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| Ordering number : ENN*7873 LA47503 Overview Monolithic Linear IC For Car Audio BTL 4ch (50Wx4) Power IC The LA47503 is a BTL 4ch (50Wx4) power IC for car audio. Functions * Maximum output display 48Wx4 (VCC = 14.4V, 4, 1kHz, average measurement) * 43Wx4 (VCC = 14.4V, 4, 1kHz) * Equipped an electric mirror noise control pin. * Built-in mute function. * Built-in stand-by SW. * Various types of built-in protection circuits (Air fault, ground fault, load short, over voltage and heat protections) * GND open ground fault resistance amount 16V. Specifications Maximum Ratings at Ta = 25C Parameter Maximum power supply voltage Maximum output current Allowable power dissipation Operating ambient temperature Storage ambient temperature Heat resistance between junction part and case Symbol VCC max1 VCC max2 IO peak Pd max Topr Tstg j-c Infinite heatsink When signal is ON When signal is OFF Conditions Ratings 18 26 4.5/ch 50 -40 to +85 -40 to +150 1 Unit V V A W C C C/W Operating Conditions at Ta = 25C Parameter Recommended supply voltage Recommended load resistance Operating supply voltage range Symbol VCC RL VCC op Conditions Ratings 14.4 4 9 to 18 Unit V V 52504 JO IM No.7873-1/3 LA47503 Electrical Characteristics at Ta = 25C, VCC = 14.4V, f = 1kHz, RL = 4, Rg = 600 Parameter Current when signal is OFF Stand-by current Output offset voltage Voltage gain Voltage gain difference Symbol ICCO Ist Vnoffset VG VG PO1 Output electric power PO max1 PO max2 All higher harmonics distortion factor Channel separation Ripple rejection ratio Output noise voltage Mute attenuation THD Chsep SVRR Vno Ma THD = 10% VCC = 13.7V, VIN = 5Vrms VIN = 2.5Vrms PO = 4W VO = 0dBm, Rg = 10k fr = 100Hz, Vr = 0dBm, Rg = 0 Rg = 0 B.P.F. = 20Hz to 20kHz VO = 20dBm 70 55 50 RL = , Rg = 0 Vst = 0V Rg = 0 VO = 0dBm -150 31 -1 24 29 43 48 0.1 70 70 80 90 200 0.4 32 Conditions Ratings min typ 200 max 350 10 +150 33 +1 Unit mA A mV dB dB W W W % dB dB Vrms dB Package Dimensions unit : mm 3236A No.7873-2/3 LA47503 PS No.7873-3/3 |
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