TL720M05-Q1_16 Datasheet, PDF (11/25 Pages) Texas Instruments – Low-Dropout Voltage Regulator

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TL720M05-Q1
SGLS380H – SEPTEMBER 2008 – REVISED JULY 2015
9.2.2 Detailed Design Procedure
To begin the design process, determine the following:
• Input voltage range
• Output voltage
• Output current rating
• Output capacitor
9.2.2.1 Thermal Consideration
Calculate the power dissipated by the device according to the following formula:
P_T = I_O × (V_I – V_O) + V_I x I_Q
where
• PT = Total power dissipation of the device.
• I_O = output current
• V_I = input voltage
• V_O = output voltage
(1)
After determining the power dissipated by the device, calculate the junction temperature from the ambient
temperature and the device thermal impedance.
T_J = T_A + R_θJA x P_T
(2)
9.2.3 Application Curves
Figure 15. CH1: Vin, CH2: Vout Power Up Waveform (Load
= 50 mA)
Figure 16. CH1: Vin, CH2: Vout Power Down Waveform
(Load = 50mA)
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