BU24032GW Datasheet, PDF (16/23 Pages) Rohm – u - step System Lens Driver for Digital Still Cameras

BU24032GW
Datasheet
●Operational Notes
1) Absolute maximum ratings
If applied voltage, operating temperature range, or other absolute maximum ratings are exceeded, the LSI may be
damaged. Do not apply voltages or temperatures that exceed the absolute maximum ratings. If you expect that any
voltage or temperature could be exceeding the absolute maximum ratings, take physical safety measures such as
fuses to prevent any conditions exceeding the absolute maximum ratings from being applied to the LSI.
2) GND potential
The voltage of the ground pin must be the lowest voltage of all pins of the IC at all operating conditions. Ensure that no
pins are at a voltage below the ground pin at any time, even during transient condition.
3) Thermal design
Use a thermal design that allows for a sufficient margin by taking into account the permissible power dissipation (PD) in
actual operating conditions.
4) Short circuit between pins and malfunctions
Ensure that when mounting the IC on the PCB the direction and position are correct. Incorrect mounting may result in
damaging the IC. Avoid nearby pins being shorted to each other especially to ground. Inter-pin shorts could be due to
many reasons such as metal particles, water droplets (in very humid environment) and unintentional solder bridge
deposited in between pins during assembly to name a few.
5) Operation in strong magnetic field
Operating the IC in the presence of a strong electromagnetic field may cause the IC to malfunction.
6) Power ON sequence
To turn ON the DVDD, be sure to reset at CMD_RS register.
7) Thermal shutdown
The IC incorporates a built-in thermal shutdown circuit, which is designed to turn off the IC when the internal
temperature of the IC reaches a specified value. It is not designed to protect the IC from damage or guarantee its
operation. Do not continue to operate the IC after this function is activated. Do not use the IC in conditions where this
function will always be activated.
8) PI drive circuit
The output voltage of PIOUT1 should not exceed the voltage of the power supply voltage DVDD.
The output voltage of PIOUT2 should not exceed the voltage of the power supply voltage VDDAMP.
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TSZ22111・15・001
16/19
TSZ02201-0M2M0BC12060-1-2
18.Apr.2013 Rev.002