[EE]:: 1 / 2 / 3 cell input boost converters with 1.8 - 5.5 Vout in the sub milliamp to 100 mA+ range. Vinmin 0.5 / 0.7 / ... V

RussellMc <[email protected]> Wed, 25 Feb 2026 13:40:27 +1300
Newsgroups gmane.comp.hardware.microcontrollers.pic
Message-ID <CACZQxzPNHCf=VX5W5C6NUg=sUe1VOSCW19QQXwuPzVFc2Z-aAg@mail.gmail.com>
Someone on SEEE asked a question about a 2 AA cell to 3V3 boost converter.
I answered based on my current experience with TLV61220.
(I'm operating at around 200 uA load, so my preferred 61220 IC may not suit
others. 61225 may be better.
(Lower Voperate, wider Vin range, 100 mA ish max load, ...)

        https://electronics.stackexchange.com/q/766149/3288

Also covers TLV61225 and TPS63001

I'm very happy with the 61220.
This may be of interest to others wanting good efficiency, low Iq boost
converters in this range

TPS61220
5 uA Iq
Vin 0.7 - 5.5V  loaded
Vout 1.8V - 5.5V
Iout 100 mA at 1.5Vin, 20 mA at 0.7 Vin

TPS61225
5 uA Iq
Vin 0.5-3.3V
Fixed 3.3V out
Less good at sub mA levels
More efficient at > 1 mA out

TPS6300x
Higher Vin_min
Worse Iq
Higher Iout
Lower efficiency
...

61220       https://www.ti.com/lit/ds/symlink/tlv61220.pdf
61225
https://www.ti.com/lit/ds/symlink/tlv61225.pdf?ts=1771845254357&ref_url=https%253A%252F%252Fwww.google.com%252F
6300x       https://www.lcsc.com/datasheet/C28060.pdf