Description
The ST619LB is a step-up charge pump DC-DC converter which delivers a regulated 5 V ±4 % output at 30 mA and over temperature. The input voltage range is 2 V to 3.6 V (two battery cells).
It requires only four external capacitor: two 0.22 µF flying capacitors, and 10 µF capacitors at the input and output.

FEATUREs
■ Regulated 5 V ±4 % charge pump
■ Output current guaranteed over temperature: 20 mA (VI ≥ 2 V), 30 mA (VI ≥ 3 V)
■ No inductors; very low EMI noise
■ Uses small, inexpensive capacitors
■ Logic controlled 1 µA max shut-down supply current
■ Shut down disconnects load from input
■ Available in SO-8 and DIP-8 packages