MLX90283 Datasheet, PDF (4/10 Pages) Melexis Microelectronic Systems – BLDC Vibration Motor Driver

MLX90283
BLDC Vibration Motor Driver
6 General Electrical Specifications
DC Operating Parameters T_J = 25^oC, V_DD = 3V (unless otherwise specified)
Parameter
Supply Voltage
Symbol Test Conditions
VDD
Operating
Min Typ Max Units
1.8 3
3.6 V
Supply Current
IDD
No load between OUT1/OUT2
2.1 3.2 mA
Output ON Resistance ( Full Bridge) RON
TJ = 25°C
TJ = 85°C
2.3 4
Ω
2.7 5
Ω
“Active Start” Detection Period
TON
Fixed magnetic field direction
75
150 170 ms
“Active Start” Frequency
FAS
See Note 3
8
13
20
Hz
“Active Start” Duty Cycle
DAS
See Note 4
87.5
%
Freewheel Delay
TFW
60
92
140 µs
Sensing Propagation Delay
TSENSE
See Note 5
36
µs
Thermal Protection Shutdown
TSD
See Note 6
170
°C
Thermal Protection Release
TREL
See Note 6
160
°C
Package Thermal Resistance
Single layer (1S0P) PCB
RTHj-a
Multi-layer (1S2P) PCB
250
78
°C/W
Table 3: Electrical specifications
Note 3: The Active Start Frequency is determined as follow:
1
F
AS
=
T
AS _ FW
+
T
AS
_
RV
Where:
TAS_FW is the Active Start forward driving duration
TAS_RV is the Active Start reverse driving duration
Note 4: The Active Start Duty Cycle represents the percentage of forward driving compared to the total Active Start period:
T
D = _{T + T AS(%)}
AS _ FW
AS _ FW
AS _ RV
Where:
TAS_FW is the Active Start forward driving duration
TAS_RV is the Active Start reverse driving duration
Note 5: The sensing propagation delay represents the delay from the magnetic field change (B>BOP or B<BRP) to the beginning of the
output change.
Note 6: Guarantied by design
7 Magnetic Characteristics
DC Operating Parameters T_J = 25^oC, V_DD = 3V (unless otherwise specified)
Parameter
Operate point
Symbol Min Typ Max Units
BOP
0
2
5
mT
Release point
BRP
-5
-2
0
mT
Hysteresis
BHYST
1
4
8
mT
Table 4: Magnetic specifications
8 Output Behaviour versus Magnetic Pole
Parameter
Test conditions
OUT1
South pole
B > BOP
High
North pole
B < BRP
Low
Table 5: Output behaviour versus magnetic pole
OUT2
Low
High
Note : The magnetic pole is applied facing the branded side of the package
3901090283
Rev 001
Page 4 of 10
Datasheet
October/07