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YD7388 - Four-channel 25W (BTL) audio amplifier
CD3313EO - four-channel audio processor
GM-X924 - BRIDGEABL FOUR-CHANNEL POWER AMPLIFIER SERVICE MANUAL
LM36274 - Four-Channel LCD Backlight Driver
L293D - PUSH-PULL FOUR CHANNEL DRIVER
PT2313 - three-input four output digital control channel audio processor
CD3313 - four-channel audio processor
ALC3261 - FOUR CHANNEL I2S/PCM AUDIO CODEC
AL3066 - FOUR-CHANNEL CURRENT SOURCE BOOST LED DRIVER
MC33797 - Four Channel Squib Driver
ES7210 - High Performance Four Channels Audio ADC
MAX31732 - Four-Channel Remote Temperature Sensor
HA13143 - Four-Channel BTL Driver
PT2311 - Four-channel Digital Control Audio Processor Utilizing CMOS Technology
TPS61194 - High-Performance Four-Channel LED Driver
HA-2404 - 40MHz/ PRAM Four Channel Programmable Amplifiers
AP3064 - FOUR-CHANNEL CURRENT SOURCE BOOST LED DRIVER
L293DD - PUSH-PULL FOUR CHANNEL DRIVER
CS5467 - Four-channel Power/Energy
ACT8712 - Four Channel Integrated Power Management IC