ST619LB series

This is the DESCRIPTION of ST619LB series: The ST619LB is a step-up charge pump DC-DC converter which delivers a regulated 5V ±4% output at 30mA and over temperature. The input voltage range is 2V to 3.6V (two battery cells). It requires only four external capacitor: two 0.22F flying capacitors, and 10F capacitors at the input and output. Low operating supply current (typ 200A) make the device ideal for small, portable and battery powered applications. When shut down the load is disconnected from the input and the supply current is typically 0.02A. The ST619LB is available in SO-8 and DIP-8 packages.

And these are the features: The first one is regulated 5v ±4% charge pump. The second one is output current guaranteed over temperature of 20ma (vi.2v ),30ma (vi.3v ). The third one is no inductors; very low emi noise. The forth one is uses small, inexpensive capacitors. The fifth one is logic controlled 1a max shut-down supply current. The sixth one is shut down disconnects load from input. The seventh one is available in so-8 and dip-8 packages.

And these are the maximum ratings: Firstly, dc input voltage is from -0.3 to 5.5 v. Secondly, output voltage is from -0.3 to 5.5 v. Thirdly, shutdown input voltage is from -0.3 to (vi + 0.3) v. Fourthly, output current continuous is 120 ma. Fifthly, storage temperature range is from -55 to +150 °c. Sixthly, operating junction temperature range is from -40 to +85 °c.

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