Features
• Smaller-sized package as compared with the STK450 series.
Built-in muting circuit to cut off various kinds of shock noise•
• Greatly reduced heat sink due to case temperature 125°C guaranteed.
• Excellent cost performance.
Maximum Ratings at Ta=25°C unit
Maximum Supply Voltage Vccmax ±39 V
Thermal Resistance Qj-c 2.6 oc:;/W
Junction Temperature Tj 150 oc
Operating Case Temperature Tc 125 oc Storage Temperature Tstg -30 to +125 oc Available Time for Load Shorted ts Vcc=±26V,RL=8ohm, 2 sec f=50Hz,P0=25W
Operating Conditions at Ta=25°C unit
Recommended Operating Voltage Vee ±26 V
Recommended Load Resistance
RL 8 ohm Operating Characteristics at
Ta=25°C,Vcc=±26V,RL=8ohm,Rg=600ohm,VG=40dB,atspecified test circuit (based on Sample Application Circuit) min typ max unit
Quiescent Current Icco Vcc=±31V 20 40 100 mA Output
Power Po(l) THD=0.4%,f=20Hz to 20kHz 25 W Total
Harmonic Po(2) Vcc=±22V,THD=l.0%, 25
RL=4ohm,f=lkHz
Total Harmonic Distortion
THD Po=l.OW,f=lkHz 0.3 %
Frequency Characteristic
fL,fH P0=1.OW,-3dB 20to50k Hz Input
Resistance ri P0=1.OW,f=lkHz 55 kohm
Output Noise Voltage
VNO Vcc=±31V,Rg=l0kohm 1.2 mVrms
Middle Point Voltage
VN Vcc=±31V -70 0 70 mV
Muting Voltage VM -2 -5 -10 V
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