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LED7706TR Datasheet(PDF) 13 Page - STMicroelectronics |
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LED7706TR Datasheet(HTML) 13 Page - STMicroelectronics |
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13 / 31 page  LED7706 Operation description - boost section 13/31 6.2 Enable function The LED7706 is enabled by the EN pin. This pin is active high and, when forced to SGND, the device is turned off. This pin is connected to a permanently active 2.5 µA current source; when sudden device turn-on at power-up is required, this pin must be left floating or connected to a delay capacitor. When turned off, the LED7706 quickly discharges the soft-start capacitor and turns off the Power MOSFET, the current generators and the LDO. The power consumption is thus reduced to 20 µA only. In applications where the dimming signal is used to turn on and off the device, the EN pin can be connected to the DIM pin as shown in Figure 5. Figure 5. External sync waveforms DIM EN SGND LED7706 220k 100n BAS69 |
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