3

,

Power Analog Microelectronics Inc

www.poweranalog.com

PAM2320

3A Low Noise Step-Down DC-DC Converter

05/2011 Rev1.0

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.

In p ut Vo lta ge V . .. .. .. .. .. .. .. ... .. .. .. .. .. .. ... .. .. .6 V

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

I N

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

Thermal Resistance (Junction to Ambient)

PSOP-8

90

°C/W

Thermal Resistance (Junction to Case)

θ

JC

PSOP-8

11

°C/W

Internal Power Diss ipation (@TA=25°C)

PSOP-8

1100

mW

Name

P in Number

Function

NC

1

No Connected

VIN

2

B ias s upply. Chip main power supply pin

SW

3

The drains of the internal main and synchronous power MOSFET.

GND

4

GND

FB

5

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

NC

6

No Connected

EN

7

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

below 0.3V shuts down the device.

NC

8

No Connected

Pin Description