BD6520F,BD6522F

Technical Note

10/16

www.rohm.com

2009.05 - Rev.A

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(BD6522F)

Fig.59 Block diagram(BD6522F)

Pin No.

Symbol

Pin Function

1,2

VDDA, VDDB

Switch input pin

At use, connect each pin outside.

3

SSCTL

Soft start setting pin

Add external capacitor, it is possible to delay switch On, Off time.

4

CTRL

Control input pin

Switch On at High level, switch Off at Low level.

5

VSS

Ground

6

DISC

Discharge pin

7,8

OUTA, OUTB

Switch output pin

At use, connect each pin outside.

1

Charge

Pump

Oscillator

5

Band

Gap

Thermal

Shutdown

S

Q

FF

R

3

4

7

2

8

VSS

＋

UVLO

－

VDDB

CTRL

SSCTL

VDDA

6

DISC

OUTB

OUTA

VDDA

VDDB

SSCTL

CTRL

OUTA

OUTB

DISC

VSS

1

2

3

4

5

6

7

8