Electrical Characteristic

T =25

, V =3.3V, Vout=1.2V,C =10µF, C =10µF, L=0.47µH, unless otherwise noted.

A

IN

IN

O

°C

4

,

Power Analog Microelectronics Inc

www.poweranalog.com

PARAMETER

SYMBOL

Test Conditions

MIN

TYP

MAX

UNITS

Input Voltage Range

2.7

3.3

5.5

V

2.6

2.7

V

Hysteresis

250

mV

UVLO Threshold

2

V

Output Voltage Range

Vout

1

1.2

Vin

V

Output Voltage Accuary

Vout

Io=100mA

-3.0

+3.0

%

Regulated Feedback Voltage

No Load

0.588

0.60

0.612

V

PMOS Current Limit

3.0

A

Output Voltage Line Regulation

LNR

0.3

%/V

Output Voltage Load Regulation

LDR

1

%/A

Quiescent Current

No load

55

90

µA

Shutdown Current

1

µA

Oscillator Frequency

3

MHz

P MOSFET

130

m

Ω

Drain-Source On-State Resistance

N MOSFET

90

m

Ω

SW Leakage Current

1

µA

Start-up Time

Ts

200

us

PSM Threshold

Vin=3.3V,Vo=1.2V

200

mA

EN Threshold High

V

EH

1.4

V

EN Threshold Low

V

EL

0.4

V

EN Leakage Current

±0.01

µA

Over Temperature Protection

OTP

150

°C

OTH

30

°C

PAM2321

3MHz,Fast Transient 2A Step-Down Converter

01/2013 Rev1.2