A3985 Allegro MicroSystems, Inc., A3985 Datasheet - Page 6

• Manufacturer Part Number: A3985
• Description: Digitally Programmable Dual Full-Bridge MOSFET Driver
• Manufacturer: Allegro MicroSystems, Inc.

A3985
ELECTRICAL CHARACTERISTICS, continued, at T
Serial Data Timing
1
2
scale (100%) current: E
Serial Clock High Time
Serial Clock Low Time
Strobe Lead Time
Strobe Lag Time
Strobe High Time
Data Out Enable Time
Data Out Disable Time
Data Out Valid Time from SCK Falling
Data Out Hold Time from SCK Falling
Data In Set-up Time to SCK Rising
Data In Hold Time from SCK Rising
WC Set-up Time to STR Rising
WC Hold Time from STR Rising
WC Hold Time from STR Falling
For input and output current specifications, negative current is defined as coming out of (sourcing) the specified device pin.
Current Trip Point Error is the difference between actual current trip point and the target current trip point, referred to full
Characteristics
Serial Data Timing Diagram
SDO
SCK
STR
WC
SDI
t
SDOE
ITrip
Dx
t
Dx = Current data transfer block
**
STLD
*
= 100 × (I
**
= Previous data transfer block
= Undefined, usually LSB from previous transfer
t
SDIS
Symbol
TripActual
t
SDOV
t
t
t
t
t
t
t
t
t
t
t
t
t
t
SCKH
SCKL
STLD
STLG
STRH
SDOE
SDOD
SDOV
SDOH
SDIS
SDIH
SWCS
SWCH
SLWCH
D18
D18
– I
*
t
SCKH
t
TripTarget
t
SDOH
SDIH
A
= 25°C, V
) / I
FullScale %
t
SCKL
t
Dual Full-Bridge MOSFET Driver
SLWCH
Test Conditions
D17
D17
DD
= 5 V, V
*
BB
= 12 to 50 V, unless noted otherwise
Digitally Programmable
t
SWCS
D0
D0
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
Min.
150
50
50
30
30
15
10
15
50
30
–
–
–
5
*
t
STLG
t
SDOD
Typ.
t
STRH
–
–
–
–
–
–
–
–
–
–
–
–
–
–
t
SWCH
Max.
40
30
40
–
–
–
–
–
–
–
–
–
–
–
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
6