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BD27400GUL Datasheet(PDF) 1 Page - Rohm |
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BD27400GUL Datasheet(HTML) 1 Page - Rohm |
1 / 23 page Datasheet 〇Product structure : Silicon monolithic integrated circuit 〇This product has no designed protection against radioactive rays . 1/19 TSZ02201-0C1C0E754430-1-2 © 2012 ROHM Co., Ltd. All rights reserved. 23.Apr.2014 Rev.003 TSZ22111 • 14 • 001 www.rohm.com Small-sized Class-D Speaker Amplifiers Filter-Less Class-D Monaural Speaker Amplifier BD27400GUL General Description 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 0 μA when standby and fast transitions from standby to active with little pop noise make it is suitable for applications that switch repeatedly between suspended and active. Features High output power 2.5W typ.(VDD=5V, RL=4 Ω, THD+N=10%, BTL) Very small package 9-Pin WL-CSP Gain selectable by external resistor LC Filter less Protection circuitry (Short protection, Thermal shutdown, Under voltage lockout) Analogue differential input / PWM digital output Pop noise suppression circuitry Applications Mobile phone, Smart phone, Digital video camera Key Specifications Operating voltage Range: 2.5V to 5.5V Circuit current(No signal): 2.9mA(Typ) Circuit current(Stand by): 0.1 μA(Typ) Output Power(RL=8 Ω): 0.85W(Typ) Output Power(RL=4 Ω): 2.5W(Typ) Start-up time: 3.0msec(Typ) Operating Temperature Range: -40°C to +85°C Package(s) W(Typ) x D(Typ) x H(Max) VCSP50L1 1.50mm x 1.50mm x 0.55mm Typical Application Circuit(s) Figure 1. Application circuit VCSP50L1 STBY IN+ IN- Bias OSC PWM H- Bridge VDD C2 A1 C1 B1 B2 PVDD OUT- A3 OUT+ C3 PGND A2 GND B3 CS +V BAT Ri Ri |
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