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TPS62746 Fiches technique(PDF) 11 Page - Texas Instruments

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No de pièce TPS62746
Description  TPS62746 300 mA High Efficiency Buck Converter with Ultra-low Quiescent Current and VIN Switch
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS62746 Fiches technique(HTML) 11 Page - Texas Instruments

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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
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