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TDA7262 데이터시트(PDF) 4 Page - STMicroelectronics |
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TDA7262 데이터시트(HTML) 4 Page - STMicroelectronics |
4 / 8 page APPLICATION SUGGESTION The recommended values of the components are those shown on application circuit of Figure 1. Differ- ent values can be used; the following table can help the designer. Component Recomm. Value Purpose Larger than Smaller than R1 and R3 1.3K Ω Close loop gain setting (*) Increase of gain Decrease of gain R2 and R4 18 Ω Decrease of gain Increase of gain R5 and R6 1 Ω Frequency stability Danger of oscillations C1 and C2 2.2 µF Input DC decoupling higher turn-on delay - worse turn-ON pop - higer low freq. cutoff. Increase of noise C3 22 µF (**) - Ripple rejection - Stand-by time constant Increase of the Switch-on time - Degradation of SVR - worse turn-OFF pop by stand-by C4 100nF Supply setting Danger of oscillations C5 1000 µF Supply setting worse turn-OFF pop C6 and C7 220 µF Feedback input DC decoupling C8 and C9 0.1 µF Frequency stability Danger of oscillations C10 and C11 1000 µFto 2200 µF Output DC decoupling Higher low-frequency cut-off (*) Closed loop gain must be higher than 26dB. (**) 220 µF in case of stand-by utilization. Figure 2: Ouput Power vs. Supply Voltage Figure 3: Ouput Power vs. Supply Voltage TDA7262 4/8 |
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