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Cautions on use

1.

Numbers and data in entries are representative design values and are not guaranteed values of the items.

2.

Although ROHM is confident that the example application circuit reflects the best possible recommendations, be sure to

verify circuit characteristics for your particular application. Modification of constants for other externally connected

circuits may cause variations in both static and transient characteristics for external components as well as this Rohm IC.

Allow for sufficient margins when determining circuit constants.

3.

Absolute maximum ratings

Use of the IC in excess of absolute maximum ratings, such as the applied voltage or operating temperature range

(Topr), may result in IC damage. Assumptions should not be made regarding the state of the IC (short mode or open

mode) when such damage is suffered. A physical safety measure, such as a fuse, should be implemented when using

the IC at times where the absolute maximum ratings may be exceeded.

4.

-5V pin potential

Ensure a minimum -5V pin potential in all operating conditions. Make sure that no pins are at a voltage below the -5V

pin at any time, regardless of whether it is a transient signal or not. <GND=0V>

5.

Thermal design

Perform thermal design, in which there are adequate margins, by taking into account the permissible dissipation (Pd)

in actual states of use.

6.

Short circuit between terminals and erroneous mounting

Pay attention to the assembly direction of the ICs. Wrong mounting direction or shorts between terminals, GND, or other

components on the circuits, can damage the IC.

7.

Operation in strong electromagnetic field

Using the ICs in a strong electromagnetic field can cause operation malfunction.

8.

Supply voltage

Although basic circuit function is guaranteed under normal voltage operation (5V: ±4.5

5.5V, 12V: 11.5

12.5V),

ensure each parameter complies with appropriate electrical characteristics, when using this device.

9.

The application circuitry example

SW and FS output are controlled by BD3825FS which in turn is controlled by BH7624KS2 and therefore, BD3825FS

and BH7624KS2 should be used in conjunction. Pins 18 and 24 should be pulled down by 10k

resistor. Pins 1, 2, 6,

7, 10, 12 must be controlled by the microcontroller when using BD3825FS on its own.

90

92

94

96

98

100

4.4

4.6

4.8

5

5.2

5.4

5.6

90

92

94

96

98

100

-50

0

50

100

100

150

200

250

-50

0

50

100

-100

-95

-90

-85

-80

-50

0

50

100

-100

-95

-90

-85

-80

-50

0

50

100

-100

-95

-90

-85

-80

-50

0

50

100

Fig9. S/N ratio

(Supply voltage Dependence)

Fig10. S/N ratio

(Temperature dependence)

Fig11. ON Resistance

Fig12. MUTE Attenuation

Fig13. ASW Crosstalk

Fig14. Channel Crosstalk