Small-sized Class-D Speaker Amplifiers Analog Input Monaural Class-D Speaker Amplifier No.10101EAT02 BD5461GUL Description BD5461GUL is a low voltage drive class-D monaural speaker amplifier that was developed for cellular phones, mobile audio products and the others.LC-filter of speaker output is unnecessary, and the number of external components is three. It is suitable for the application of battery drive because of high efficiency and low power consumption. Also, stand-by current is 0A (typ.), and fast transitions from standby to active with little pop noise. It is suitable for applications that switch repeatedly between stand-by and active. Features 1) No LC filter required 2) Only three external components 3) High power 2.5W/4/BTL (VDD=5V, RL=4 , THD+N=10%, typ.) 4) High power 0.85W/8/BTL (VDD=3.6V, RL=8, THD+N=10%, typ.) 5) Gain 12dB 6) Analog differential input / PWM digital output 7) Pop noise suppression circuitry 8) Built-in standby function 9) Protection circuitry (Short protection Auto recover without power cycling , Thermal shutdown, Under voltage lockout) 10) Very small package 9-Bump WL-CSP (1.6*1.6*0.55mmMAX) Applications Mobile phones, PDA, Mobile electronics applications, Note-book PC etc. Absolute Maximum Ratings(Ta=25) Parameter Symbol Ratings Unit Power Supply Voltage VDD 7.0 V Power Dissipation Pd 690 *1 mW Storage Temperature Range Tstg -55 +150 STBY Terminal Input Range Vstby -0.1VDD+0.1 V IN+, IN- Terminal Input Range Vin -0.1VDD+0.1 V *1 When mounted on a 50 mm58mm Rohm standard board, reduce by 5.52 mW/C above Ta = +25 C. Operating Conditions Parameter Symbol Ratings Unit Power Supply Voltage VDD +2.5 +5.5 V Temperature Range Topr -40 +85 This product is not designed for protection against radioactive rays www.rohm.com 2010.06 - Rev.A 1/16 2010 ROHM Co., Ltd. All rights reserved. Technical Note BD5461GUL Electric Characteristics (Unless otherwise specified, Ta=25, VDD=3.6V, f=1kHz, RL=8, AC item=LC Filter L=22H, C=1F ) Rating Parameter Symbol Unit Conditions MIN. TYP. MAX. Circuit current (No signal) I 2.0 4.0 mA Active mode, No load CC Circuit current (Standby) I 0.1 2 A Standby mode STBY Output power 1 P 450 680 mW BTL, f=1kHz, THD+N=1% *1 O1 Output power 2 P 550 850 mW BTL, f=1kHz, THD+N=10% *1 O2 Voltage gain G 11.4 11.9 12.4 dB BTL V Power Supply Rejection Ratio P 45 53 dB BTL, f=1kHz, Vripple=0.1Vpp *2 SRR Output offset voltage Vo -25 0 +25 mV Vin=0V, BTL Switching Frequency fosc 175 250 325 kHz Start-up time Ton 0.39 0.51 0.73 msec High-level V 1.4 VDD V Active mode STBYH Standby input Voltage Low-level V 0 0.4 V Standby mode STBYL High-level I 6 12 18 A V =3.6V STBYH STBY Standby input current Low-level I -5 0 5 A V =0V STBYL STBY BTL=Bridged Tied Load (Voltage between A3-C3.), *1 B.W.=40030kHz,*2 DIN AUDIO Measurement Circuit Diagram Vripple A 10 VDD VDD B1 B2 PVDD VSTBY OUT- STBY 22H A3 A C2 Bias OSC V VSE 1 0.1 IN+ 8 V A1 VBTL Vin H- PWM Bridge IN- OUT+ 0.1 22H Vin C3 C1 V VSE 1 GND A2 B3 PGND Active / Standby Control STBY Pin(C2pin) Mode Pin level Conditions Active H IC active Standby L IC shutdown www.rohm.com 2010.06 - Rev.A 2/16 2010 ROHM Co., Ltd. All rights reserved.