PAM2319

Dual High-Efficiency PWM Step-Down DC-DC Coverter

6

,

Power Analog Microelectronics Inc

www.poweranalog.com

Electrical Characteristic

T =25 C, V =3.3V, V =1.2V, C =10µF, C =10µF, L=1.0µH, unless otherwise noted.

A

IN

O

IN

O

O

Channel 2

PARAMETER

SYMBOL

Test Conditions

MIN

TYP

MAX

UNITS

Input Voltage Range

2.7

5.5

V

2.6

2.7

V

Hysteresis

250

mV

UVLO Threshold

2

V

Regulated Feedback Voltage

0.588

0.6

0.612

V

Reference Voltage Line Regulation

ΔV

FB

0.3

%/V

Regulated Output Voltage Accurac y

-3

+3

%

Peak Inductor Current

3

A

Output Voltage Line Regulation

LNR

0.2

0.5

%/V

Output Voltage Load Regulation

LDR

-2

2

%

Quiescent Current

No load

55

100

µA

Shutdown Current

0.1

1

µA

Oscillator Frequency

2.5

MHz

P MOSFET

0.11

Ω

Drain-Sourc e On-State Resistance

N MOSFET

0.085

Ω

SW Leakage Current

±0.01

1

µA

Efficiency

η

Io= 500mA,VIN=3.3V

87

%

PSM Threshold

Vin=3.3V

250

450

mA

EN Threshold High

1.5

V

EN Threshold Low

0.3

V

EN Leak age Current

±0.01

µA

Soft-start

From EN2 to Output

250

uS

Over Temperature Protection

OTP

150

°C

OTH

30

°C

12/2011 Rev1.1