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TPS62746 Fiches technique(PDF) 11 Page - Texas Instruments |
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TPS62746 Fiches technique(HTML) 11 Page - Texas Instruments |
11 / 25 page VIN EN VSEL SW VOS L 2.2 2H CIN 4.7 2F VIN 2.0V to 5.5V Low Power MCU & RF TPS62746 CTRL VINSW COUT 10 2F ADC VOUT GND TPS62746 www.ti.com SLVSD27A – JUNE 2015 – REVISED AUGUST 2015 10 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 10.1 Application Information The TPS62746 is a high efficiency step down converter with ultra low quiescent current of typically 360 nA. The device operates with a tiny 2.2-µH inductor and 10-µF output capacitor over the entire recommended operation range. A dedicated measurement set-up is required for the light load efficiency measurement and device quiescent current due to the operation in the sub microampere range. In this range any leakage current in the measurement set-up will impact the measurement results. 10.2 Typical Application Figure 7. TPS62746 Typical Application Circuit 10.2.1 Design Requirements The TPS62746 is a highly integrated DC/DC converter. The output voltage is set via a VSEL pin interface. The design guideline provides a component selection to operate the device within the recommended operating conditions. Table 2 shows the list of components for the Application Characteristic Curves Table 2. Components for Application Characteristic Curves Reference Description Value Manufacturer TPS62746 360nA Iq step down converter Texas Instruments CIN Ceramic capacitor, GRM155R61C475ME15 4.7 µF Murata COUT Ceramic capacitor, GRM155R60J106ME11 10 µF Murata L Inductor DFE201610C 2.2 µH Toko Copyright © 2015, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: TPS62746 |
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