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| ICs for TV AN5279 Mono channel SEPP audio power amplifier IC s Overview The AN5279 is a monolithic integrated circuit designed for 5.0 W (19 V, 8 ) output audio power amplifier. It is a mono channel SEPP IC suitable for TV application. 2.650.10 Unit : mm 8.40.25 5.80.25 1.50.25 6.30.3 7.10.25 3.750.25 0.500.10 1.200.25 9 19.90.10 18.30.25 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) * Operating voltage range 10 V to 24 V(19 V typ.) 3.30.1 1 0.10.05 0.45 -0.05 +0.10 5.60.25 HSIP009-P-0000 s Applications * TV s Block Diagram Att. Ripple filter 1 GND 2 (Input) 3 4 5 Att. Con Protection circuit * Temperature * Over-voltage * Over-current * Load short 6 GND 7 (Output) 8 N.C. Out RF Mute VCC In Standby 9 1.70.25 1.70.25 2.54 22.30.3 15.0 1 AN5279 s Pin Descriptions Pin No. 1 2 3 4 5 Descriptions Ripple filter Input GND Input Not connected Output Pin No. 6 7 8 9 Mute Output GND VCC Standby Descriptions ICs for TV s Absolute Maximum Ratings Parameter Supply voltage Supply current Power dissipation *2 *1 Symbol VCC ICC PD Topr Tstg Rating 26.0 1.6 6.2 -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 with infinite heat sink. s Recommended Operating Range Parameter Supply voltage Symbol VCC Range 10.0 to 24.0 Unit V 2 ICs for TV s Electrical Characteristics at VCC = 19 V, f = 1 kHz, RL = 8 , Ta = 25 C Parameter Quiescent current Output end noise voltage Voltage gain Total harmonic distortion Maximum Output Power Maximum Output power Ripple rejection ratio Muting Ratio Muting control voltage Standby on voltage Standby off voltage *1 *1 AN5279 Symbol ICQ VNO GV THD PO1 PO2 RR MR VMUTE Conditions VIN = 0 mV No input, Rg = 10 k VIN = 57 mV VIN = 57 mV VCC = 19 V, THD = 10 % VCC = 22 V, THD = 10 % Vr = 1 Vrms fr = 120 Hz, Rg = 10 k VIN = 57 mV, VMUTE > 3.0 V VIN = 57 mV, MR > 70 dB Min 32 4.0 5.6 45 70 3.0 8.5 Typ 25 0.22 34 0.2 5.0 7.0 55 80 Max 50 0.4 36 0.4 5.0 Unit mA mV dB % W W dB dB V V V VSTD-ON No input, ICC 0.1 mA VSTD-OFF No input, ICC 9.5 mA Note) *1 : For this measurement, use the 20 Hz to 20 kHz (12 dB/OCT) filter. 3 AN5279 s Terminal Equivalent Circuits Pin No. 1 Equivalent circuit Description Ripple Filter This is the pin to connect the positive terminal of a ripple filter capacitor. ICs for TV DC voltage (V) VCC - 1.5VBE 8 30 k 1 20 k 15.7 k 15 k 2 2 3 3 200 400 Input GND Input ground pin Input This is the amplifier input pin. 0 0 30 k 2 4 5 8 Not connected Output Output pin VCC/2 Pre amp. Driver Cct 5 600 VCC/2 7 30 k 4 ICs for TV s Terminal Equivalent Circuits (continued) Pin No. 6 8 AN5279 Equivalent circuit Description Mute Mute input pin. Mute 'on' = 5 V Mute 'off' = 0 V DC voltage (V) 3 k 10 k 6 200 3 k 2 7 8 9 Output GND Output ground. VCC This is the power supply pin. Standby Standby control pin. Standby mode = 0 V Operational mode = VCC 0 19 V(typ.) 8 9 5 k 5 k 3 k 2 5 AN5279 s Application Circuit Example ICs for TV VCC 100 F R.F. VCC 1000 F 1 5V Operational mode Standby mode STB 9 VIN 1 F 10 k 5V 8 3 5 1000 F SP 8 Mute on Mute off 8.2 k Mute 6 10 F 4 2 7 Output GND N.C. Operational mode Standby mode 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", "Output to GND short" and "Reverse Insertion" to avoid damaging the IC. 4) The temperature protection circuit will operate at Tj around 150 C. However, if temperature decreases, the protection circuit would automatically be deactivated and resume normal operation. 6 Input GND ICs for TV s Technical Information * PD Ta curves of HSI P009-P-0000 PD T a 11 10.4 W 10 9 (4) (1) No heat sink (2) 5.5 cm2 x 5.0 cm2 al board (t = 1 mm) (3) 7.5 cm2 x 7.5 cm2 al board (t = 1 mm) (4) Infinity heat sink Pmax < 7 6 5 4 3 2.5 W 2 1 0 0 20 40 60 80 100 120 140 160 (1) 4.14 W 3.36 W (3) (2) Tjmax - Ta Rth AN5279 Power dissipation PD (W) 8 Ambient Temperature Ta (C) 7 |
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