AN7174K

AN7174K PANASONIC | Alldatasheet

Document overview

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Technical content

The AN7174K is an integrated circuit for 14W (13.2V, 4Ω ) output power amplifier circuit. Two BTL amplifiers are built-in on a single chip and stereo operation is possible. It is highly reliable due to protection circuits built-in. The built-in stand-by circuit makes it possible to switch the cir- cuit ON/OFF with a charge mode to power supply pin. n Features

• High output power (BTL 14W · 2)
• Stand-by circuit built-in
• Protection circuits built-in (temperature, overvoltage, VOUT – GND short, Load short, VOUT –VCC short)
• Low shock noise from power ON/OFF operation
• Fewer external parts
• Highly stable operation AN7174K Dual BTL 14W Audio Power Amplifier Circuit Unit : mm 6.33–0.5 29.6–0.3 29.96–0.3 0.6–0.21.778 ø 3.628.0–0.3 20.0–0.25 R1.8 0.6 1.2–0.1 (14.1) (4.06) 2.54–0.8 (0.25) 1.45–0.25 1.8–0.25 (1.2) 1.45–0.25 16-Lead ZIP Package with Fin (EZIP016-P-0660) Input Circuit Driver Circuit Output Circuit Input Circuit Driver Circuit Output Circuit 1612 Input Circuit Driver Circuit Output Circuit Input Circuit Driver Circuit Output Circuit 11 9 Protection CircuitStand – by Circuit GND V CC GND GND n Block Diagram

ICs for Audio Common UseAN7174K n Absolute M axim um R atings (Ta= 25˚C ) V C C V C C (surge) IC C PD Topr Tstg Supply V oltage N ote 1) Peak Supply V oltage N ote 2) Supply C urrent Pow er D issipation N ote 3) O perating A m bient Tem perature Storage Tem perature V V A W Param eter Sym bol R ating U nit 62.5 – 30 ~ + 75 – 55 ~ + 150 N ote 1) N o Signal N ote 2) Tim e= 0.2s N ote 3) R θj– c= 2˚C /W n R ecom m ended O perating R ange (Ta = 25˚C ) 8V ~ 18V Param eter Sym bol R ange O perating Supply V oltage R ange V C C Param eter Sym bol C ondition m in. typ. m ax. U nit Q uiescent C ircuit C urrent O utput N oise V oltage V oltage G ain Total H arm onic D istortion M axim um O utput Pow er (4Ω ) R ipple R ejection R atio O utput O ffset V oltage C hannel B alance Total H arm onic D istortion Total H arm onic D istortion Frequency C haracteristics Frequency C haracteristics Q uiescent C ircuit C urrent at Stand-by Pin C rosstalk IC Q V no * G V TH D PO R R * V O (offset) C B TH D TH D fC H fC L IC Q (STB Y –O N ) C T V in= 0m V V in= 0m V , R g= 10kΩ V in= 5m V V in= 5m V TH D = 10% R g= 0Ω , V in= 0m V , R ipple= 300m V , 120H z V in= 0m V V in= 5m V V in= 5m V , 100H z V in= 5m V , 10kH z V in= 5m V , –3dB dow n V in= 5m V , –3dB dow n Stand-by Pin O N V in= 5m V , R g= 10kΩ 50.5 –300 120 0.6 52.5 0.2 12.5 0.26 0.45 200 1.5 54.5 0.75 300 m A m V dB W dB m V dB kH z H z µA dB * W ith 15H z ~ 30kH z (12dB /oct) filter n Electrical C haracteristics (V C C = 13.2V , R L= 4Ω , f = 1kH z, Ta = 25˚C ) Supply V oltage V C C (V ) M axim um O utput PO (W ) 120 4 8 2016 G V, TH D – f Frequency f (H z) 100k10 1k 10k 1.0 0.8 0.6 0.4 0.2 0100 Total H arm onic D istortion TH D (% ) PO , TH D – Vin 100 0.1 0.01 Input V oltage V in (m V ) O utput Pow er PO (W ) V oltage G ain G V (dB ) 1000.1 1 10 100 0.1 0.01 Total H arm onic D istortion TH D (% ) PO – VC C V C C = 13.2V R L = 4Ω PO = 1W TH D PO TH D G V f = 1kH z TH D = 10% R L = 4Ω V C C = 13.2V R L = 4Ω f = 1kH z n Characteristics Curve

