JAJSSK4A December 2023 – June 2024 TPSM64404 , TPSM64406 , TPSM64406E
PRODUCTION DATA
The frequency is set using a resistor on the RT pin. A resistor to AGND is used to set the adjustable operating frequency. See below for resistor values. A resistor value that falls outside of the recommended range can cause the device to stop switching. Do not apply a pulsed signal to this pin to force synchronization. If synchronization is needed, see the SYNC pin.
For example, for fSW = 400 kHz, RT = (16.4 / 0.4) - 0.633 = 40.37, so a 40.2-kΩ resistor is selected as the closest choice.
RT (kΩ) | Frequency (kHz) |
---|---|
6.81 | 2206 |
7.15 | 2106 |
15.4 | 1005 |
31.6 | 497.4 |
39.2 | 402 |
158 | 101 |