ZHCSN51K June 2007 – June 2024 TPS74901
PRODUCTION DATA
First choose the bias, which must be at least 1.75V above the output voltage. A 3.3V rail is used to achieve this minimum voltage. For a minimal external component count and size, select the minimum capacitor sizes. CIN = 1µF, CBIAS = 1µF, and a COUT = 10µF. The COUT value was chosen to improve transient response. Using Table 7-2, R1 is set to 2.49kΩ and R2 is set to 4.99kΩ to create a 1.2V rail. The pullup resistor for PG is set to 10kΩ.