3

Absolute Maximum Ratings

These are stress ratings only and functional operation is not implied. Exposure to absolute maximum

ratings for prolonged time periods may affect device reliability. All voltages are with respect to ground.

Input Voltage PV ,V ......................................6V

EN Pin Voltage...................................-

IN

IN

SW Pin Voltage......................-0.3V to (PV +0.3V)

FB Pin Voltage.........................-0.3V to (V +0.3V)

0.3V to -6V

Maximum Junction Temperature..................150°C

Storage Temperature Range...........-65°C to 150°C

Soldering Temperature.......................300°C, 5sec

IN

IN

Recommended Operating Conditions

Supply Voltage..................................2.7V to 5.5V

°C

°C

°C

°C

Junction Temperature Range..........-40

to 125

Ambient Temperature Range...........-40

to 85

Thermal Information

Parameter

Symbol

Package

Maximum

Unit

SOP-8(EP)

90

DFN3X3-10

60

Thermal Resistanc e (Junction to Ambient)

θ

JA

QFN3X3-16

35

°C/W

SOP-8(EP)

11

DFN3X3-10

8.5

Thermal Resistance (Junction to Case)

θ

JC

QFN3X3-16

11

°C/W

,

Power Analog Microelectronics Inc

www.poweranalog.com

PAM2303

3A Low Noise Step-Down DC-DC Converter

Pin Configuration & Marking Information

11/2011 Rev1.2

Pin Description

Name

DFN3X3-10

Function

SW

1,2,3

The drains of the internal main and synchronous power MOSFET.

GND

4

GND

EN

5

Enable control input. Force this pin voltage above 1.5V, enables the chip, and

below 0.3V shuts down the device.

FB

6

Feedback voltage to internal error amplifier, the threshold voltage is 0.6V.

NC

7

No connec ted

VIN

8,9,10

Bias supply. Chip main power supply pin

C: Pin Configuration

Y:

Year

W: Week

X:

Internal Code

(Exposed Pad)

SW

SW

SW

GND

EN

1

2

3

4

5

VIN

VIN

VIN

NC

FB

10

9

8

7

6

P2303C

XXXYW

GND

Top View

DFN3X3-10