LC898300XA-MH Datasheet, PDF (4/7 Pages) ON Semiconductor – Linear Vibrator Driver IC

Timing chart
LC898300XA
Motor drive timing
The Motor is driven by EN pin, and the driving time is controlled by keeping EN pin “H”. The High speed start UP
time, driving power and Brake time can be modified by I²C setting. The initial driving frequency must be set by I²C I/F
at the center of resonance frequency of the linear vibrators, when the initial driving frequency is inadequate. The
minimum width of EN signal must be larger than the cycle of initial driving frequency setting.
EN
OUT1
OUT2
High speed
Start UP Time
Driving Time(Driving power is
adjusted by driving voltage)
Brake Time
Stand-by Control
The Stand-by mode is controlled by RSTB pin. (RSTB=”L” Æ Stand-by mode is ON.)
When the stand-by mode is “ON”, the register value is set to initial value. So, the register must be set again after the
stand-by mode is “OFF”. And, the “EN” signal and I2C command must wait over 200us after “RSTB” pin is set to “H”.
RSTB
EN
30ms
Stand-by
Driving off I²C
Set registers again
Driving on
Brake
Driving off Stand-by
This period isn t need, if the brake is not used.
EN Control
The width of EN=High should be set at least 1 driving cycle.
ex) 0x02 RESOFRQ=0x0A (175Hz) Æ (min) 5.71ms
The width of EN=Low should be kept over 30ms, if the pre-driving period is over 30ms. On the other hand,
If the pre-driving period is less than 30ms, the minimum width of EN=Low is same as the pre-driving width.
(min)30ms
EN
(min) 1 driving cycle
No.A2053-4/7