Texas Instruments TLV70028EVM-463 Evaluation Module TLV70028EVM-463 TLV70028EVM-463 Datenbogen
Produktcode
TLV70028EVM-463
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Operation
2.1.4
J4 –GND
This is the return connection for the output.
2.1.5
JP1 –ENABLE
This jumper enables or disables the regulator. Connecting the shorting jumper between pin 1 and pin 2
(ENABLE and VIN) enables the converter. Connecting the shorting jumper between pin 2 and pin 3
(ENABLE and GND) disables the converter. Never leave this pin floating.
(ENABLE and VIN) enables the converter. Connecting the shorting jumper between pin 2 and pin 3
(ENABLE and GND) disables the converter. Never leave this pin floating.
2.2
Soldering Guidelines
Any soldering work on the TLV700xxEVM must be performed using a hot air system to avoid damaging
the integrated circuit. A hot air system must be used when soldering or de-soldering any external
components such as the feedback network as well as the device. A hot air system heats all of the traces
on the board equally, which equalizes the thermal expansion of the traces on the board and thus reduces
stress. Heating only one trace, such as with a soldering iron, allows one trace to expand more than the
others and to cause shear stress on the pins of the QFN package. The shear stress on a single pin can be
enough to break the pin of the device, thus causing a device failure.
the integrated circuit. A hot air system must be used when soldering or de-soldering any external
components such as the feedback network as well as the device. A hot air system heats all of the traces
on the board equally, which equalizes the thermal expansion of the traces on the board and thus reduces
stress. Heating only one trace, such as with a soldering iron, allows one trace to expand more than the
others and to cause shear stress on the pins of the QFN package. The shear stress on a single pin can be
enough to break the pin of the device, thus causing a device failure.
3
Operation
This section provides information about the operation of the TLV700xxEVM.
3.1
Operation
Connect the positive input power supply to J1. Connect the input power return (ground) to J2. The
TLV700xxEVM has an absolute maximum input voltage of 6 V. The recommended maximum operating
voltage is 5.5 V. The actual highest input voltage may be less than 5.5 V due to thermal conditions. See
the Thermal Considerations section of this manual to determine if the highest input voltage.
TLV700xxEVM has an absolute maximum input voltage of 6 V. The recommended maximum operating
voltage is 5.5 V. The actual highest input voltage may be less than 5.5 V due to thermal conditions. See
the Thermal Considerations section of this manual to determine if the highest input voltage.
Connect the desired load between J3 (positive lead) and J4 (negative lead). Configure jumper JP1 as
required. The function of JP1 is described in the Setup section (2.1.5) of this manual.
required. The function of JP1 is described in the Setup section (2.1.5) of this manual.
3
SLUU390 – December 2009
TLV700xxEVM-463
Copyright © 2009, Texas Instruments Incorporated