Electrical Characteristic

T =25

, V =3.6V, V =1.8V, C =10μF, C =10μF, L=4.7μH, unless otherwise noted.

AIN

O

IN

O

°C

4

,

Power Analog Microelectronics Inc

www.poweranalog.com

PAM2309

1A Step-Down DC-DC Converter

PARAMETER

SYMBOL

Test Conditions

MIN

TYP

MAX

UNITS

Input Voltage Range

2.5

5.5

V

Regulated Feedback Voltage

0.490

0.5

0.510

V

Reference Voltage Line Regulation

0.3

%/V

Regulated Output Voltage Accuary

-3

+3

%

Peak Inductor Current

1.5

A

Output Voltage Line Regulation

LNR

V

0.2

0.5

%/V

Output Voltage Load Regulation

LDR

0.5

1.5

%

Quiescent Current

No load

40

70

μA

Shutdown Current

0.1

1

μA

1.2

1.5

1.8

MHz

Oscillator Frequency

500

kHz

PMOSFET

0.3

0.45

Ω

Drain-Source On-State Resistance

N MOSFET

0.35

0.5

Ω

SW Leakage Current

±0.01

1

μA

High Efficiency

η

96

%

EN Threshold High

1.5

V

EN Threshold Low

0.3

V

EN Leakage Current

±0.01

μA

Over Temperature Protection

OTP

150

°C

OTH

30

°C

08/2009 Rev 1.1