Application information

STLDC08

20/29

Doc ID 18476 Rev 1

Another important parameter is the drain source breakdown voltage. During the ON state,

the potential of the LX point is 0 V, while during the OFF state the potential of this point rises

of the main switch must be greater than this voltage to prevent main switch damage.

Figure 19.

Current diagram ON state

C

IN

C

OUT

L1

D1

Rsense

VBAT

DVR

STLDC08

SENSE

VOUT

LX

LED

R

FB

FB

ON state

AM07849v1

C

IN

C

OUT

L1

D1

Rsense

VBAT

DVR

STLDC08

SENSE

VOUT

LX

LED

R

FB

FB

ON state

AM07849v1

Figure 20.

Current diagram OFF state

C

IN

L1

D1

Rsense

VBAT

DVR

STLDC08

SENSE

VOUT

LX

LED

R

FB

FB

OFF state

C

OUT

AM07850v1

C

IN

L1

D1

Rsense

VBAT

DVR

STLDC08

SENSE

VOUT

LX

LED

R

FB

FB

OFF state

C

OUT

AM07850v1