TA7251BP

TA7250,51BP TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA7250BP,TA7251BP 30W BTL Audio Power Amplifier The TA7250BP, TA7251BP are BTL audio power amplifier for consumer applications. This IC provides high output power of 23W and also provides wide output power band width. Normal (TA7250BP) and reverse (TA7251BP) for easier layout design of PC−board when used in BTL−stereo application. Features · High output power : POUT (1) = 23W (typ.) (VCC = 13.2V, f = 1kHz, THD = 10%, RL = 4Ω) : POUT (2) = 30W (typ.) (VCC = 13.2V, f = 1kHz, THD = 10%, RL = 2Ω) Weight: 4.04g (typ.) · Excellent output power band width : POUT (3) = 18W (typ.) (VCC = 13.2V, f = 50Hz~20kHz, THD = 1%, RL = 4Ω) · Low distortion : THD = 0.015% (typ.) (VCC = 13.2V, f = 1kHz, POUT = 4W, RL = 4Ω) · Built in protector circuit : Thermal shout down, over voltage protection (typ. VCC = 21V) ASO protection (RL short, Out to GND, Out to VCC) · Operating supply voltage range: VCC (opr.) = 9~18V 1 2002-10-30 Block Diagram TA7250,51BP 2 2002-10-30 TA7250,51BP Application Information (this explanatory terminal number is for TA7250BP) 1. Voltage gain The closed loop voltage gain: GV is determined by Rf1, Rf2 and R0. If Ro≫Rf1 > Rf2 GV≒20ℓog Rf1 Rf2 +6 (dB) (R0 is established 20kΩ) Care must be taken, sine the current “I” flows to Rf1 and Rf2 from quiescent output voltage at pin(12) / (7) and it is impossible decrease so much Rf1 and Rf2. When GV = 40dB, it is recommended to use Rf1 for ...