Small-sized Class-D Speaker Amplifiers Analog Input Monaural Class-D Speaker Amplifiers No.10101EAT04 BD5632NUX,BD5634NUX,BD5638NUX Description BD5632NUX, BD5634NUX and BD5638NUX are a low voltage drive class-D speaker amplifier that was developed for mobile phones, mobile audio products and the others. BD5632NUX has a fixed gain of 6dB, BD5634NUX has a fixed gain of 12dB, and BD5638NUX has a fixed gain of 18dB. 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) LC Filter less 2) Only 3 external components 3) High power 2.5W/4ohm/BTL (VDD=5V, RL=4ohm, THD+N=10%, typ.) 4) High power 0.85W/8ohm/BTL (VDD=3.6V, RL=8ohm, THD+N=10%, typ.) 5) Analog differential input / PWM digital output 6) Pop noise suppression circuit 7) Standby function (Mute function) 8) Protection circuit (Short protection Auto recover without power cycling , Thermal shutdown, under voltage lockout) 9) Ultra small package VSON008X2030 (2.03.00.6mmMAX) Applications Mobile phones, PND (Personal Navigation Device), DSC, PDA, etc Line up matrix Production Name BD5632NUX BD5634NUX BD5638NUX Gain (dB) 6 12 18 Input Impedance (k) 100 50 25 Package VSON008X2030 Absolute maximum ratings (Ta=25) Parameter Symbol Ratings Unit Power Supply Voltage VDD 7.0 V Power Dissipation Pd 0.52 *1 W Storage Temperature Range Tstg -55 ~ +150 STBY Terminal Input Range Vstby -0.3 ~ VDD+0.3 V IN+, IN- Terminal Input Range Vin -0.3 ~ VDD+0.3 V (*1) ROHM standard board mounted (Board size 70mm70mm1.6mmt, 1layer), de-rate the value 4.16mW/deg above Ta=+25deg. 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 1/14 2010 ROHM Co., Ltd. All rights reserved. Technical Note BD5632NUX, BD5634NUX, BD5638NUX Electric characteristics (Unless otherwise specified, Ta=+25deg, VDD=+3.6V, f=1 kHz, RL=8, AC item=LC Filter L=22H, C=1F) Limits Parameter Symbol Unit Conditions MIN. TYP. MAX. Circuit current (No signal) I 2.7 5.4 mA Active mode, No load CC Circuit current (Standby) I 0.1 2 A Standby mode STBY Output power1 P 450 680 mW BTL, f=1kHz, THD+N=1% *1 O1 Output power2 P 550 850 mW BTL, f=1kHz, THD+N=10% *1 O2 Voltage gain (BD5632NUX) 5.5 6.0 6.5 Voltage gain (BD5634NUX) G 11.5 12.0 12.5 dB BTL V Voltage gain (BD5638NUX) 17.0 18.0 19.0 Switching Frequency fosc 150 250 350 kHz Start-up time Ton 0.36 0.51 0.85 msec STBY threshold voltage V 0.4 1.4 V Active to standby shift STBY Input impedance (STBY) R 210 300 390 kohm STBY Input impedance (IN+/-) 70 100 130 (BD5632NUX) Input impedance (IN+/-) R 35 50 65 kohm IN (BD5634NUX) Input impedance (IN+/-) 17.5 25 32.5 (BD5638NUX) *1:B.W. =20 kHz-LPF, BTL: The voltage between 5 pin and 8 pin Measurement Circuit Diagram VSTBY OUT- 22H 8 1 Bias OSC A STBY V VSE 1F GND NC 2 7 8 V VBT L 10F 0.47F IN+ 3 6 VDD Vin H- PWM 0.47F Bridge 22H OUT+ IN- Vin 4 5 V VSE 1F A VDD Active/Standby Control STBY Pin (1pin) Mode Pin Level Conditions Active H IC Active Standby L IC Shutdown www.rohm.com 2010.06 - Rev.A 2/14 2010 ROHM Co., Ltd. All rights reserved.