Datasheet

PSRR - Power Supply Rejection Ratio - dB

1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06 1.0E+07

f - Frequency - Hz

I = 10 mA

V = 4 V,

V = 3.3 V

I = 100 mA

I = 780 mA

I = 1000 mA

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TPS7A8101 Device Operation

2.1.7 J7 and J8 – GND

This is the return connection to the input power supply. Connect the power supply between J7 or J8 and

J3 (VIN). Twist the leads to the input supply, and keep them as short as possible. The input voltage must

be between 2.2 V and 6.5 V.

3 TPS7A8101 Device Operation

This section provides information about the operation of the TPS7A8101EVM.

3.1 Test Procedure

Ensure that the input power supply is off. Connect the positive input power supply to J3. Connect the input

power return (ground) to J7. The TPS7A8101 has an absolute maximum input voltage of 7 V. The

recommended maximum operating voltage is 6.5 V. The actual highest input voltage may be less than 6.5

V due to thermal conditions. See the Thermal Considerations Section 4 of this manual to determine the

highest input voltage.

Connect the desired load between J4 (positive lead) and J8 (negative or return lead). Configure jumper J6

for the desired output voltage. Turn on the input power supply.

3.2 Test Data

Figure 1 through Figure 5 present typical performance curves for the TPS62060EVM. Actual performance

data can be affected by measurement techniques and environmental variables; therefore, these curves

are presented for reference and may differ from actual results obtained by some users.

3.2.1 PSRR

Figure 1 and Figure 2 show the typical PSRR performance for the TPS7A8101EVM.

Figure 1. TPS7A8101 PSRR for Variable Output Currents, VDO=0.7 V

SLVU600– December 2011 TPS7A8101EVM Evaluation Module

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