ESMT AD5165A 2.5W Mono Filter-less Class-D Audio Amplifier Features Description z z z z z z z z z The AD5165A is a mono, filter-less class-D audio amplifier. Operating with 5.0V loudspeaker driver supply, it can deliver 2.5W output power into 4 Ω loudspeaker within 10% THD+N. Supply voltage range: 2.5 V to 5.5 V Support single-ended or differential analog input Low static operation current Low shut-down current Short power-on transient time(1ms) Internal pull-low resistor on shut-down pins Short-circuit protection Over-temperature protection Loudspeaker power within 10% THD+N 1.5W/ch into 8Ω loudspeaker 2.5W/ch into 4Ω loudspeaker z Loudspeaker efficiency 90% @ 8Ω, THD+N=10% 85% @ 4Ω, THD+N=10% The AD5165A is a mono audio amplifier with high efficiency and suitable for the notebook computer, and portable multimedia devices. Ordering Information Part Number Package Comments AD5165A-HG DFN 8L Pb-free AD5165A-WG WCSP 9L Pb-free Applications z z z z z Monitor audio PDA Portable multimedia devices Notebook computer Mobile phone Functional Block Diagram Gain=300k /Rin VDD Cs ~300k + Cin Differential input Cin - Rin INP + PWMA PWM Generator Rin - Loudspeaker Driver + INN PWMB ~300k -wave Generator SD# ~300k Overload, Voltage & Thermal Protection Thermal Pad; GND Elite Semiconductor Memory Technology Inc. Publication Date : Aug. 2008 Revision: 1.2 1/15 ESMT AD5165A Pin Assignments DFN 8L, 3x3mm (Top view of PCB) WCSP 9L, 1.45x1.45mm (Top view of PCB) SD 1 8 PWMB NC 2 7 GND INP 3 6 VDD INN 4 5 PWMA 9: Thermal pad Pin Description NAME PIN TYP DESCRIPTION DFN WCSP SD 1 C2 I Shutdown AD5165A (Low active logic) INP 3 A1 I Positive differential input INN 4 C1 I Negative differential input PWMA 5 C3 O Positive output VDD 6 B1, B2 P Power supply GND 7 A2, B3 G Power ground PWMB 8 A3 O Negative output NC 2 N/A Thermal 9 pad (Note 1) N/A No internal connection G Must be connected the thermal pad of DFN package to GND. Note1: The thermal pad is at the bottom of package. To solder the thermal pad to PCB’s ground plane is must be connected. Available Package Package Type Device no. θJA (oC/W) Exposed Thermal Pad DFN 8L AD5165A-H 45.8 Yes WCSP 9L AD5165A-W 128 N/A Elite Semiconductor Memory Technology Inc. Publication Date : Aug. 2008 Revision: 1.2 2/15 ESMT AD5165A Absolute Maximum Ratings SYMBOL PARAMETER MIN MAX UNIT VDD Supply for analog cells & loudspeaker driver 2.5 5.9 V Input voltage -0.3 5.5 Tstg Ta Storage temperature Ambient operating temperature -65 V o C 150 -40 o C 85 Recommended Operating Conditions SYMBOL PARAMETER TYP UNIT VDD Supply for analog cells & loudspeaker driver 2.5 ~ 5.5 V VIH High-Level Input Voltage VDD x 40% V VIL Low-Level Input Voltage 0.8 Ta Ambient Operating Temperature V o C -40~85 General Electrical Characteristics SYMBOL PARAMETER IPD Supply current during power-down mode Voffset Output offset voltage CONDITION MIN VDD=5.0V; SD#=0 Input ac grounded, VDD=2.5V ~ 5.0V TYP MAX UNIT 0.5 1 μA 5 25 mV Junction temperature for driver shutdown 145 150 155 Temperature hysteresis for recovery from shutdown 115 120 125 fsw Switching rate of loudspeakers driver 300 450 600 kHz RSC Loudspeaker short-circuit detect resistance VDD = 5.0 V 2.2 2.8 Ω VDD=5V 400 VDD=3.6V 500 VDD=2.5V 700 VDD=5.0V, no load 4.7 VDD=3.6V, no load 3.8 VDD=2.5V, no load 3.4 rDS(on). I(Q) Static drain-source on-state resistance Quiescent current Elite Semiconductor Memory Technology Inc. o C o C mΩ mA Publication Date : Aug. 2008 Revision: 1.2 3/15