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TPA005D12DCA Arkusz danych(PDF) 4 Page - Texas Instruments |
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TPA005D12DCA Arkusz danych(HTML) 4 Page - Texas Instruments |
4 / 8 page TPA005D12 2-W STEREO CLASS-D AUDIO POWER AMPLIFIER SLOS241B – AUGUST 1999 – REVISED MARCH 2000 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Class-D amplifier faults Table 1. Class-D Amplifier Fault Table FAULT 0† FAULT 1† DESCRIPTION 1 1 No fault. — The device is operating normally. 0 1 Charge pump under-voltage lock-out (VCP-UV) fault. — All low-side transistors are turned on, shorting the load to ground. Once the charge pump voltage is restored, normal operation resumes, but FAULT1 is still active. FAULT1 is cleared by cycling MUTE, SHUTDOWN, or the power supply. 1 0 Over-current fault. — The output transistors are all switched off. This causes the load to be in a high-impedance state. This is a latched fault and is cleared by cycling MUTE, SHUTDOWN, or the power supply. 0 0 Thermal fault. — All the low-side transistors are turned on, shorting the load to ground. This is latched fault and is cleared by cycling MUTE, SHUTDOWN, or the power supply. † These logic levels assume a pullup to PVDD from the open-drain outputs. absolute maximum ratings over operating free-air temperature range, TC = 25°C (unless otherwise noted)‡ Supply voltage, VDD (PVDD, LPVDD, RPVDD, VDD) 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage, VI (SHUTDOWN, MUTE) – 0.3 V to 5.8 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output current, IO (FAULT0, FAULT1), open drain terminated 1 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Charge pump voltage, VCP PVDD + 15 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous H-bridge output current 2 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pulsed H-Bridge output current, each output, Imax (see Note 1) 5 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous total power dissipation See Dissipation Ratings Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating virtual junction temperature range, TJ –40 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating case temperature range, TC –40 °C to 125°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg –40 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: Pulse duration = 10 ms, duty cycle v 2% DISSIPATION RATING TABLE PACKAGE TA ≤ 25°C† POWER RATING DERATING FACTOR ABOVE TA = 25°C TA = 70°C POWER RATING TA = 85°C POWER RATING TA = 125°C POWER RATING DCA 5.6 W 44.8 mW/ °C 3.6 W 2.9 W 1.1 mW † Please see the Texas Instruments document, PowerPAD Thermally Enhanced Package Application Report (literature number SLMA002), for more information on the PowerPAD package. The thermal data was measured on a PCB layout based on the information in the section entitled Texas Instruments Recommended Board for PowerPAD on page 33 of the before mentioned document. recommended operating conditions MIN NOM MAX UNIT Supply voltage, PVDD, LPVDD, RPVDD, VDD 4.5 5.5 V High-level input voltage, VIH 4.25 V Low-level input voltage, VIL 0.75 V Audio inputs, LINN, LINP, RINN, RINP, differential input voltage 1 VRMS PWM frequency 150 450 kHZ |
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