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TPS65020RHAR Datasheet(PDF) 43 Page - Texas Instruments |
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TPS65020RHAR Datasheet(HTML) 43 Page - Texas Instruments |
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43 / 53 page  I -OutputCurrent-mA O T =25 C V =1.55V A O o PWM/PFMMode V =2.5V I V =3V I V =5V I V =4.2V I V =3.8V I 0.01 0.1 1 10 100 1k TPS65020 www.ti.com SLVS607D – SEPTEMBER 2005 – REVISED JANUARY 2016 Figure 41. DCDC3 Efficiency 10 Power Supply Recommendations 10.1 Requirements for Supply Voltages Below 3.0 V For a supply voltage on pins VCC, VINDCDC1, VINDCDC2, and VINDCDC3 below 3.0 V, TI recommends enabling the DCDC1, DCDC2, and DCDC3 converters in sequence. If all 3 step-down converters are enabled at the same time while the supply voltage is close to the internal reset detection threshold, a reset may be generated during power-up. Therefore, TI recommends enabling DC-DC converters in sequence. This can be done by driving one or two of the enable pins with a RC delay or by driving the enable pin by the output voltage of one of the other step-down converters. If a voltage above 3.0 V is applied on pin VBACKUP while VCC and VINDCDCx is below 3.0 V, there is no restriction in the power-up sequencing as VBACKUP is used to power the internal circuitry. Copyright © 2005–2016, Texas Instruments Incorporated Submit Documentation Feedback 43 Product Folder Links: TPS65020 |
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