TM 5W MONO CLASS D PLUS GENERAL DESCRIPTION FEATURES The CM8685/G is a single channel monolithic Class D Patent Filed #6,452,366 Plus TM CM8685 AUDIO AMPLIFIER Wide input range of 2.0V to 5.0V close loop and feed forward compensation techniques to 8 pin PSOP & PDIP package achieve better THD+N. The CM8685/G integrated four Integrated power MOSFETs power MOSFETs to drive bridge tight load output. They are Reduce system cost with no heat sink guaranteed no shot through, adaptively control break Close Loop and Feed Forward compensation before make. The CM8685/G can deliver peak output Efficiency of up to 90% power of up to 5 watts at 2Ω load in the high fidelity range Dramatically improves efficiency versus Class-AB (20 Hz to 20kHz). The CM8685/G incorporated a green Excellent bass frequency without big bypass DC blocking Audio Amplifier IC that using Champion’s unique mode function to ensure high efficiency at light load and full capacitor load. The CM8685/G has the optimal high efficiency of up Ultra low shut down current (1uA) to 90% and no heat sink required. The efficient Class D Ultra low operation current without load (3mA) PlusTM enables the CM8685/G to operate at full power into Internal Thermal Protection 4Ω loads at an ambient temperature of 40 ℃. Low supply current of 3mA makes the device ideal for battery-powered applications. 24 Hours Technical Support---WebSIM Champion provides customers an online circuit simulation tool CM8685/G is packaged in a 8-pin PSOP and PDIP called WebSIM. You could simply logon our website at package saves the system space. www.champion-micro.com for details. APPLICATIONS PIN CONFIGURATION PSOP-8 (PS08)/PDIP (P08) Top View Desktop & Laptop Computers PDAs Speakers (Multimedia speakers, USB speakers,..) Multi-media Monitors (CRT monitors, LCD monitors,..) Telephony Accessories (Feature phones, Web phones, & cell phones,..) MP3 Players DVD Players TVs (HDTV, LCD TV, Plasma TV,…) Portable Radio Cassettes 2006/10/11 Rev. 1.2 1 VCC VDD 8 2 VL1 VL2 7 3 AGND PGND 6 4 SD MUSIC-IN 5 Champion Microelectronic Corporation Page 1 TM 5W MONO CLASS D PLUS CM8685 AUDIO AMPLIFIER PIN DESCRIPTION Pin No. Symbol 1 Description VCC 2,7 Voltage supply for internal circuits VL1, VL2 Output / Inductor connection (IDD1, IDD2) 3 AGND Analog ground 4 SD Shutdown active HIGH. CMOS input level 5 MUSIC-IN Audio input 6 PGND Power ground for output power switcher 8 VDD Power supply for output power switcher BLOCK DIAGRAM VCC 1 8 VDD 7 VL2 100K MUSIC-IN 5 + GATE - DRIVE + SD 4 100K 6 PGND 5 VL1 AGND 3 THERMOPROTECTION GATE DRIVE ORDERING INFORMATION Part Number CM8685EP Temperature Range -40℃ to +85℃ 8-Pin PDIP (P08) CM8685ES -40℃ to +85℃ 8-Pin PSOP (PS08) CM8685GEP -40℃ to +85℃ 8-Pin PDIP (P08) CM8685GES -40℃ to +85℃ 8-Pin PSOP (PS08) 2006/10/11 Rev. 1.2 Champion Microelectronic Corporation Package Page 2 TM 5W MONO CLASS D PLUS CM8685 AUDIO AMPLIFIER ABSOLUTE MAXIMUM RATINGS Absolute Maximum ratings are those values beyond which the device could be permanently damaged. Supply Voltage -0.3 to 5.5V Input Voltage -0.3V to VCC+0.3V Power Dissipation (Note 1) Internally Limited ESD Susceptibility (Note 2) 2KV Junction