® LY8893 Rev. 1.4 1.4 Watt Audio power Amplifier with Active-high shutdown mode 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. Shutdown pin high active. Lead free and green package available. (RoHS Compliant) Space Saving Package -- 8-pin MSOP package. The LY8893 is a 1.4 Watt audio power amplifier. And the LY8893 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 LY8893 amplifier to switch BTL mode and headphone mode (single-ended) is accomplished using the headphone sense pin. And the LY8893 audio amplifier features low power consumption shutdown mode. It is achieved by driving the shutdown pin with logic high. Besides the LY8893 has an internal thermal shutdown protection feature. The LY8893 amplifier was designed specifically to provide high quality output power with a minimal amount of external components. The LY8893 does not require output capacitors, and the LY8893 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 ® LY8893 Rev. 1.4 1.4 Watt Audio power Amplifier with Active-high shutdown mode PIN DESCRIPTION SYMBOL PIN No. DESCRIPTION MSOP SHUTDOWN 1 Shutdown the device.(when HIGH level is active the pin) BYPASS 2 Bypass pin SE/BTL 3 SE and BTL select pin.(when HIGH level is SE mode, when LOW level is BTL mode.) -IN 4 Audio 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 ® LY8893 Rev. 1.4 1.4 Watt Audio power Amplifier with Active-high shutdown mode 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 Output Power Total Harmonic Distortion+ Noise Power Supply Rejection Ratio Thermal Shutdown Temperature Shut Down Time TWU VOS 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 - 1.0 - 90 - 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 W - W mW - 190 % dB ℃ ms ® LY8893 Rev. 1.4 1.4 Watt Audio power Amplifier with Active-high shutdown mode DC ELECTRICAL CHARACTERISTICS (VDD=3V, TA=25℃) PARAMETER Power Supply Current Shutdown Current HP Sense high input voltage HP Sense low input voltage Output Offset Voltage Wake-up time Output Power Total Harmonic Distortion+ Noise Power Supply Rejection Ratio Thermal Shutdown Temperature SYMBOL IDD ISD VIH VIL VOS TWU 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 8 893 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 ℃ ® LY8893 Rev. 1.4 1.4 Watt Audio power Amplifier with Active-high shutdown mode 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