AN7170

ICs for Audio Common Use AN7170 18W Audio Power Amplifier Circuit s Overview The AN7170 is an integrated circuit manufactured by high voltage process designed for power amplifier of bus, track amplifier. Wide operating supply voltage range with output of 18W at 26.4V. It can be widely used for bus, truck amp., car stereo, home entertainment stereo set and TV sound multiplex output. 15.0±0.3 3.6±0.2 5.85±0.25 1.0±0.2 11 10 9 8 7 6 5 4 3 2 1 2.54 Unit : mm 4.7±0.6 2.7±0.4 1.8R 30.0±0.3 24.0±0.3 1.26±0.25 s Features • High output power : PO =18W • High surge voltage : VCC (surge) = 60V (max.) • Wide supply voltage range : VCC (opr) = 8 ~ 35V • Incorporating protection circuits (overvoltage, 0.95±0.25 overcurrent, temperature, load short) • Incorporating automatic operating point stabilizer circuit • Low distortion, low 1/f noise 3.5±0.25 5.5±0.3 7.5±0.3 0.1 0.35 + 0.05 – 0.35±0.25 11-Lead SIP Package (HSIP011-P-0000) s Block Diagram VCC 9 11 Ripple Filter Temperature Compensation Surge Over Current Protection 4 7 Input Circuit Driver Circuit Output Circuit 1 GND 8 (Input) 6 5 3 GND (Output) 0.7±0.1 AN7170 s Absolute Maximum Ratings (Ta= 25˚C) Parameter Supply Voltage (at no signal) Supply Voltage (at operation) Peak Supply Voltage Note 1) Supply Current Power Dissipation Note 2) Operating Ambient Temperature Storage Temperature Note 1) Pulse Voltage application t = 0.2s Note 2) Ta = 25˚C ( θj – c = 4˚C/W) Symbol VCC VCC VCC (surge) ICC PD Topr Tstg ICs for Audio Common Use Rating 35 30 60 4 31.25 – 30 ~ + 75 – 55 ~ + 150 Unit V V V A W ˚C ˚C s Electrical Characteristics (VCC = 26.4V, f = 1kHz, Ta= 25˚C) Parameter (RL= 8Ω) Quiescent Circuit Current Voltage Gain No Distortion Maximum Output Total Harmonic Distortion Output Noise Voltage Ripple Rejection Ratio Input Impedance (RL= 4Ω) No Distortion Maximum Output THD= 1% PO THD= 10% 13 18 W W ICQ GV PO THD Vno RR Zi Vi= 0mV Vi= 3mV THD= 1% THD= 10% Vi= 3mV Rg= 10kΩ, DIN A Filter Vi= 0mV, Rg= 0Ω 40 51 8 10.5 75 53 9.5 12 0.1 0.7 40 30 0.7 1.5 160 55 mA dB W W % mV dB kΩ Symbol Condition min. typ. max. Unit s Pin Descriptions Pin No. 1 2 3 4 5 6 Output NC GND (Output) Bootstrap Phase Compensation Negative Feedback Pin Name Pin No. 7 8 9 10 11 Input GND (Input) Ripple Filter NC VCC Pin Name ICs for Audio Common Use AN7170 PD – Ta 40 (1) Tc = Ta (θj – c = 4˚C/W) (2) With a 100cm2 × 3mm Al heat sink (black color coated) or a 200cm2 × 2mm Al heat sink (not lacquered) (3) With a 100cm2 × 2mm Al (1) heat sink (not lacquered) 24 PO – VCC 100 5% 1% Output Power PO (W) 16 10 % PO, PD, THD – Vi Output Power PO (W), Power Dissipation PD (W), Total Harmonic Distortion THD (%) VCC = 24V, RL = 4Ω f = 1kHz, GV = 53dB PO 10 3 1 0.3 0.1 THD PD RL = 4Ω RL = 8Ω 20 THD = 10% 30 32 Power Dissipation PD (W) 12 16 (2) 1% 8 8 (3) 4 5% 24 0.03 0.01 0.1 0 0 40 80 120 160 200 0 0 12 16 20 24 28 32 0.3 1 3 10 30 100 Ambient Temperature Ta (˚C) Supply Voltage VCC (V) Input Voltage Vi (mV) PO, PD, THD – Vi Total Harmonic Distortion THD (%), Voltage Gain GV (dB) 100 Output Power PO (W), Power Dissipation PD (W) 30 10 3 1 0.3 0.1 THD 0.1 0.3 1 3 10 30 THD PD PO PO GV = 53dB GV = 46dB VCC = 24V, RL = 8Ω f = 1kHz 100 30 Total Harmonic Distortion THD (%) 10 3 1 0.3 0.1 4 2 GV, THD – f GV = 53dB GV = 46dB VCC = 24V RL = 8Ω PO = 2W Voltage Gain GV (dB) GV, THD – f VCC = 24V RL = 4Ω PO = 4W GV = 53dB 0 –2 –4 –6 2.0 1.5 1.0 GV Total Harmonic Distortion THD (%) 0 GV –2 –4 1.5 1.0 0.5 0 10 100 THD 1k 10k 100k 10 100 0.03 0.01 0.03 0.01 100 0.5 THD 1k 10k 0 100k Input Voltage Vi (mV) Frequency f (Hz) Frequency f (Hz) PD – PO 16 f = 1kHz 14 12 VCC = 30V 10 8 6 4 2 0 28V 24V 30V 28V 24V 22V 16V 16V 0 4 22V 8 12 16 20 24 28 32 RL = 4Ω RL = 8Ω Power Dissipation PD (W) Output Voltage PO (W) AN7170 s Application Circuit + – ICs for Audio Common Use VCC = 26.4V 100µF + – 9 11 150Ω 4 47µF +– 0.033µF 1500pF 8 1000µF Input 7 AN7170 1 150Ω + 0.1µF – 1000µF 6 *1 + – 100µF 5 3 *2 2.2Ω 4Ω or 8Ω *1. *2. 82Ω at GV = 46dB, R = 0 at GV = 53dB 12pF at GV = 46dB, 8pF at GV = 53dB (C = 0 is allowable for frequency characteristics adjustment in high band) s Printed Circuit Board Layout Scale : 1/1 VCC 1000µF + – AN7170 0.1µF 1 12pF 47µF 150Ω 82Ω + – + – 100µF 11 2.2Ω µF 10 + – 150Ω 00 OUT 0.033µF + – IN 100µF 1500pF