® LY8895 Rev. 1.4 1.4 Watt Audio power Amplifier FEATURES GENERAL DESCRIPTION 2.5V~5.5V Power supply. Thermal shutdown Protection. Low current shutdown mode No capacitors and networks or bootstrap capacitors required Low noise during turn-on and turn-off transitions Headphone amplifier mode. Lead free and green package available. (RoHS Compliant) Space Saving Package -- 8-pin MSOP package. The LY8895 is a 1.4 Watt audio power amplifier. And the LY8895 primarily designed for high quality application in other portable communication device. It is capable of driving 8 Ω speaker load at a continuous average output of 1.4W / 10% distortion (THD+N) from a 5.0V power supply. A feature of the LY8895 amplifier to switch BTL mode and headphone mode (single-ended) is accomplished using the headphone sense pin. And the LY8895 audio amplifier features low power consumption shutdown mode. It is achieved by driving the shutdown pin with logic low. Besides the LY8895 has an internal thermal shutdown protection feature. The LY8895 amplifier was designed specifically to provide high quality output power with a minimal amount of external components. The LY8895 does not require output capacitors, and the LY8895 is ideally suited for other low voltage applications or portable electronic devices where minimal power consumption is a primary requirement. APPLICATION Portable electronic devices Mobile Phones PDAs PIN CONFIGURATION Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 1 ® LY8895 Rev. 1.4 1.4 Watt Audio power Amplifier PIN DESCRIPTION SYMBOL PIN No. DESCRIPTION MSOP SHUTDOWN 1 Shutdown the device.(when low level is active the pin) BYPASS 2 Bypass pin HP SENSE 3 Headphone sense pin -IN 4 Negative input Vo1 5 Negative output VDD 6 Power supply GND 7 Ground Vo2 8 Positive output APPLICATION CIRCUIT Figure 1. Audio Amplifier Typical Application Circuit Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 2 ® LY8895 Rev. 1.4 1.4 Watt Audio power Amplifier ABSOLUTE MAXIMUN RATINGS* PARAMETER Supply Voltage Operating Temperature Input Voltage Storage Temperature Power Dissipation ESD Susceptibility Junction Temperature Soldering Temperature (under 10 sec) SYMBOL VDD TA VI TSTG PD VESD TJMAX TSOLDER RATING 6.0 -40 to 85 (I grade) -0.3V to VDD +0.3V -65 to 150 Internally Limited 2000 150 260 UNIT V ℃ V ℃ W V ℃ ℃ DC ELECTRICAL CHARACTERISTICS (VDD=5V, TA=25℃) PARAMETER SYMBOL Power Supply Current IDD Shutdown Current HP Sense high input voltage HP Sense low input voltage Wake-up time Output Offset Voltage ISD VIH VIL TWU VOS Output Power Total Harmonic Distortion+ Noise Power Supply Rejection Ratio Thermal Shutdown Temperature Shut Down Time TEST CONDITION VIN = 0V, IO = 0A, No Load VIN = 0V, IO = 0A, 8Ω Load VSHUTDOWN = 0V Bypass cap. = 1.0uF THD = 10% , f = 1 kHz RL = 8Ω, HP Sense < 0.2xVDD THD = 1% , f = 1 kHz Po RL = 8Ω, HP Sense < 0.2xVDD THD = 1% (max), f = 1kHz, RL = 32Ω, HP Sense > 0.8xVDD THD+N Po = 0.4 Wrms; f = 1kHz PSRR Vripple = 200mV sine p-p Input terminated with 10Ω to GND TSD TSDT MIN. 0.8xVDD - MAX. UNIT 9.0 mA 10.0 mA 2.0 µA V 0.2xVDD V ms 50.0 mV 1.4 W - 1.0 W - 90 mW - 0.13 62 (f = 217Hz) 66 (f = 1kHz) 170 1.0 150 8 Ω load Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 3 TYP. 3.5 4.0 0.1 176 7.0 - 190 % dB ℃ ms ® LY8895 Rev. 1.4 1.4 Watt Audio power Amplifier DC ELECTRICAL CHARACTERISTICS (VDD=3V, TA=25℃) PARAMETER SYMBOL Power Supply Current IDD Shutdown Current HP Sense high input voltage HP Sense low input voltage Output Offset Voltage Wake-up time ISD VIH VIL VOS TWU Output Power Total Harmonic Distortion+ Noise Power Supply Rejection Ratio Thermal Shutdown Temperature TEST CONDITION VIN = 0V, IO = 0A, No Load VIN = 0V, IO = 0A, 8Ω Load VSHUTDOWN = 0V MIN. 0.8xVDD - THD = 10% , f = 1 kHz RL = 8Ω, HP Sense < 0.2xVDD THD = 1% , f = 1 kHz Po RL = 8Ω, HP Sense < 0.2xVDD THD = 1% (max), f = 1kHz, RL = 32Ω, HP Sense > 0.8xVDD THD+N Po = 0.25 Wrms , f = 1kHz PSRR Vripple = 200mV sine p-p Input terminated with 10Ω to GND TSD TYP. 3.0 3.5 0.1 7.0 114 0.46 W - 0.375 W - 35 mW - 0.13 56 (f = 217Hz) 62 (f = 1kHz) 170 150 ORDERING INFORMATION LY 8 895 VV V : Package Type UL：8-Pin MSOP Product Name A : Product Line LY : Lyontek Product Number Prefix Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 4 MAX. UNIT 8.0 mA 9.0 mA 2.0 µA V 0.2xVDD V 50.0 mV ms - % dB 190 ℃ ® LY8895 Rev. 1.4 1.4 Watt Audio power Amplifier PACKAGE OUTLINE DIMENSION 8 pin 25.6 mil MSOP Package Outline Dimension Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 5