Package and board-fit — 6-WSON with exposed pad
The TPS70618DRVT comes in a 6-WDFN exposed-pad package, supplier device package 6-WSON (2x2 mm). Surface-mount assembly with a 0.65 mm pitch — standard reflow profile for lead-free solder works. The small 2x2 mm footprint fits dense mixed-signal boards where a 1.8 V analog rail sits next to a 3.3 V digital core.
PSRR profile and noise-sensitive rail duty
PSRR is specified at 80 dB at 10 Hz, rolling off to 52 dB at 1 kHz. That 80 dB at low frequencies means the regulator attenuates 100 mVpp of 50/60 Hz ripple from a switching pre-regulator down to roughly 10 µVpp at the output — relevant for powering the analog supply pins of a precision ADC or a sensor front-end where the reference noise floor is in the microvolt range. The 52 dB figure at 1 kHz still provides about 400:1 rejection of switching noise from a 1 MHz buck converter's fundamental and its harmonics. For a 16-bit SAR ADC sampling at 10 kSPS, that PSRR keeps the LDO's own noise from dominating the converter's SNR budget.
Quiescent current and always-on battery life
Quiescent current is 2.55 µA typical. In a battery-powered sensor node that spends 99 % of its time in a low-power sleep state, the LDO's own draw is the dominant term in the sleep-mode power budget — 2.55 µA from a 250 mAh coin cell gives a theoretical shelf life of over 11 years before the regulator alone drains the battery. The enable pin (Control Features) lets a host MCU gate the LDO output entirely, cutting the quiescent current to near zero during deep-sleep intervals — useful when multiple voltage domains are sequenced on wake.
Protection set and input voltage envelope
Protection features include over-current, over-temperature, reverse polarity, and under-voltage lockout (UVLO). The reverse-polarity protection means the regulator survives a miswired battery connection — the internal pass FET blocks reverse current without an external Schottky diode. The UVLO threshold typically engages around 2.0 V rising, ensuring the output stays off until the input rail is stable.
Product status is Active — no end-of-life notice, no last-time-buy window. Texas Instruments lists the TPS70618DRVT as ROHS3 compliant, covering the EU RoHS exemption list through 2024.