Class-AB Speaker Amplifiers 1.9W+1.9W Stereo Speaker Amplifier No.10077EAT07 BD7836EFV Description BD7836EFV is a Class-AB stereo speaker amplifier, developed for note-book PC, desktop PC, portable devices and others. Class-AB amplifier has no EMI noise. Power package HTSSOP-B20 can realize high output power. Low circuit current at active mode reduce consumption of battery. Shutdown current is 0.1A typically, and pop noise level when shutdown turns on and off is very small. This device is suitable for the application that often changes mode between shutdown state and active state. Features 1) High power 1.9W typ. (VDD=5V, RL=4, THD+N=1%, stereo input) High power 1.2W typ. (VDD=5V, RL=8, THD+N=1%, stereo input) 2) Gain selectable by the external control (6,10,15.6,21.6dB) 3) Pop noise suppression circuitry 4) Shutdown function (also Mute function) I =0.1A(typ.) sd 5) Protection circuitry (Thermal shutdown, Under voltage lockout) 6) Power Package with thermal pad HTSSOP-B20 Applications Note-book PC, Desktop PC, etc. Absolute maximum ratings (Ta=+25) Parameter Symbol Ratings Unit Power Supply Voltage VDDmax 7.0 V *1 1 W Power Dissipation Pd *2 3.2 W Storage Temperature Tstg -55 +150 *3 Input Terminal Input Voltage Range Vin -0.3VDD+0.3 V *4 Control Terminal Input Voltage Range Vctl -0.3VDD+0.3 V *1 70mm70mm1.6mm FR4 1-layer glass epoxy board(Copper on top layer 0%) Derating in done at 8mW/ for operating above Ta=25. There are thermal via on the board. *2 70mm70mm1.6mm FR4 4-layer glass epoxy board (Copper on bottom 2 and 3 layer 100%) Derating in done at 25.6mW/ for operating above Ta=25. There are thermal via on the board. *3 Input Terminal (LIN+, LIN-, RIN+, RIN-) *4 Control Terminal ( SHUTDOWN , GAIN0, GAIN1) Operating conditions Parameter Symbol Range Unit Power Supply Voltage VDD +4.5 +5.5 V Temperature Topr -40 +85 * These products arent designed for protection against radioactive rays. www.rohm.com 2010.07 - Rev.A 1/16 2010 ROHM Co., Ltd. All rights reserved. Technical Note BD7836EFV Electric characteristic (Unless otherwise specified, Ta=+25, VDD=+5.0V, R =8, AC stereo input) L Limits Parameter Symbol Unit Condition Min. Typ. Max. IC active, No load Circuit current (Active) I 5 10 mA cc SHUTDOWN =Hi IC Shutdown Circuit current (Shutdown) I 0.1 2.0 A sd SHUTDOWN =Lo <Speaker amplifier> *1 Output power 1 P 0.7 1.2 W RL=8, BTL, f=1kHz, THD+N=1% O1 *1 Output power 2 P 1.9 W RL=4, BTL, f=1kHz, THD+N=1% O2 5.5 6.0 6.5 dB BTL, GAIN0=GAIN1=L 9.5 10 10.5 dB BTL, GAIN0=L, GAIN1=H Gain G V 14.6 15.6 16.5 dB BTL, GAIN0=H, GAIN1=L 20.6 21.6 22.6 dB BTL, GAIN0=GAIN1=H 63 90 117 k GAIN0=GAIN1=L 49 70 91 k GAIN0=L, GAIN1=H Input resistance R IN 31 45 59 k GAIN0=H, GAIN1=L 17 25 33 k GAIN0=GAIN1=H Vripple=0.2Vp-p,C =0.47F BYP Supply ripple rejection ratio PSRR 62 68 dB f=1kHz, BTL Output noise Vnoise 16 80 Vrms BTL, f=1kHz, 20-20kHz S/N S 105 dB BTL, Po=1W, BTL, f=1kHz, 20-20kHz N Output DC offset voltage Vo 0 25 mV <Control terminal ( SHUTDOWN ,GAIN0,GAIN1)> Hi level VIH 2.0 VDD V Control terminal Input voltage Lo level VIL 0 0.8 V *1: B.W.=40030kHz BTLThe voltage between 4pin and 8pin, 14pin and 18pin. Control terminals settings SHUTDOWN IC condition Hi Active Lo Shutdown GAIN0 GAIN1 Gain Input resistance Lo Lo 6dB 90k (TYP.) Lo Hi 10dB 70k (TYP.) Hi Lo 15.6dB 45k (TYP.) Hi Hi 21.6dB 25k (TYP.) www.rohm.com 2010.07 - Rev.A 2/16 2010 ROHM Co., Ltd. All rights reserved.