TLVM13630 datasheet(25/44 Pages) TI

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For the desired output voltage of 5 V, the formula yields a value of 40.2 kΩ. Choose the closest available

standard value of 40.2 kΩ for RFBT.

8.2.1.2.3 Switching Frequency Selection

The recommended switching frequency for standard output voltages can be found in Table 7-1. For a 5-V output,

the recommended switching frequency is 1 MHz. To set the switching frequency to 1 MHz, connect a 13.0-kΩ

resistor between the RT pin and AGND.

8.2.1.2.4 Input Capacitor Selection

The TLVM13630 requires a minimum input capacitance of 2 × 4.7-µF ceramic type. High-quality ceramic type

capacitors with sufficient voltage and temperature rating are required. The voltage rating of input capacitors must

be greater than the maximum input voltage.

For this design, select two 4.7-µF, 50-V, 1210 case size, ceramic capacitors.

8.2.1.2.5 Output Capacitor Selection

For a 5-V output, the TLVM13630 requires a minimum of 25 µF of effective output capacitance for proper

operation (see Table 7-1). High-quality ceramic type capacitors with sufficient voltage and temperature rating are

required. Additional output capacitance can be added to reduce ripple voltage or for applications with transient

load requirements.

For this design example, select two 47-µF, 10-V, 1210 case size, ceramic capacitors, which have a total effective

capacitance of approximately 48 µF at 5 V.

8.2.1.2.6 Other Connections

• Connect VLDOIN to VOUT to improve efficiency.

• Place a 1-µF capacitor between the VCC pin and PGND, located near to the device.

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TLVM13630

SLVSFT6B – MAY 2021 – REVISED JANUARY 2022

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TLVM13630 Datasheet(PDF) 25 Page - Texas Instruments