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OCA7220
3W Filterless Mono ClassD Audio Power Amplifier
Ultra Low EMI ,3W Filterless Mono ClassD Audio Power Amplifier
with Anti-Crack Protection
General Description
OCA7220 is a Anti-Crack Protection, ultra-low
EMI, Monaural, 3W class D audio power amplifier.
Anti-Crack Protection function can adjust system gain
automatically by detecting the output Broken audio
distortion. It is not only avoiding the speaker from the
damage caused by overload output power, but also
offering a comfortable listening experience.
OCA7220 use proprietary EEE (Enhanced
Emission Elimination) technology, significantly lower
EMI interference in the whole bandwidth. To 60cm
audio line, there is more than 20dB margin, under the
FCC standard.
OCA7220 no filter PWM modulation structure
and built-in gain reduce the external components,
PCB area, system costs, and simplifying the design.
Up to 90% Efficiency fit for mobile phones and other
portable audio products more.
OCA7220 built-in over current protection, thermal
protection and low voltage malfunction prevention
function, effectively protect chip in the abnormal
working conditions from being damaged.
OCA7220 provides 1.45mm * 1.45mm WLCSP9
package, rated operating temperature range is
-40 to 85
Features
Anti-Crack Protection provides three operating
modes:ACP1,ACP2,ACPOFF
Ultra low EMI
POP noise reduction function
Maximum output
3W (THD+N=10%VDD=5VRL=4Ω)
Distortion rate
THD+N=0.05%(output power=1WVDD=5V)
Filter free Class-D Structure
Up to 90% efficiency
High PSRR:-80dB(217Hz)
Low Quiescent Current2.8mA
Low shutdown current<0.1uA
Operating Voltage Range:2.5V5.5V
Over-current protection function
Thermal protection function
UVLO.
Package:WLCSP9,1.45mm*1.45mm
Applications
Cellular Phone
MP3/PMP
GPS
Digital Photo Frame
Typical Application Circuit
Figure 1.Differential input application
Page1 - 3
Rev. 1.2 Feb .27, 2018
源于灿瑞 磁传天下

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OCA7220
3W Filterless Mono ClassD Audio Power Amplifier
Figure 2.Single-ended input application schematic
Pin Configuration
OCA7220 /WLCSP9 (Top View)
Pin Functions:
NO.
A1
A2
A3
B1
B2
B3
C1
C2
C3
Name
INP
VDD
VOP
AGND
VREF
PGND
INN
CTRL
VON
Figure3.
Function
Positive input terminal
Power supply
Positive output terminal
GND for analog circuits
Analog reference
GND for power
Negative input terminal
Power down and ACP control terminal
Negative output terminal
Page2 - 3
Rev. 1.2 Feb .27, 2018
源于灿瑞 磁传天下

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Ordering Information
OCA7220
3W Filterless Mono ClassD Audio Power Amplifier
OCA7220XXX
Package:
WP:WLCSP9
Packing:
A: tape
Temperature grade:
D: -40~85
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Rev. 1.2 Feb .27, 2018
源于灿瑞 磁传天下