2012/02/27

A.1

2

EM5045

Pin Assignment

Pin Name

Pin No.

Pin Function

VIN

1

Input Voltage. This is the drain input to the power device that supplies current to

the output pin. Minimum 10uF low ESR ceramic capacitor is recommended at this

pin.

GND

2

Ground.

REFEN

3

Reference Voltage Input. This pin is the non-inverting input of the error amplifier.

The output voltage is regulated to track the reference voltage input. Pulling the pin

below 0.15V turns the regulator off.

VOUT

4

Output Voltage. VOUT is power output pin. Minimum 10uF low ESR ceramic

capacitor is required at this pin for stabilizing VOUT voltage.

NC

5

No Connection.

CNTL

6

Supply Input for Control Circuit. CNTL provides supply voltage to the control

circuitry and driver for the pass transistor. The driving capability of output current

NC

7

No Connection.

NC

8

No Connection.

Function Block Diagram