NTE1396 Integrated Circuit 20W Bridge Booster for Car Radio Description: The NTE1396 is a Class B dual audio power amplifier specifically designed for car radio applications. Power booster amplifiers are easily designed using this device that provides a high current capability (up to 3.5A) and that can drive very low impedance loads obtaining an output power of more than 20W. The NTE1396 has high reliability and guarantees complete safety during operation due to protection against: D Output DC and AC Short Circuit to GND or Across the Head D Overrating Chip Temperature (+150°C) D Polarity Inversion D Load Dump Voltage Surge D Fortuitous Open GND D Very Inductive Loads Absolute Maximum Ratings: Operating Supply Voltage, VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V DC Supply Voltage, VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28V Peak Supply Voltage (for 50ms), VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V Output Peak Current (Note 1), IO Non–Repetitive (t = 0.1ms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5A Repetitive (f > 10Hz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5A Power Dissipation (TC = +60°C), Ptot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30W Operating Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C Maximum Thermal Resistance, Junction–to–Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3°C/W Note 1. Max output current is internally limited. Electrical Characteristics: (TA = +25°C, Gv = 50dB, Rth(HS) = 4°C/W, unless otherwise specified) Parameter Supply Voltage Output Offset Voltage (Between Pin8 & Pin10) Total Quiescent Drain Current Output Power Distortion Input Sensitivity Symbol Test Conditions Min Typ 8 – 18 V VS = 14.4V – – 150 mV VS = 13.2V – – 150 mV VS = 14.4V, RL = 4Ω – 75 150 mA VS = 13.2V, RL = 3.2Ω – 70 160 mA VS = 14.4V, RL = 4Ω 18 20 – W VS = 14.4V, RL = 3.2Ω 20 22 – W VS = 13.2V, RL = 3.2Ω 17 19 – W VS = 14.4V, RL = 4Ω, PO = 50mW to 15W – – 1 % VS = 13.2V, RL = 3.2Ω, PO = 50mW to 13W – – 1 % f = 1kHz, PO = 2W – 9 – mV RL = 3.2Ω – 8 – mV VS VOS Id PO d Vi d = 10%, f = 1kHz f = 1kHz RL = 4Ω Max Unit Input Resistance Ri f = 1kHz 70 – – kΩ Low Frequency Roll Off (–3.2Ω) fL RL = 3.2Ω – – 40 Hz High Frequency fH RL = 3.2Ω 20 – – kHz Closed Loop Voltage Gain Gv f = 1kHz – 50 – dB Total Input Noise Voltage eN Rg = 10KΩ, Note 2 – 3 10 µV Supply Voltage Rejection SVR Rg = 10KΩ , C4 = 10µF, fripple = 100Hz, Vripple = 0.5V 45 55 – dB PO = 20W, RL = 4Ω – 60 – % PO = 22W, RL = 3.2Ω – 60 – % VS = 13.2V, f = 1kHz, PO = 19W, RL = 3.2Ω – 58 – % VS = 14.4V, RL = 4Ω, f = 1kHz, Ptot = 13W 100 110 – °C VS = 14.4V, RL = 4Ω – – 2 V VS = 13.2V, RL = 3.2V – – 2 V Efficiency Thermal Shut–Down Case Temperature Output Voltage with One Side of the Speaker Shorted to GND η Tsd VOSH VS = 14.4V , f = 1kHz Note 2. Bandwidth filter 22Hz to 22kHz Pin Connection Diagram (Front View) 11 Bootstrap 1 10 Output 1 9 (+) VS 8 Output 2 7 Bootstrap 2 6 GND 5 (+) Input 2 4 (–) Input 2 3 SVRR 2 (–) Input 1 1 (+) Input 1 .791 (20.1) .196 (4.99) .062 (1.52) .110 (2.79) Note .150 (3.81) Dia Max .689 (17.5) .696 (17.68) 1 11 .067 (1.7) .008 (.203) .858 (21.79) .200 (5.08) .169 (4.29) NOTE: Tab connected to Pin6