ICs for Audio Common Use AN7174K Supply V oltage V C C (V ) V oltage G ain G V (dB ) 873 4 65 11109 PD – Ta A m bient Tem perature Ta (˚C ) 1501250 7550 10025 G V IC Q – VC C 200 160 120 Supply V oltage V C C (V ) Q uiescent C ircuit C urrent IC Q (m A ) Pow er D issipation PD (W ) 204 8 12 16 G V, TH D – VC C Total H arm onic D istortion TH D (% ) (1) (2) (3) (4) Tc – Ta W ith a 100cm 2 × 3 m m A l (B lack col- or coated) or a heat sink (not lacquered) W ith a 100cm 2 × 2 m m A l W itout heat sink (R θj – c = 2˚C /W )f = 1kH z R L = 4Ω V in = 3m V 3.0W (1) (4) 20.8W (2) 15.6W (3) 62.5W TH D 200Ω 100µF 1µF IN C h.1 0.047µF 200Ω 100µF 0.47µF 1µF – + IN C h.2 G N D (Input side) 2000µF V C C =13.2V V C C Pin O U T C h.1 0.1 µF 2.2Ω 0.1µF 2.2Ω R ipple Filter Pin 200µF O U T C h.2 0.1 µF 2.2Ω 0.1µF 2.2Ω (STA N D -B Y ) 0V (stand-by m ode) +5V (N orm al O N m ode) N ote) 300m V , 120H z ripple com ponent should be applied at the m easurem ent of ripple rejection ratio. G N D G N D A N 7174K – + n Application Circuit

ICs for Audio Common UseAN7174K n Pin D escriptions Equivalent C ircuitPin N o. Pin N am e Supply Pin O utput C h.1 G N D (O utput C h.1) O utput C h.1 Stand-by G N D (Input) Supply connection pin G N D pin for C h.1 output C h.1 negative feedback pin (+) C h.1 positive-phase output pin C h.1 reverse-phase output pin N egative Feedback C h.1 G N D pin for input signal source C ircuit m ode (stand-by operation) sw itching pin D escription 6 Input C h.1 C h.1 input signal applied pin 8 C h.1 negative feedback pin (–)N egative Feedback C h.1 9 C h.2 negative feedback pin (–)N egative Feedback C h.2 11 C h.2 negative feedback pin (+)N egative Feedback C h.2

ICs for Audio Common Use AN7174K n Precautions on use 1. Therm al breaking protection The protective operation starts at the chip tem perature of 150˚C –5˚C . 2. O vervoltage protection The protective operation starts at V C C – 26V . 3. G round fault protection The protective operation starts w hen the contact resistance dropped below 0.3Ω . 4. Load shortcircuit protection The protective operation starts w hen the contact resistance dropped below 0.3Ω . 5. A tm ospheric fault protection The protective operation starts only w hen a shortcircuit betw een pins occurred. 6. TA B shortcircuit Even TA B short-circuiting w ith the G N D potential causes no breaking trouble. 7. The operation rem ains norm al even w hen the load is 2Ω . 8. W hen the chip tem perature abnorm ally rose, the tem perature protection circuit gets actuated, but it is autom atically reset w hen the chip tem perature dropped below the set level. n Pin D escriptions (C ont.) Equivalent C ircuitPin N o. Pin N am e 15 G N D (O utput C h.2) C h.2 input signal applied pinInput C h.2 G N D pin for C h.2 output D escription

13 Supply ripple rejection pinR ipple Filter

14 C h.2 reverse-phase output pinO utput C h.2 16 C h.2 positive-phase output pinO utput C h.2