TI claims lowest ever Iq for LDO
Coming soon !!
Texas Instruments has announced a low-dropout (LDO) linear voltage regulator, with what it claims is “industry’s lowest quiescent current of sub-25nA. The regulator features low Iq control at light loads even in dropout conditions”.
Called TPS7A02, it can accept inputs across 1.5 – 6.0V and is available with fixed outputs between 0.8 and 5.0V (50mV steps) – at up to 200mA. Quiescent current remains below 50nA below 85°C, but can climb to over 170nA at 125°C.
Settling time following a 1mA to 50mA load change is <10µs with 100mV undershoot. “With the ability to quickly respond to rapidly changing loads while providing minimal variation in output voltage, the TPS7A02 can benefit high-precision, low-power applications such as wireless IoT and portable medical devices,” according to TI.
There is an enable pin, which can be used to shut the device down to a 3nA sleep. Inside, this pin is connected to a controlled pull-down resistor that keeps the LDO disabled even when the EN pin is left floating.
Packaging is 1.0 x 1.0mm X2SON, with SOT23-5 (2.9 x 1.6mm) and 0.65 x 0.65mm DSBGA (die-size ball grid array) types planned.