SC183C

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11

Pin Descriptions

Pin #

Pin Name

Pin Function

1,2

PVIN

Input supply voltage for the converter power stage.

3

AGND

Ground connection for the internal circuitry. AGND needs to be connected to PGND directly.

4

AVIN

Power supply for the internal circuitry. Connect a 10W resistor to PVIN and a 1mF capacitor to AGND.

5

CTL0

Control bit 0 - see Table 1 for decoding. This pin has a 1 MΩ internal pulldown resistor. This resistor is switched

in circuit whenever the EN pin is below the enable input high threshold, or when the part is in undervoltage

lockout.

6

CTL1

Control bit 1 - see Table 1 for decoding. This pin has a 1 MΩ internal pulldown resistor. This resistor is switched

in circuit whenever the EN pin is below the enable input high threshold, or when the part is in undervoltage

lockout.

7

CTL2

Control bit 2 - see Table 1 for decoding. This pin has a 1 MΩ internal pulldown resistor. This resistor is switched

in circuit whenever the EN pin is below the enable input high threshold, or when the part is in undervoltage

lockout.

8

CTL3

Control bit 3 - see Table 1 for decoding. This pin has a 1 MΩ internal pulldown resistor. This resistor is switched

in circuit whenever the EN pin is below the enable input high threshold, or when the part is in undervoltage

lockout.

9

NC

No connection.

10

VOUT

Output voltage sense pin.

11,12,13

PGND

Ground connection for converter power stage.

14,15,16

LX

Switching node - connect an inductor between this pin and the output capacitor.