Preliminary Datasheet LPA8003 3-Walts Mono Filter-free Audio Power Amplifier General Description The LPA8003 is an audio power amplifier designed for portable communication device applications such as mobile phone applications. The LPA8003 is capable of delivering 3W of continuous average power to an 8 BTL and with less than 10% distortion (THD+N) from a 5.0V power supply.The LPA8003 provides high quality audio while requiring few external components and minimal power consumption. It features a low-power shutdown mode, which is achieved by driving the SHUTDOWN pin with logic low. The LPA8003 contains circuitry to prevent from ”pop and click” noise that would otherwise occur during turn-on and turn-off transitions. For maximum flexibility, the LPA8003 provides an externally controlled gain (with resistors), as well as an externally controlled turn-on and turn-off times (with the bypass capacitor). Features 2.5-5.5V operation 65dB PSRR at 217Hz, VDD=5V 0.1µA ultra low current shutdown mode Improved pop & click circuitry Unique Modulation Scheme Reduces EMI Emissions 0.1-µA Shutdown Current No output coupling capacitors, snubber networks or bootstrap capacitors required External gain configuration capability Shutdown Pin has 1.8V Compatible Thresholds BTL output can drive capacitive loads RoHS compliant and 100% lead(Pb)-free . Applications PMP,PSP, Game, Data-Bank Cellular and Smart mobile phone The LPA8003 is available in a ESOP8 package. Marking Information Order Information LPA8003 - □ □ □ Part LPA8003SOF Package SOP8 LPA8003SPF ESOP8 F: Pb-Free Package Type SP: ESOP8 SO:SOP8 Marking LPS LPA8003 YWXXX LPS LPA8003P YWXXX MPQ 100/T 100/T Typical Application Circuit LPA8003–00 Version 1.0 Datasheet Sep.-2013 www.lowpowersemi.com Page 1 of 7 Preliminary Datasheet LPA8003 Functional Pin Description P a c k a g e Ty p e Pin Configurations SOP8/ESOP8 Pi n Desc ript ion Pin No. Pin Name 1 SHDN 2 3 BYPASS 4 5 6 7 8 -IN VO1 VDD GND VO2 +IN I/O DESCRIPTION I The device enters in shutdown mode when a High level Voltage is applied on this pin I Bypass capacitor pin which provides the common mode voltage I Positive input of the first amplifier, receives the common mode voltage I Negative input of the first amplifier, receives the audio input signal. Connected to the O Negative output of the LPA8003. Connected to the load and to the feedback resistor Rf I Analog VDD input supply. Ground connection for circuitry. O Positive output of the LPA8003. Absolute Maximum Ratings Input Voltage to GND (VINA, VINB) ---------------------------------------------------------------------------- 6V Adapter Voltage to GND (VADP) ---------------------------------------------------------------------- 0.3V to 6V Supply Voltage, V -------------------------------------------------------------------------------------0.3 V to 6V Voltage at Any Input Pin -------------------------------------------------------------------------0.3 V to V +0.3 Junction Temperature, TJMAX --------------------------------------------------------------------------------------- 150°C Storage Temperature Rang, T ---------------------------------------------------------------------65°C to 150°C ESD Susceptibility -------------------------------------------------------------------------------------------2 kV Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds ----------------------------------------260°C Thermal Resistance θ (WCSP) ----------------------------------------------------------------------------- 57°C/W DD LPA8003–00 Version 1.0 Datasheet DD stg JA Sep.