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TLV2217-18 Datasheet(PDF) 5 Page - Texas Instruments |
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TLV2217-18 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 13 page TLV2217 LOW DROPOUT FIXEDVOLTAGE REGULATORS SLVS067L − MARCH 1992 − REVISED APRIL 2005 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 COMPENSATION-CAPACITOR SELECTION INFORMATION The TLV2217 is a low-dropout regulator. This means that the capacitance loading is important to the performance of the regulator because it is a vital part of the control loop. The capacitor value and the equivalent series resistance (ESR) both affect the control loop and must be defined for the load range and the temperature range. Figures 1 and 2 can be used to establish the capacitance value and ESR range for the best regulator performance. TLV2217 ESR OF OUTPUT CAPACITOR vs LOAD CURRENT Figure 1 1 0.8 0.4 0.2 0 1.8 0.6 0 0.1 0.2 0.3 1.4 1.2 1.6 3 0.4 0.5 2 2.2 2.4 2.6 2.8 ∆IL ∆VL ∆VL = ESR × ∆IL Not Recommended Potential Instability CL = 22 µF CI = 0.1 µF TJ = 25°C Maximum ESR Boundary Applied Load Current Load Voltage IL − Load Current − A Minimum ESR Boundary 10 µF TLV2217 STABILITY vs ESR Figure 2 0.015 0.01 0 0 0.5 1 1.5 2 3 4 0.025 0.035 1/ESR 0.04 4.5 5 0.005 0.03 0.02 22 µF 1000 µF 2.5 3.5 100 mF 200 µF 400 µF Not Recommended Potential Instability Recommended Minimum ESR Region of Best Stability typical application schematic VO = 3.3 V 22 µF 3.8 V 0.1 µF TLV2217-33 INPUT OUTPUT Figure 3 GND |
Similar Part No. - TLV2217-18 |
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Similar Description - TLV2217-18 |
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