SC21152

11

Pin Descriptions - 1.5x2mm 6-lead MLPD

Pin #

Pin Name

Pin Description

1

VIN

Input Supply Voltage for the device and sense point for the input Under Voltage Lock Out.

2

PG

Power Good Output. Open-drain Power Good indicator. An open indicates that the output voltage is

in regulation. The Power Good pin requires an external pullup.

3

EN

Enable input. Connect to logic high or VIN to enable the device. Connect to logic low or GND to dis-

able the device.

4

FB

Feedback input (output voltage sense). For adjustable VOUT options, connect to the midpoint of a

resistor divider between the output capacitor and GND.

For fixed VOUT options connect to the output capacitor.

5

GND

Ground connection.

6

LX

Switching node connection to inductor.

PAD

PAD

Thernal ground for heatsinking. Connect to GND with multiple vias.

Block Diagram

PW M /Power Save

Controller

G ND

VIN

G ain Am p

LX

EN

PM O S

NM O S

Ram p

G en

ICO M P

PW M Com p

G ate

Drive

ICO M P

Ref

Fixed/

Adjustable

Vout Select

Device Enable

and UVLO

PG

Power G ood

1

6

5

4

3

2

FB

PAD

PAD

FB