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PM6686TR Datasheet(PDF) 25 Page - STMicroelectronics |
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PM6686TR Datasheet(HTML) 25 Page - STMicroelectronics |
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25 / 50 page  PM6686 Device description Doc ID 15281 Rev 4 25/50 Figure 45. Resistor divider to configure the output voltage Where R1, R2 are the resistors of the FB1 pin divider, as shown in Figure 2. OUT2 output voltage is programmed with REFIN2 pin. Fixed output voltage is selected connecting REFIN2 to VREF3 (OUT2 = 1.05 V) or to VCC (OUT2 = 3.3 V). When the REFIN2 voltage is between 0.7 V and 2.5 V, OUT2 output voltage tracks REFIN2 voltage. When REFIN2 is lower than 0.5 V the section is turned OFF. Table 7. Switching output voltages configuration Output control pin Control pin connected to Operation mode Output voltage OUT1 FB1 GND Fixed 5 V VCC Fixed 1.5 V Resistor divider Adj OUT2 REFIN2 VCC Fixed 3.3 V VREF3 Fixed 1.05 V Ext source Tracking =REFIN2 FB1 PHASE COUT L R1 R2 VOUT ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ + ⋅ = 1 2 R 1 R V 7 . 0 V 1 OUT |
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