PAM8302A
2.5W FILTERLESS CLASS-D MONO AUDIO AMPLIFIER
Description
The PAM8302A is a 2.5W Class-D mono audio amplifier. Its low
THD+N feature offers high-quality sound reproduction. The new
filterless architecture allows the device to drive speakers directly
instead of using low-pass output filters thus saving system cost
and PCB area.
With the same number of external components, the efficiency of the
PAM8302A is much better than that of Class-AB cousins. It can
optimize battery life thus is ideal for portable applications.
The PAM8302A is available in MSOP-8, SO-8, and U-DFN3030-8
packages.
Pin Assignments
Features
•
•
•
•
•
•
•
•
•
•
•
2.5W Output at 10% THD with a 4Ω Load and 5V Power Supply
Filterless, Low Quiescent Current and Low EMI
High Efficiency up to 88%
Superior Low Noise
Short Circuit Protection
Thermal Shutdown
Few External Components to Save Space and Cost
MSOP-8, SO-8 and U-DFN3030-8 Packages Available
Lead Free and Green Devices Available (RoHS Compliant)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
•
•
•
•
•
•
PMP/MP4
GPS
Portable Speakers
2-Way Radios
Hands-Free Phones/Speaker Phones
Cellular Phones
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and
Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
PAM8302A
Document number: DS41333 Rev. 4 - 2
1 of 13
www.diodes.com
September 2018
© Diodes Incorporated
PAM8302A
Typical Applications Circuit
Functional Block Diagram
Absolute Maximum Ratings
(@TA = +25°C, unless otherwise specified.)
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.
Parameter
Supply Voltage at No Input Signal
Input Voltage
Maximum Junction Temperature
Storage Temperature
Soldering Temperature
Rating
6.0
-0.3 to V
DD
+0.3
+150
-65 to +150
300, 5s
Unit
V
°C
PAM8302A
Document number: DS41333 Rev. 4 - 2
2 of 13
www.diodes.com
September 2018
© Diodes Incorporated
PAM8302A
Recommended Operating Conditions
(@TA = +25°C, unless otherwise specified.)
Parameter
Supply Voltage Range
Operation Temperature Range
Junction Temperature Range
Rating
2.0 to 5.5
-40 to +85
-40 to +125
Unit
V
°C
°C
Thermal Information
Parameter
Thermal Resistance (Junction to Ambient)
Package
SO-8
MSOP-8
U-DFN3030-8
Symbol
ϴ
JA
Max
115
180
47.9
Unit
°C/W
Electrical Characteristics
(@T
A
= +25°C, V
IN
= 3.6V, V
O
= 1.8V, C
IN
= 10µF, C
OUT
= 10µF, L = 4.7µH, unless otherwise specified.)
Parameter
Supply Voltage Range
Quiescent Current
Shutdown Current
Symbol
V
DD
I
Q
I
SHDN
Test Conditions
—
No Load
V
SHDN
= 0V
f = 1kHz, R
L
= 4Ω,
THD+N = 10%
f = 1kHz, R
L
= 4Ω,
THD+N = 1%
f = 1kHz, R
L
= 8Ω,
THD+N = 10%
Min
2.0
—
—
2.25
1.10
1.80
0.86
1.35
0.72
1.15
0.6
—
—
—
—
—
22.5
45
85
75
—
—
200
—
—
1.2
—
+120
—
Typ
4
—
2.50
1.25
2.00
0.95
1.50
0.80
1.30
0.65
85
0.30
0.45
0.35
0.40
24.0
50
90
80
180
120
250
0.45
0.20
—
—
+135
+30
Max
5.5
8
1
—
—
—
—
—
—
—
—
88
0.35
0.50
0.40
0.45
25.5
—
—
—
300
200
300
0.50
0.25
—
0.4
—
—
Units
V
mA
µA
Output Power
P
O
Peak Efficiency
Total Harmonic
Distortion Plus Noise
Gain
Power Supply Ripple
Rejection
Dynamic Range
Signal to Noise Ratio
Noise
Oscillator Frequency
Drain-Source On-State
Resistance
SHD Input High
SHD Input Low
Over Temperature
Protection
Over Temperature
Hysteresis
η
THD+N
G
V
PSRR
DYN
SNR
V
N
f
OSC
R
DS(ON)
V
SH
V
SL
OTP
OTH
f = 1kHz, R
L
= 8Ω,
THD+N = 1%
f = 1kHz
RL = 8Ω, P
O
= 0.1W, f = 1kHz
RL = 8Ω, P
O
= 0.5W, f = 1kHz
RL = 4Ω, P
O
= 0.1W, f = 1kHz
RL = 4Ω, P
O
= 0.5W, f = 1kHz
—
V
DD
= 5V
V
DD
= 3.6V
V
DD
= 5V
V
DD
= 3.6V
V
DD
= 5V
V
DD
= 3.6V
V
DD
= 5V
V
DD
= 3.6V
W
%
%
dB
dB
dB
dB
µV
kHz
Ω
V
°C
°C
No Inputs, f = 1kHz, V
PP
= 200mV
f = 20 to 20kHz
f = 20 to 20kHz
No A-Weighting
A-Weighting
—
I
DS
= 100mA
—
—
Junction Temperature
—
P MOSFET
N MOSFET
PAM8302A
Document number: DS41333 Rev. 4 - 2
3 of 13
www.diodes.com
September 2018
© Diodes Incorporated
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