NCP2820 Series
2.65 W Filterless Class-D
Audio Power Amplifier
The NCP2820 is a cost-effective mono Class-D audio power
amplifier capable of delivering 2.65 W of continuous average power
to 4.0 ꢀ from a 5.0 V supply in a Bridge Tied Load (BTL)
configuration. Under the same conditions, the output power stage can
provide 1.4 W to a 8.0 ꢀ BTL load with less than 1% THD+N. For
cellular handsets or PDAs it offers space and cost savings because no
output filter is required when using inductive tranducers. With more
than 90% efficiency and very low shutdown current, it increases the
lifetime of your battery and drastically lowers the junction
temperature.
The NCP2820 processes analog inputs with a pulse width
modulation technique that lowers output noise and THD when
compared to a conventional sigma-delta modulator. The device allows
independent gain while summing signals from various audio sources.
Thus, in cellular handsets, the earpiece, the loudspeaker and even the
melody ringer can be driven with a single NCP2820. Due to its low
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MARKING
DIAGRAMS
A3
1
A1
9-PIN FLIP-CHIP CSP
FC SUFFIX
CASE 499AL
C1
xx
= AQ for NCP2820
= BD for NCP2820A
A
Y
= Assembly Location
= Year
WW = Work Week
G
42ꢁ ꢂV noise floor, A-weighted, a clean listening is guaranteed no
matter the load sensitivity. With zero pop and click noise performance
NCP2820A turns on within 1 ms versus 9 ms for NCP2820 version.
= Pb-Free Package
8
Features
1
1
•ꢀOptimized PWM Output Stage: Filterless Capability
ZB MG
8 PIN UDFN 2x2.2
MU SUFFIX
CASE 506AV
•ꢀEfficiency up to 90%
Low 2.5 mA Typical Quiescent Current
•ꢀLarge Output Power Capability: 1.4 W with 8.0 ꢀ Load (CSP) and
THD + N < 1%
ZB
M
G
= Specific Device Code
= Date Code
= Pb-Free Package
•ꢀUltra Fast Start-up Time: 1 ms for NCP2820A Version
•ꢀHigh Performance, THD+N of 0.03% @ V = 5.0 V,
p
R = 8.0 ꢀ, P = 100 mW
L
out
ORDERING INFORMATION
See detailed ordering and shipping information on page 20 of
this data sheet.
•ꢀExcellent PSRR (-65 dB): No Need for Voltage Regulation
•ꢀSurface Mounted Package 9-Pin Flip-Chip CSPand UDFN8
•ꢀFully Differential Design. Eliminates Two Input Coupling Capacitors
Cs
•ꢀVery Fast Turn On/Off Times with Advanced Rising and Falling
Gain Technique
VP
Audio
Input
from
R
R
•ꢀExternal Gain Configuration Capability
•ꢀInternally Generated 250 kHz Switching Frequency
•ꢀ“Pop and Click” Noise Protection Circuitry
•ꢀPb-Free Packages are Available
i
i
INP
INM
OUTM
OUTP
DAC
SD
Input from
Microcontroller
Applications
GND
•ꢀCellular Phone
•ꢀPortable Electronic Devices
•ꢀPDAs and Smart Phones
•ꢀPortable Computer
Cs
R
R
i
i
1.6 mm
3.7 mm
©ꢀ Semiconductor Components Industries, LLC, 2007
September, 2007 - Rev. 6
1
Publication Order Number:
NCP2820/D