Analog Input Monaural Class-D Speaker Amplifier
BD27400GUL is a low voltage drive class-D monaural speaker amplifier that was developed for cellular telephones, mobile audio products and the others.
The LC filter of the speaker output is unnecessary and the external part can compose a speaker amplifier at three.
Because the efficiency is high and is low consumption power with the class-D operation, it is the optimal for the application of the battery drive.
Also Current consumption of 0µA when standby and fast transitions from standby to active with little pop noise make itis suitable for applications that switch repeatedly between suspended and active.
For Automotive usage, please contact Sales.
Features:・ High output power 2.5W typ.（VDD=5V,RL=4Ω,THD+N=10%,BTL）
・ Very small package 9-Pin WL-CSP (1.5*1.5*0.55mmMAX)
・ Gain selectable by external resistor
・ LC Filter less
・ Stand by function
・ Protection circuitry (Short protection, Thermal shutdown, Under voltage lockout)
・ Analogue differential input / PWM digital output
・ Pop noise suppression circuitry
- Evaluation Board
BD546xGUL series, BD27400GUL are a wafer-level CSP packaged low voltage monaural Class-D speaker amplifier for mobile phone, portable type electric devices. BD5460/61GUL are a fixed gain type. BD27400GUL is a variable gain type, BD5465/66/67/68/69GUL are fixed gain with ALC type.