AN5276

ICs for Audio Common Use AN5276 5 W × 2-ch (19V, 8 Ω) power amplifier with variable audio output and volume control Unit : mm 29.75±0.30 28.0±0.3 20.0±0.3 s Features • Few external components : • No Boucherot cells(output C, R) • No Bootstrap Capacitors • No Negative Feeback Capacitors • Built-in muting circuit • Built-in stand-by circuit • Built-in various protection circuits (Load-short, thermal, over-voltage and current) • High ripple rejection(55 dB) • Compatible with AN5275, AN5277 • Operating voltage range 10 V to 24 V(19 V typ.) R1.8 0.6 +0.10 0.25 –0.05 2.54 1 0.6 –0.05 (1.27) (10.0) +0.15 (12.5) 1.2±0.1 1.45±0.15 (1.2) 19.1±0.3 21.9±0.3 HSIP012-P-0000A s Applications • TV s Block Diagram Att. Ripple filter Att. Con Protection circuit • Temperature • Over-voltage • Over-current • Load short 10 GND 4 (Input) Out Ch.2 GND 9 (Output) N.C. Ch.1 In RF Ch.2 In N.C. Mute 11 Out Ch.1 VCC Standby 12 1 2 3 5 6 7 8 1.80±0.15 3.5±0.3 29.6±0.3 The AN5276 is a monolithic integrated circuit designed for 5.0 W (19 V, 8 Ω) output audio power amplifier. It is a dual channel SEPP IC suitable for stereo operation in TV application. 12 (10.0) s Overview 7.7±0.3 φ3.6 (1.27) (1.3) 1 AN5276 s Pin Descriptions Pin No. 1 2 3 4 5 6 N.C. Ch.1 input Ripple filter Input GND Ch.2 input N.C Descriptions Pin No. 7 8 9 10 11 12 ICs for Audio Common Use Descriptions Ch.2 output Mute Output GND VCC Standby Ch.1 output s Absolute Maximum Ratings Parameter Supply voltage Supply current Power dissipation *2 *1 Symbol VCC ICC PD Topr Tstg Rating 26.0 4.0 37.5 −25 to +75 −55 to +150 Unit V A W °C °C Operating ambient temperature Storage temperature *1 Note) *1 : Except these items, all other measurements are taken at Ta = 25 °C. *2 : Ta = 75 °C. s Recommended Operating Range Parameter Supply voltage Symbol VCC Range 10.0 to 24.0 Unit V 2 ICs for Audio Common Use s Electrical Characteristics at VCC = 19 V, f = 1 kHz, RL = 8 Ω, Ta = 25 °C Parameter Quiescent current Output end noise voltage Voltage gain Total harmonic distortion Maximum Output Power Maximum Output power Ripple rejection ratio Channel balance Muting Ratio Muting control voltage Standby control voltage 'on' Standby control voltage 'off' Channel crosstalk *1 *1 AN5276 Symbol ICQ VNO GV THD PO PO RR CB MR VMUTE Conditions VIN = 0 mV No input, Rg = 10 kΩ VIN = 57 mV VIN = 57 mV VCC = 22 V, THD = 10 % VCC = 19 V, THD = 10 % Vr = 1 Vrms fr = 120 Hz, Rg = 10 kΩ VIN = 57 mV VIN = 57 mV VIN = 57 mV, MR ≥ 70 dB Min   32  5.6 4.0 45 −1.0 70 3.0  8.5 50 Typ 35 0.22 34 0.2 7.0 5.0 55 0 80    60 Max 70 0.4 36 0.4    1.0   5.0   Unit mA mV dB % W W dB dB dB V V V dB VSTD-ON No input, ICC ≤ 0.1 mA VSTD-OFF No input, ICC ≥ 17 mA CT VIN = 57 mV, Rg = 10 kΩ Note) *1 : For this measurement, use the 20 Hz to 20 kHz (12 dB/OCT) filter. 3 AN5276 s Terminal Equivalent Circuits Pin No. 1 2 2 200 Ω 400 Ω Equivalent circuit  ICs for Audio Common Use Description Not connected Ch.1 input This is the amplifier input pin. DC voltage (V)  0 30 kΩ 4 3 10 Ripple filter This is the pin to connect the positive terminal of a ripple filter capactior. VCC-1.5VBE 30 kΩ 3 20 kΩ 4 4 5 5 200 Ω  15.7 kΩ 15 kΩ Input GND Input ground pin 400 Ω Ch.2 input This is the amplifier input pin. 0  30 kΩ 4 6  Not connected  4 ICs for Audio Common Use s Terminal Equivalent Circuits (continued) Pin No. 7 Equivalent circuit Description Ch.2 output Ch.2 output pin AN5276 DC voltage (V) VCC/2 10 Pre amp. Driver Cct 7 600 Ω VCC/2 9 30 kΩ 8 10 Mute Mute input pin. Mute 'on' = 5 V Mute 'off' = 0 V  3 kΩ 10 kΩ 8 200 Ω 3 kΩ 4 9 10   Output GND Ch.1 & Ch.2 output ground. VCC This is the power supply pin. 0 19 V(typ.) 5 AN5276 s Terminal Equivalent Circuits (continued) Pin No. 11 10 ICs for Audio Common Use Equivalent circuit Description Standby This is the standby control pin. DC voltage (V)  11 5 kΩ 5 kΩ 3 kΩ 4 12 Ch.1 output Ch.1 output pin 10 VCC/2 Driver Cct Pre amp. 12 600 Ω 30 kΩ 9 6 ICs for Audio Common Use s Application Circuit Example AN5276 VCC 100 µF R.F. VCC 1000 µF 1 5V STB off STB on STB 11 VIN1 1 µF 10 kΩ 8 2 12 1000 µF SP 8Ω VIN2 1 µF 10 kΩ 5V 5 7 1000 µF SP 8Ω Mute on Mute off 8.2 kΩ Mute 8 10 µF 4 1 6 9 Output GND N.C. STB off STB on Mute off Mute on VCC 0V 0V 5V s Usage Notes 1) External heatsink is needed when used. External heatsink should be fixed to the chassis. 2) Fin of the IC can be connected to GND. 3) Please prevent output to VCC short and output to GND short. 4) The temperature protection circuit will operate at Tj around 150 °C. However, if temperature decreass, the protection circuit would automatically be deactivated and resume normal operation. Input GND N.C. 7 AN5276 s Technical Information • PD  Ta curves of HSI P012-P-0000A PD  T a 80 ICs for Audio Common Use 70 62.5 W 60 Power dissipation PD (W) (1) 50 (1) Tc = Ta, 62.5 °C/W(θj-c = 2 °C/W) (2) 20.83 W(θf = 4.0 °C/W) With a 100cm2 × 3mm Al heat sink (black colour coated) or a 200cm2 × 2mm Al heat sink (not lacquered) (3) 15.63 W(θf = 6.0 °C/W) With a 100cm2 × 2mm Al heat sink (not lacquered) (4) 3.0 W at Ta = 25 °C(θj-a = 42 °C/W) Without heat sink 40 30 20.8 W (2) 15.6 W 10 3.0 W 0 0 25 50 75 100 125 150 (4) (3) 20 Ambient Temperature Ta (°C) 8