-2013 www.lowpowersemi.com Page 2 of 7 Preliminary Datasheet LPA8003 Electrical Characteristics Symbol Parameter Conditions Min. VOS Output offset voltage (measured differentially) Vi=0V,Av=2V/V,VDD=2.5V to 5.5V PSRR Power supply rejection ration VDD=2.5V to 5.5V IQ Quiescent current LPA8003 Typ. Max. 5 -70 VDD=5.5V, no load 5 VDD=3.6V, no load 4 VDD=2.5V, no load 3 25 mV -55 dB Shutdown Current VSHDN=0.35V, VDD=2.5V to 5.5V PO Output Power VDD=5V,THD=1%,F=1KHz,RL=4Ω 2.4 W VDD=5V,THD=1%,F=1KHz,RL=8Ω 1.8 W VDD=5V,THD=10%,F=1KHz,RL=4Ω 3.0 W VDD=5V,THD=10%,F=1KHz,RL=8Ω 2.1 W P-Channel Current Limit RDS(ON) Static drain-source on-state resistance 1.2 400 VDD=3.6V, no load 500 VDD=2.5V, no load 700 THD+N f=1KHz f=1KHz 0.130 VDD=2.5V,,Po=0.2W,RL=8 f=1KHz 0.163 VDD=3.6V,Inputs ac-grounded with Ci=2uF F=217Hz,Vripple)= 200mVpp CMRR Common mode rejection ratio VDD=3.6V, Vic=1Vpp F=217Hz Zt Start-up time from shutdown VDD=3.6V kSVR LPA8003–00 Version 1.0 Datasheet Sep.-2013 www.lowpowersemi.com m 0.123 VDD=3.6V,,Po=0.5W,RL=8 Supply ripple rejection ratio µA A VDD=5.5V, no load VDD=5V,,Po=1W,RL=8 Total harmonic distortion plus noise 2.0 mA ISHDN ILIM 0.1 Unit -68 % dB -58 dB 45 mS Page 3 of 7 Preliminary Datasheet LPA8003 Typical Operating Characteristics LPA8003–00 Version 1.0 Datasheet Sep.-2013 www.lowpowersemi.com Page 4 of 7 Preliminary Datasheet LPA8003 Layout Considerations As output power increases, interconnect resistance (PCB traces and wires) between the amplifier, load and power supply create a voltage drop. The voltage loss on the traces between the LPA8003 and the load results is lower output power and decreased efficiency. Higher trace resistance between the supply and the LPA8003 has the same effect as a poorly regulated supply, increase ripple on the supply line also reducing the peak output power. The effects of residual trace resistance increases as output current increases due to higher output power, decreased load impedance or both. To maintain the highest output voltage swing and corresponding peak output power, the PCB traces that connect the output pins to the load and the supply pins to the power supply should be as wide as possible to minimize trace resistance. The use of power and ground planes will give the best THD+N performance. While reducing trace resistance, the use of power planes also creates parasite capacitors that help to filter the power supply line. The inductive nature of the transducer load can also result in overshoot on one or both edges, clamped by the parasitic diodes to GND and VDD in each case. From an EMI stand- point, this is an aggressive waveform that can radiate or conduct to other components in the system and cause interference. It is essential to keep the power and output traces short and well shielded if possible. Use of ground planes, beads, and micro-strip layout techniques are all useful in preventing unwanted interference. As the distance from the LPA8003 and the speaker increase, the amount of EMI radiation will increase since the output wires or traces acting as antenna become more efficient with length. What is acceptable EMI is highly application specific. Ferrite chip inductors placed close to the LPA8003 may be needed to reduce EMI radiation. The value of the ferrite chip is very application specific. Ferrite chip inductors placed close to the LPA8003 may be needed to reduce EMI radiation. The value of the ferrite chip is very application specific. LPA8003–00 Version 1.0 Datasheet Sep.-2013 www.lowpowersemi.com Page 5 of 7 Preliminary Datasheet LPA8003 Packaging Information SOP8 (Top View) <SOP-8> Side View 1 Symbol A A1 A2 b c D e E E1 L Dimensions In Millimeters Min. Max. 1.350 1.750 0.100 0.250 1.350 1.550 0.330 0.510 0.170 0.250 4.700 5.100 1.270(BSC) 3.800 4.000 5.800 6.200 0.400 1.270 0° 8° LPA8003–00 Version 1.0 Datasheet Sep.-2013 <SOP-8> Side View 2 Dimensions In Inches Min. Max. 0.053 0.069 0.004 0.010 0.053 0.061 0.013 0.020 0.006 0.010 0.185 0.200 0.050(BSC) 0.150 0.157 0.228 0.244 0.016 0.050 0° 8° www.lowpowersemi.com Page 6 of 7 LPA8003–00 Version 1.0 Datasheet Sep.-2013 Preliminary Datasheet LPA8003 www.lowpowersemi.com Page 7 of 7