Hi Experts,
My customer is considering to use TPS7A20 to generate 3.3Vout(fixed) from battery. Battery supply voltage is 3.6V and decresing gradually. When the battery voltage is lower than VOUT + VDO(Dropout voltage), Vout starts to be lower than 3.3V. For example, when a battery voltage is 3.0V, Vout would be 3.0 - VDO(140mV max). If Vout is used for MSP430 whose min voltage is 1.8V, MSP430 continues to work.
Usually, LDO is used VIN + VDO > VOUT. Can customer use LDO with this low Vin condition?
Regards,
Uchikoshi