Datasheet Small-sized Class-D Speaker Amplifiers Filter-Less Class-D Monaural Speaker Amplifier BD27400GUL General Description Key Specifications BD27400GUL is a low voltage drive class-D monaural Operating voltage Range: 2.5V to 5.5V speaker amplifier that was developed for cellular Circuit current(No signal): 2.9mA(Typ) telephones, mobile audio products and the others. Circuit current(Stand by): 0.1A(Typ) The LC filter of the speaker output is unnecessary and Output Power(RL=8): 0.85W(Typ) the external part can compose a speaker amplifier at Output Power(RL=4): 2.5W(Typ) three. Start-up time: 3.0msec(Typ) Because the efficiency is high and is low consumption Operating Temperature Range: -40C to +85C power with the class-D operation, it is the optimal for the application of the battery drive. Package(s) W(Typ) x D(Typ) x H(Max) Also Current consumption of 0A when standby and fast VCSP50L1 1.50mm x 1.50mm x 0.55mm 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, 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 VCSP50L1 Pop noise suppression circuitry Applications Mobile phone, Smart phone, Digital video camera +V BAT Typical Application Circuit(s) CS VDD B1 B2 PVDD STBY C2 Bias OSC IN+ OUT- Ri A1 A3 H- PWM Bridge IN- OUT+ Ri C1 C3 GND A2 B3 PGND Figure 1. Application circuit Product structure : Silicon monolithic integrated circuit This product has no designed protection against radioactive rays . www.rohm.com TSZ02201-0C1C0E754430-1-2 2012 ROHM Co., Ltd. All rights reserved. 1/19 TSZ22111 14 001 11.May.2017 Rev.004 BD27400GUL Pin Configuration(s) Bottom View IN- STBY OUT+ C PVDD PGND VDD B IN+ GND OUT- A 1 3 2 Figure.2 Pin configuration Pin Description(s) No. Name I/O Function A1 IN+ I Positive input terminal GND terminal A2 GND P (Connect to PGND terminal) A3 OUT- O Negative output terminal Power supply terminal B1 VDD P (Connect to PVDD terminal) Power supply terminal B2 PVDD P (Connect to VDD terminal) Power GND terminal B3 PGND P (Connect to GND terminal) C1 IN- I Negative input terminal C2 STBY I Stand by control terminal C3 OUT+ O Positive output terminal Connect VDD(B1) and PVDD(B2) on PCB board, and use a single power supply. PVDD VDD B1 B2 Block Diagram(s) STBY C2 Bias OSC IN+ OUT- A1 A3 H- PWM Bridge IN- OUT+ C1 C3 GND A2 B3 PGND Figure.3 Block diagram www.rohm.com TSZ02201-0C1C0E754430-1-2 2012 ROHM Co., Ltd. All rights reserved. 2/19 TSZ22111 15 001 11.May.2017 Rev.004