FAN7024MU

www.fairchildsemi.com FAN7024 Features • • • • • • • • 675mW CMOS Mono Power Amplifier with Shutdown Description The FAN7024 is a bridge connected audio power amplifier capable of delivering 675mW of continuous average power to an 8Ω load with less than 0.3%(THD) from a 5V power supply. The FAN7024 requires few external components and operates on low supply voltage from 2.3V to 5.5V. Since the FAN7024 does not require output coupling capacitors, bootstrap capacitors, or snubber networks, it is ideally suited for low power portable systems that require minimum volume and weight. The FAN7024 features an externally controlled gain and low power consumption shutdown mode (0.1uA,typ.). Additional FAN7024 features include thermal shutdown protection, unity gain stability, and external gain set. 8MSOP 1 Continuous Average Power is 675mW (8Ω) Low THD: Typical 0.3% @ Po=500mW PSRR@217Hz, Input Terminated : 60dB Do Not Need Output Coupling Capacitor or Bootstrap Capacitor Low Shutdown Current: Typical 0.1µA Shutdown: High Active Click & Pop Suppression circuitry Built in TSD Circuit Typical Applications • Cellular Phone • PDA • Portable Audio Systems 10MLP 1 BOTTOM VIEW Internal Block Diagram 4 3 IN- VO1 5 IN+ 20KΩ 20KΩ 2 BP 100KΩ VDD/2 8 VO2 6 VDD BIAS & Shutdown 100KΩ 1 SD 7 GND Rev. 1.0.0 ©2003 Fairchild Semiconductor Corporation FAN7024 Pin Assignments VO2 GND VDD VO1 8 7 6 5 VO2 NC VDD NC 10 9 8 7 6 1 2 3 4 5 024 YWW 1 SD 2 BP 3 IN+ 4 IN- SD BP GND IN+ IN- VO1 8MSOP 10MLP(BOTTOM VIEW) Pin Definitions Pin Number 1(1) 2(2) 3(4) 4(5) 5(6) 6(8) 7(3) 8(10) Pin Name SD BP IN+ INVO1 VDD GND VO2 Pin Function Description ( ) : 10MLP Shutdown. Hold high to shutdown, hold low for normal operation Bypass. Tap to voltage divider for internal mid-supply bias Noninverting input Inverting input Power amplifier output1 Supply voltage input Ground connection for circuitry Power amplifier output2 2 FAN7024 Absolute Maximum Ratings (Note 2) Parameter Maximum Supply Voltage Input Voltage Power Dissipation Storage Temperature Junction Temperature Thermal Resistance Junction to Ambient Symbol VDD VIN PD TSTG TJ Rthja Value 6.0 -0.3 ~ VDD+0.3 Internally Limited -65 ~ +150 150 190 166 50 °C/W Unit V V W °C °C 8MSOP 10MLP, Single-Layer 10MLP, Multi-Layer Remark Recommended Operating Conditions (Note 2) Parameter Operating Supply Voltage Operating Temperature Symbol VDD TOPR Min. 2.3 -40 Typ. Max. 5.5 85 Unit V °C 3 FAN7024 Electrical Characteristics(Note1,2) (RL = 8Ω, Ta = 25°C, unless otherwise specified) Parameter Symbol Conditions Min. Typ. Max. Unit VDD = 5.0V, UNLESS OTHERWISE SPECIFIED Quiescent Power Supply Current Shutdown Current Output Offset Voltage Output Power Total Harmonic Distortion+Noise IDD ISD VOS PO THD+N VIN = 0V,IO = 0A VSD = VDD VIN = 0V THD = 1%(Max.), f = 1kHz PO = 500mWrms, Av=6dB, 20Hz