A4980
Automotive, Programmable Stepper Driver
ELECTRICAL CHARACTERISTICS1,2 Valid at TJ = –40°C to 150°C, VBB = 6 to 28 V, VDD = 3.3 V; unless otherwise noted
Characteristics
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Supplies
Load Supply Voltage Range3
Load Supply Quiescent Current
Functional
VBB
Outputs Driving
ENABLE = 0
IBBQ
Sleep mode
0
–
50
V
3.3
–
VBBOV
V
–
–
4
mA
–
1
10
μA
Logic Supply Voltage Range
Logic Supply Quiescent Current
VDD
IDDQ
ENABLE = 0
Sleep mode
3
–
5.5
V
–
–
5
mA
–
4
15
μA
Charge Pump Voltage
VCP
With repect to VBB, VBB >7.5 V, ENABLE = 0,
RESETn = 1
–
6.7
–
V
Internal Regulator Voltage
Internal Regulator Dropout Voltage
Motor Bridge Output
VREG
VREGDO
ENABLE = 0, RESETn = 1, VBB > 7.5 V
ENABLE = 0, RESETn = 1, VBB > 3.5 V
–
7.2
–
V
–
100
200
mV
High-Side On-Resistance
High-Side Body Diode Forward
Voltage
RONH
VFH
VBB = 13.5 V, IOUT = –1 A, TJ = 25°C
VBB = 13.5 V, IOUT = –1 A, TJ = 150°C
VBB = 7 V, IOUT = –1 A, TJ = 25°C
IF = 1 A
–
500
600
mΩ
–
900
1100
mΩ
–
625
750
mΩ
–
–
1.4
V
Low-Side On-Resistance
Low-Side Body Diode Forward
Voltage
RONL
VFL
VBB = 13.5 V, IOUT = 1 A, TJ = 25°C
VBB = 13.5 V, IOUT = 1 A, TJ = 150°C
VBB = 7 V, IOUT = 1 A, TJ = 25°C
IF = –1 A
–
500
600
mΩ
–
900
1100
mΩ
–
625
750
mΩ
–
–
1.4
V
Output Leakage Current
Current Control
ENABLE = 0, RESETn = 1, VO = VBB
ILO
ENABLE = 0, RESETn = 1, VO = 0 V
ENABLE = 0, RESETn = 0, VO = VBB
ENABLE = 0, RESETn = 0, VO = 0 V
–120
–65
–
μA
–200
–120
–
μA
–
<1.0
20
μA
–20
<1.0
–
μA
Internal Oscillator Frequency
OSC = AGND
fOSC
51 kΩ from OSC to VDD
3.2
4
4.8
MHz
3.6
–
4.4
MHz
External Oscillator Frequency Range
Blank Time4
Off-Time (In Fixed Off-Time Mode)4
PWM Frequency (In Fixed Frequency
Mode)4
fEXT
tBLANK
tOFF
fPWM
Default Blank-Time
Default Off-Time
Default PWM Frequency
3
–
5
MHz
–
1500
–
ns
–
44
–
μs
–
16.7
–
kHz
Fast Decay Time4
Reference Input Voltage
Internal Reference Voltage
tFAST
VREF
VREFint
Default Fast Decay Time
REF tied to VDD
–
8
–
μs
0.8
–
2
V
1.1
1.2
1.3
V
Continued on the next page…
Allegro MicroSystems, Inc.
4
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com