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A3985 Datasheet(PDF) 4 Page - Allegro MicroSystems

Part No. A3985
Description  Digitally Programmable Dual Full-Bridge MOSFET Driver
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A3985 Datasheet(HTML) 4 Page - Allegro MicroSystems

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Digitally Programmable
Dual Full-Bridge MOSFET Driver
A3985
4
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Continued on the next page...
ELECTRICAL CHARACTERISTICS
at TA = 25°C, VDD = 5 V, VBB = 12 to 50 V, unless noted otherwise
Characteristics
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Supply and Reference
Load Supply Voltage Range
VBB
12
50
V
Load Supply Current
IBB
fMCK = 4 MHz, CLOAD=1000 pF
10
mA
ENABLE = High, outputs disabled
6
mA
Load Supply Idle Current
IBBQ
Word1:Bit D18 = 0
100
μA
Logic Supply Voltage Range
VDD
3.0
5.5
V
Logic Supply Current
IDD
10
mA
Logic Supply Idle Current
IDDQ
Word1:Bit D18 = 0
300
μA
Regulator Output
VREG
IREGInt = 30 mA
11.25
13
V
Bootstrap Diode Forward Voltage
VfBOOT
IfBOOT = 10 mA
0.6
0.8
1
V
Gate Output Drive
Turn-On Rise Time
tr
CLOAD = 1000 pF, 20% to 80%
80
120
160
ns
Turn-Off Fall Time
tf
CLOAD = 1000 pF, 80% to 20%
40
60
80
ns
Turn-On Propagation Delay
tp(on)
ENABLE low to gate drive on
120
ns
Turn-Off Propagation Delay
tp(off)
ENABLE high to gate drive off
120
ns
Crossover Dead Time
tDEAD
fMCK = 4 MHz,
Word1:Bits D1 and D2 = 00
0.5
0.75
μs
Pull-Up On Resistance
RDS(on)UP IGH = –25 mA
30
40
55
Ω
Pull-Down On Resistance
RDS(on)DN IGL = 25 mA
14
19
24
Ω
Short-Circuit Current – Source1
ISC(source)
–140
–110
–80
mA
Short-Circuit Current – Sink
ISC(sink)
160
200
250
mA
GHx Output Voltage
VGHx
CBOOTx fully charged
VC–0.2
V
GLx Output Voltage
VGLx
VREG
0.2
––
V
Logic Inputs
Input Low Voltage
VIL
0.3 VDD
V
Input High Voltage
VIH
0.7 VDD
––
V
Input Hysteresis
VIHys
150
300
mV
Input Current1
IIN
–1
1
μA
Output Low Voltage
VOL
SDO, IOL= 0.5 mA
0.5
V
Output High Voltage
VOH
SDO, IOH= –0.3 mA
VDD
0.5
V
Output Leakage current1
IOleak
SDO, STR = 1, 0 V< VO< VDD
–1
1
μA


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