ZHCSFK1D July 2016 – January 2025
PRODUCTION DATA
The TLV700xx-Q1 uses a PMOS pass transistor to achieve low dropout. When (VIN – VOUT) is less than the dropout voltage (VDO), the PMOS pass device is in the linear region of operation and the input-to-output resistance is the rDS(on) of the PMOS pass element. VDO scales approximately with output current because the PMOS device behaves as a resistor in dropout.
As with any linear regulator, PSRR and transient response are degraded when (VIN – VOUT) approaches dropout. This effect is illustrated in Figure 5-13 in the Typical Characteristics section.