Temperature (Note 3) 150 ℃ Storage Temperature -65℃≦TA≦150℃ Lead Temperature (soldering 10 sec) 260℃ RECOMMENDED OPERATING CONDITIONS MIN Operating Free-air Temperature, TA TYP MAX -40 Supply Voltage, VCC, VDD 85 3 High-level Input Voltage, VIH SD Low-level Input Voltage, VIL SD ELECTRICAL CHARACTERISTICS 4.5 UNIT ℃ 5.5 V 2 V 0.8 V (Unless otherwise stated, these specifications apply TA=25°C; Vcc=+5V and VDD=+5V) maximum ratings are stress ratings only and functional device operation is not implied. Symbol Parameter Test Conditions CM8685/G Min. Unit Typ. Max. VSD=5V 1 5 μA Without load 3 10 mA 600 690 KHz 50 mV REFERENCE SECTION ISD Supply Current, Shutdown Mode IDD Supply Current f VOS PSRR Switching Frequency 510 Output Offset Voltage Between VL1 and VL2 with 8 ohm Load Power Supply Rejection Ratio VCC=VDD=3.3V to 5.5V THD+N Total Harmonic Distortion plus Noise Po=1W, 4 ohm load, f=1kHz , Rds(ON) Drain to Source on-State Resistance D IDD=0.5A, VDD=5V Duty Cycle 55 dB <0.6 % 200 5 220 mΩ % Note 1: For operating at case temperatures above 25℃, the device must be derated based on a 150℃ maximum junction temperature and a thermal resistance of θJA=80℃/W (junction to ambient). Note 2: Human body model, 100pF discharged through a 1.5KΩ resistor. Note 3: The operating junction temperature maximum is 150℃. 2006/10/11 Rev. 1.2 Champion Microelectronic Corporation Page 3 TM 5W MONO CLASS D PLUS CM8685 AUDIO AMPLIFIER APPLICATION CIRCUIT VDD J5 D9 1 2 1 2 2 L1 100 VCC 1 C1 100uf/6.3V 1N4001 C2 10uf/6.3V PWR/IN C3 100uf/6.3V C5 C4 100uf/6.3V C6 1uf 1uf VDD 2 8 7 VDD 1 J3 C12 1uF 1 C20 1uF C9 330n D7 5817 C15 330n 1uF L9 15uH VCC 3 2 1 VCC VL2 6 C19 VCC SD SD C18 1uF 4 2 C17 1uF L5 D3 15uH 5817 1 1 VL1 2 R7 R5.6 U2 CM8685 2 1 2 R4 500k PGND R3 200k AGND 1 R2 200k 2 MUSIC_IN R1 500k 1 3 5 5 MUSIC_IN 1 4 6 PGND 7 VL2 8 VDD 2 2 2 1 L8 15uH AGND D6 5817 VL1 C14 330n 3 1uF 2 VTT U1 CM8685 1 2 1 C11 D2 5817 1 J2 L4 15uH VCC C8 330n 2 VDD 2 JP1 on/off sw 1 R5 500k 1 J4 MUSIC IN 2 R6 500k on/off sw JP2 Typical Application Circuits 2006/10/11 Rev. 1.2 Champion Microelectronic Corporation Page 4 2 1 VTT TM 5W MONO CLASS D PLUS CM8685 AUDIO AMPLIFIER PACKAGE DIMENSION 8-PIN PDIP (P08) PIN 1 ID θ θ 8-PIN PSOP (PS08) θ θ 2006/10/11 Rev. 1.2 Champion Microelectronic Corporation Page 5 TM 5W MONO CLASS D PLUS CM8685 AUDIO AMPLIFIER IMPORTANT NOTICE Champion Microelectronic Corporation (CMC) reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or environmental damage. CMC integrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. Use of CMC products in such applications is understood to be fully at the risk of the customer. In order to minimize risks associated with the customer’s applications, the customer should provide adequate design and operating safeguards. HsinChu Headquarter Sales & Marketing 5F, No. 11, Park Avenue II, Science-Based Industrial Park, HsinChu City, Taiwan 7F-6, No. 32, Sec. 1, Chenggong Rd., Nangang District, Taipei City 115 Taiwan, R.O.C. T E L : +886-3-567 9979 F A X : +886-3-567 9909 http://www.champion-micro.com T E L : +886-2-2788 0558 F A X : +886-2-2788 2985 2006/10/11 Rev. 1.2 Champion Microelectronic Corporation Page 6