
0
SB1
G2
K2
2
0
0
0
0
0
SB0
G1
K1
1
0
0
0
0
0
SG
G0
K0
0
0
0
0
0
0
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