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TS4604 Datasheet(PDF) 22 Page - STMicroelectronics |
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TS4604 Datasheet(HTML) 22 Page - STMicroelectronics |
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22 / 31 page  Application information TS4604 22/31 Doc ID 17913 Rev 1 For example, to obtain Vuvp = 3.3 V with a hysteresis of 200 mV: ● R1 = 1 k Ω ● R2 = 1.6 k Ω ● R3 = 15 k Ω Figure 49. External UVLO Figure 50. Hysteresis of the external UVLO When the external sense voltage (ESV) increases, the TS4604 stays in standby mode until the EUVP pin reaches 1.25 V (voltage across the divider R1, R2). At this point, the TS4604 starts, as does the internal 5 µA current source connected to the EUVP pin. Thanks to this 5 µA current, a voltage drop is created across the R3 resistor. 15 k R3 1.6 k R2 1 k R1 Precision band gap 1.25 V + 5 µA TS4604 - External sense voltage Vcc AM06143 Icc External sense voltage VHyst Vuvp AM06144 |
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