PAM8945 datasheet(4/9 Pages) DIODES

4 / 9 page

PAM8945

Document number: DS38267 Rev. 1 - 2

4 of 9

www.diodes.com

December 2015

PAM8945

Electrical Characteristics (@VBAT=3.6V, AGC=GND, TA = +25°C, RL=4Ω +33uH, unless otherwise specified.)

Symbol

Parameter

Test Conditions

Min

Typ

Max

Unit

VBAT

Supply Voltage

—

2.8

—

5.2

Output Power

THD+N=10%, f=1kHz

VBAT=3.6V

—

4.0

—

THD+N=1%, f=1kHz

—

3.2

—

THD+N

Total Harmonic

Distortion Plus

Noise

PO=1.0W, RL=8Ω

f=1kHz

—

0.07

—

PO=2W, RL=4Ω

—

0.15

—

PSRR

Power Supply Ripple

Rejection

VBAT=3.6V, Input AC -

ground with C=1μF

f=217Hz

—

f=1kHz

—

f=10kHz

—

SNR

Signal-To-Noise Ratio

A-weighting

THD+N=1%

—

VOP

Peak Output Voltage

VBAT=3.6V

f=1kHz

—

5.75

—

VO_TH

Boost Convertor Auto-Pass

Through Threshold

—

V(PEAK)

Output Noise

Input AC-ground

No A-weighting

—

100

—

μV

A-weighting

—

Efficiency

RL=8Ω, PO=1W

f=1kHz

—

Quiescent Current

VBAT=3.6V

No Load

—

ISD

Shutdown Current

VBAT=2.8V to 5.2V

EN=0V

—

μA

RDS(ON)

Static Drain-to-Source On-

State Resistor

High Side PMOS,

I=500mA

VBAT=5V

—

260

—

mΩ

Low Side NMOS,

I=500mA

VBAT=5V

—

160

—

mΩ

fSW

Switching Frequency

VBAT=2.8V to 5.2V

Boost

—

1200

—

kHz

Class D

—

300

—

Closed-Loop Gain

—

RIN

Input Impedance

Av=20dB

—

KΩ

VOS

Output Offset Voltage

Input AC-ground

—

IPEAK

Convertor SW Peak Current

VBAT=3.6V

—

tON

Start-Up Time From EN

—

VIH

En Input High Voltage

VBAT=5V

—

1.3

—

VIL

En Input Low Voltage

VBAT=5V

—

0.6

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