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..................................2.5V 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

QFN 3x3-16

35

Thermal Resistance (Junction to Ambient)

θ

JA

SOP-8(EP)

90

°C/W

QFN 3x3-16

14

Thermal Resistance (Junction to Case)

θ

JC

SOP-8(EP)

11

°C/W

,

Power Analog Microelectronics Inc

www.poweranalog.com

PAM2307

3A Low Noise Step-Down DC-DC Converter

1

2

3

4

8

7

6

5

Top View

SOP-8(EP)

P2307B

XXXYW

B:

Pin Configuration

Y:

Year

W: Week

X:

Internal Code

Name

Pin Num ber

Function

SW

1

The drains of the internal main and synchronous power MOSFET.

PGND

2

Main power ground pin

FB

3

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

GND

4

Signal ground for small signal components.

EN

5

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

below 0.3V shuts down t he device.

TEST

6

Test Mode(no connect or to Ground)

VIN

7

Bias supply. Chip main power supply pin

PVIN

8

Input supply for power stage. Must be closely decoupled to PGND

Pin Description

Pin Configuration & Marking Information

03/2011 Rev2.1